BGE Baltimore Gas and Electric Pre-Employment Test (EEI CAST) — Questions and Answers

Question 1: What does 'NTS' mean when noted next to a dimension on a utility drawing?

Network Tie-in Schematic
Normal Temperature Standard
Not To Scale (Correct answer)
No Tee Section

Correct answer: Not To Scale

NTS means the drawing is Not To Scale, warning the reader that dimensions shown cannot be measured directly from the drawing and written dimensions must be used.

Question 2: Which BGE rate schedule typically applies to large commercial and industrial customers served at high voltage?

GH (General High Voltage) (Correct answer)
RL (Residential Limited)
GL (General Low Voltage)
R (Residential)

Correct answer: GH (General High Voltage)

The GH (General High Voltage) rate schedule applies to large commercial and industrial customers served at transmission or primary distribution voltage levels.

Question 3: Which material is most commonly used for new natural gas distribution pipelines installed in residential areas?

Polyethylene (PE) (Correct answer)
Cast iron
Copper
Galvanized steel

Correct answer: Polyethylene (PE)

Polyethylene pipe is the industry standard for new residential gas distribution due to its corrosion resistance, flexibility, and ease of fusion joining.

Question 4: When BGE performs switching operations to de-energize a feeder for maintenance, the NESC requires the crew to follow which safety principle to verify the line is de-energized?

Assume de-energized if no visible arc occurs
Rely on dispatcher confirmation over radio
Test-Before-Touch using an approved voltage detector (Correct answer)
Visual inspection of open switch positions only

Correct answer: Test-Before-Touch using an approved voltage detector

The NESC and OSHA 1910.269 require workers to test conductors with an approved voltage detector (Test-Before-Touch) before treating them as de-energized.

Question 5: Which safety practice is essential for preventing cross-contamination in Baltimore Gas and Electric?

Using the same tools everywhere
Working faster
Proper hand hygiene and equipment sanitation (Correct answer)
Skipping cleaning protocols

Correct answer: Proper hand hygiene and equipment sanitation

Proper hygiene and sanitation prevent the transfer of harmful agents between surfaces, materials, or patients.

Question 6: Which standard defines voltage tolerances on the BGE distribution system, specifying acceptable voltage ranges at the point of customer delivery?

IEC 61000
NESC Rule 230
ANSI C84.1 (Correct answer)
IEEE Std 1159

Correct answer: ANSI C84.1

ANSI C84.1 establishes the voltage ranges (Range A and Range B) for electric power systems at the point of delivery to the customer.

Question 7: Which skill is most important for success in Blueprint Reading & Interpretation within Baltimore Gas and Electric?

Continuous learning and adaptation (Correct answer)
Working without any training
Avoiding feedback
Resisting change

Correct answer: Continuous learning and adaptation

Continuous learning ensures professionals stay current with evolving practices in Blueprint Reading & Interpretation.

Question 8: What is the minimum number of personnel required to perform a live-line bare-hand transmission line maintenance task?

2 qualified linemen
3 qualified linemen with a foreman (Correct answer)
1 qualified lineman
4 qualified linemen and a safety officer

Correct answer: 3 qualified linemen with a foreman

Bare-hand live-line work requires at least 3 qualified workers — 2 on the line and a ground-level observer/foreman.

Question 9: Which federal regulation requires BGE to provide advance notice before disconnecting service to a customer with a documented medical condition?

OSHA 29 CFR 1910.147
DOT Pipeline Safety Regulations Part 192
Clean Air Act Section 112
Maryland Public Service Commission Order 88-853 (Correct answer)

Correct answer: Maryland Public Service Commission Order 88-853

Maryland PSC Order 88-853 mandates extended notice and protections for customers with life-threatening medical conditions before disconnection.

Question 10: A BGE gas map shows a valve marked 'NO.' In normal system operations, what does this mean?

The valve is Normally Open (Correct answer)
The valve has no operational status assigned
The valve was installed with no flow restriction
The valve is Not Operable and requires maintenance

Correct answer: The valve is Normally Open

On utility system maps, 'NO' designates a Normally Open valve, meaning it is open during standard operating conditions and would be closed only during emergencies or maintenance.

Question 11: In Maryland, which agency has primary authority to adopt and enforce the National Electrical Code for commercial and residential construction?

Maryland Public Service Commission
Maryland Department of Labor (Correct answer)
BGE's compliance division
Baltimore City Fire Marshal

Correct answer: Maryland Department of Labor

The Maryland Department of Labor oversees adoption and enforcement of the NEC for construction work throughout the state.

Question 12: What information must be verified before a BGE worker accepts an equipment clearance from the control center?

Only the equipment number
Equipment number, its de-energized status, and the isolation points (Correct answer)
The supervisor's name and badge number
Time of clearance and crew size only

Correct answer: Equipment number, its de-energized status, and the isolation points

Workers must verify equipment identity, confirmation of de-energization, and all isolation/grounding points before accepting a clearance.

Question 13: What energy storage technology is most commonly paired with residential solar installations in Maryland?

Compressed air energy storage
Flywheel energy storage
Lithium-ion battery systems (Correct answer)
Pumped hydro storage

Correct answer: Lithium-ion battery systems

Lithium-ion battery systems (such as Tesla Powerwall) are the dominant residential storage technology paired with home solar installations.

Question 14: What does the term 'two-man rule' mean in BGE safety procedures?

A second worker must be present when performing high-hazard tasks (Correct answer)
Two approvals needed for work orders
Two supervisors must sign off on safety plans
Two safety checks must be performed daily

Correct answer: A second worker must be present when performing high-hazard tasks

The two-man rule requires a second trained worker present during high-hazard tasks to provide assistance or call for help.

Question 15: What is the importance of staying current with trends in Blueprint Reading & Interpretation for Baltimore Gas and Electric?

It is only required for new professionals
It is not necessary once certified
It ensures practices remain effective and relevant (Correct answer)
Trends do not affect professional practice

Correct answer: It ensures practices remain effective and relevant

Staying current with industry trends ensures that professional practices remain effective, relevant, and aligned with evolving standards.

Question 16: A gas main blueprint shows a 'C.I.' designation for an existing pipe segment. What material does this indicate?

Copper Inlay
Corrugated Interlock pipe
Coated Iron
Cast Iron (Correct answer)

Correct answer: Cast Iron

C.I. stands for Cast Iron, an older pipe material found in legacy gas distribution systems that requires special handling procedures during maintenance.

Question 17: BGE's parent company Exelon has committed to achieving net-zero emissions by which year?

2050 (Correct answer)
2030
2045
2035

Correct answer: 2050

Exelon has committed to achieving net-zero greenhouse gas emissions by 2050.

Question 18: Which phenomenon, caused by inductive and capacitive loads, reduces the efficiency of BGE's distribution system if left uncorrected?

Harmonic resonance
Skin effect
Thermal runaway
Poor power factor (Correct answer)

Correct answer: Poor power factor

Poor power factor means more current must flow to deliver the same real power, increasing line losses and reducing system efficiency.

Question 19: What type of joining method is required when connecting polyethylene (PE) gas pipe in the field for a permanent, pressure-rated joint?

Push-to-connect fittings
Solvent cementing
Mechanical compression couplings
Electrofusion or butt fusion (Correct answer)

Correct answer: Electrofusion or butt fusion

Electrofusion and butt fusion are the only methods approved for permanent pressure-rated PE gas pipe joints because they create a homogeneous plastic bond as strong as the pipe itself.

Question 20: A quality inspector observes that a contractor backfilled a gas main trench before the required inspection. Under BGE QC standards, what must happen?

Issue a warning and allow the work to remain
Conduct a hydrostatic test as a substitute inspection
Accept the work if no leaks are found later
Require the contractor to excavate and expose the work for inspection (Correct answer)

Correct answer: Require the contractor to excavate and expose the work for inspection

Work that bypasses a mandatory inspection point must be re-exposed so the required inspection can be performed before final acceptance.

Question 21: What is the standard BGE protocol when a field crew arrives at a reported gas leak?

Knock on doors to ask residents whether they smell gas before investigating further
Wait for police to arrive and clear the scene before taking any action
Approach cautiously, eliminate ignition sources, evacuate the immediate area, and summon BGE gas emergency response (Correct answer)
Immediately close the nearest main valve and begin repairs

Correct answer: Approach cautiously, eliminate ignition sources, evacuate the immediate area, and summon BGE gas emergency response

Gas leak protocol requires eliminating ignition sources, evacuating nearby buildings, and dispatching the specialized gas emergency team before any repair attempt.

Question 22: During a transformer change-out, a lineman needs to cut a heavily loaded primary conductor. Which tool is used to make this cut safely while maintaining circuit continuity?

Hydraulic cable cutter without jumper
Wire stripper rated for the conductor size
Insulated bolt cutter at arm's length
Live-line cutter with bypass jumper in place (Correct answer)

Correct answer: Live-line cutter with bypass jumper in place

A bypass jumper is installed before cutting to maintain circuit continuity and prevent an outage; the cut is then made with a live-line cutter from the appropriate safe distance.

Question 23: In a utility substation, what material property is most important when selecting bus bar for high-current applications at 60 Hz?

Optical reflectivity
Coefficient of static friction
High electrical conductivity combined with adequate tensile strength (Correct answer)
Magnetic permeability

Correct answer: High electrical conductivity combined with adequate tensile strength

Bus bars must carry thousands of amperes continuously, so high conductivity (to minimize resistive losses and heating) and sufficient mechanical strength (to withstand fault current forces) are paramount.

Question 24: When a BGE blueprint profile view shows a vertical exaggeration notation of '10x,' what does this mean for interpretation?

Vertical dimensions are scaled ten times larger than horizontal dimensions (Correct answer)
The pipe diameter is shown ten times its actual size
Ten times more detail is shown than in the plan view
The drawing is ten times larger than actual size

Correct answer: Vertical dimensions are scaled ten times larger than horizontal dimensions

Vertical exaggeration means the vertical scale is multiplied (here by 10) relative to the horizontal scale, making elevation changes more visible on otherwise flat utility profiles.

Question 25: When a BGE gas crew is purging a gas main, what is the key safety precaution to prevent ignition?

Ensure all ignition sources are eliminated from the purge area (Correct answer)
Purge only during daytime hours
Use copper purge connections only
Notify customers 24 hours in advance

Correct answer: Ensure all ignition sources are eliminated from the purge area

All ignition sources — flames, electrical equipment, vehicles — must be removed from the purge area to prevent combustion.

Question 26: A distribution feeder experiences repeated voltage sag complaints from customers. Which device is BEST suited to correct this issue?

Recloser
Voltage regulator (Correct answer)
Step-down transformer
Lightning arrester

Correct answer: Voltage regulator

Voltage regulators automatically adjust voltage levels along a feeder to compensate for load-induced sags and keep voltage within acceptable limits.

Question 27: Under BGE policy, who owns and is responsible for the meter socket enclosure at a customer's premises?

Meter sockets are owned by the local municipality
The customer owns the meter socket; BGE owns only the meter itself (Correct answer)
BGE provides and owns all meter socket equipment
Ownership is shared 50/50 between BGE and the customer

Correct answer: The customer owns the meter socket; BGE owns only the meter itself

The meter socket enclosure is customer-owned equipment; BGE's responsibility ends at the meter itself and the service conductors up to the point of delivery.

Question 28: What does 'estimated restoration time' (ERT) represent in a BGE outage event?

BGE's best projection of when power will be restored based on damage assessment and crew availability (Correct answer)
A contractual guarantee of when service will be restored
The number of hours remaining in the field crew's work shift
The time a customer originally called to report the outage

Correct answer: BGE's best projection of when power will be restored based on damage assessment and crew availability

ERT is BGE's projected restoration time based on damage scope, crew availability, and repair complexity — it is an estimate that may be updated as more information becomes available.

Question 29: In BGE's territory, which entity sets the retail electricity distribution rates that BGE charges customers?

PJM Interconnection
BGE's parent company Exelon
The Maryland Public Service Commission (PSC) (Correct answer)
The U.S. Department of Energy

Correct answer: The Maryland Public Service Commission (PSC)

The Maryland Public Service Commission regulates BGE's distribution rates through formal rate case proceedings.

Question 30: What does PPE stand for in the context of Baltimore Gas and Electric safety protocols?

Personal Protective Equipment (Correct answer)
Project Planning Essentials
Professional Performance Evaluation
Public Policy Enforcement

Correct answer: Personal Protective Equipment

PPE stands for Personal Protective Equipment, which includes items worn to minimize exposure to hazards that cause injuries.

Question 31: What hazard does accidental 're-energization' present to BGE workers during outage restoration?

Unexpected energization of lines workers believe are de-energized, creating an electrocution hazard (Correct answer)
Interference with smart meter AMI communications
Reduced electricity bills for nearby customers
Overloading the billing and OMS systems

Correct answer: Unexpected energization of lines workers believe are de-energized, creating an electrocution hazard

Accidental re-energization of a line that workers believe is de-energized is a leading cause of utility worker fatalities, which is why lockout/tagout and personal protective grounds are mandatory.

Question 32: When installing a pad-mounted transformer, which code primarily governs the required clearances from buildings and combustible materials?

NESC Rule 214 (Correct answer)
NFPA 13
IEEE Std 516
NFPA 70B

Correct answer: NESC Rule 214

NESC Rule 214 specifies the required clearances between electrical equipment such as pad-mounted transformers and buildings or combustible structures.

Question 33: Which IEEE standard governs the testing and performance requirements for rubber insulating gloves used by BGE linemen performing live-line work?

NFPA 70E Table 130.7
ASTM D120 (Correct answer)
IEEE Std 516
IEEE Std 1048

Correct answer: ASTM D120

ASTM D120 (Standard Specification for Rubber Insulating Gloves) defines the classes, performance requirements, and test methods for rubber insulating gloves.

Question 34: Which tool is used to measure the depth of burial of a previously installed PE gas main without excavation?

Pressure differential probe
Soil resistance meter
Ground penetrating radar (GPR) or pipe locator depth-reading mode (Correct answer)
Electromagnetic pipe thickness gauge

Correct answer: Ground penetrating radar (GPR) or pipe locator depth-reading mode

Ground penetrating radar or a pipe locator operating in depth-read mode can estimate burial depth non-invasively, though direct excavation remains the most accurate method.

Question 35: An insulation resistance (megohmmeter) test is performed on a 600V distribution cable. A reading of 50 MΩ is obtained. This result indicates:

The cable is energized and the test is invalid
Zero leakage current, confirming a perfect insulation system
An acceptable insulation resistance for a 600V cable in good condition (Correct answer)
The cable insulation is compromised and must be replaced immediately

Correct answer: An acceptable insulation resistance for a 600V cable in good condition

A megohmmeter reading of 50 MΩ for a 600V cable generally indicates acceptable insulation integrity; values typically fall from hundreds of MΩ when new and are concerning only when dropping to single-digit MΩ or below.

Question 36: According to NFPA 70E, an arc flash hazard analysis must be updated or reviewed at a minimum every:

3 years
10 years
1 year
5 years (Correct answer)

Correct answer: 5 years

NFPA 70E requires arc flash hazard analysis to be reviewed and updated at intervals not to exceed 5 years, or when major modifications occur.

Question 37: What role do transformers play in electricity distribution?

Generate electricity
Regulate electricity usage
Convert AC to DC
Increase or decrease voltage levels (Correct answer)

Correct answer: Increase or decrease voltage levels

Transformers are essential components in electricity distribution systems, primarily responsible for changing voltage levels. Step-up transformers increase voltage for efficient long-distance transmission, while step-down transformers decrease voltage for safe distribution to homes and businesses. This ability to adjust voltage is critical for the effective and safe delivery of electricity across the grid.

Question 38: What is the purpose of a hot stick (live-line tool) minimum length rating?

To maintain safe electrical insulation distance between the worker and energized conductors (Correct answer)
To ensure the tool reaches the work point from ground level
To support the weight of heavy conductors
To comply with DOT height regulations for vehicle transport

Correct answer: To maintain safe electrical insulation distance between the worker and energized conductors

The rated length of a hot stick provides the required insulation and approach distance clearance for the voltage being worked.

Question 39: A blueprint indicates a gas main with the notation 'XCOAT.' What does this describe?

The pipe requires extra coating before backfill
The pipe is coated with an external corrosion-resistant material (Correct answer)
The pipe coating was inspected and approved
The pipe has crossed an existing coated main

Correct answer: The pipe is coated with an external corrosion-resistant material

XCOAT indicates the pipe has an external protective coating applied to resist corrosion, commonly used on steel mains in corrosive soil conditions.

Question 40: What is a fundamental principle of Material Selection & Properties in Baltimore Gas and Electric practice?

Working in isolation without guidance
Ignoring industry guidelines
Using outdated methods
Following established standards and best practices (Correct answer)

Correct answer: Following established standards and best practices

Following established standards and best practices ensures quality and consistency in Material Selection & Properties.

Question 41: When conducting an above-ground survey (AGS) of a gas distribution system, what parameter is primarily being measured?

Pipe-to-soil potential to assess cathodic protection effectiveness (Correct answer)
Operating pressure at each valve
Pipe wall thickness using ultrasound
Gas flow rate at each service

Correct answer: Pipe-to-soil potential to assess cathodic protection effectiveness

Above-ground surveys measure pipe-to-soil potential (voltage) to evaluate whether cathodic protection is providing adequate corrosion protection.

Question 42: How does collaboration enhance Installation Techniques in Baltimore Gas and Electric?

It reduces individual accountability
It creates unnecessary meetings
It slows down the process
It brings diverse perspectives and improves outcomes (Correct answer)

Correct answer: It brings diverse perspectives and improves outcomes

Collaboration brings together different viewpoints and expertise, leading to better decision-making and outcomes.

Question 43: In electricity distribution, what does the term 'radial feeder' describe?

A feeder powered by renewable energy only
A feeder dedicated exclusively to industrial customers
A feeder that supplies power in one direction from a single source (Correct answer)
A feeder that loops back to its source creating redundancy

Correct answer: A feeder that supplies power in one direction from a single source

A radial feeder distributes power in a single path from substation to customers without a return loop.

Question 44: Under NERC CIP standards applicable to BGE's transmission operations, which CIP standard addresses physical security of critical cyber assets located at substations?

CIP-010
CIP-006 (Correct answer)
CIP-013
CIP-002

Correct answer: CIP-006

NERC CIP-006 (Physical Security of BES Cyber Systems) requires utilities to implement physical security controls at facilities housing critical cyber assets.

Question 45: What environmental benefit does BGE's accelerated gas main replacement program provide beyond safety?

It enables the grid to carry hydrogen fuel instead
It lowers customer bills by reducing gas losses
It reduces methane leaks from aging cast-iron and bare-steel pipes (Correct answer)
It allows higher pressure natural gas distribution

Correct answer: It reduces methane leaks from aging cast-iron and bare-steel pipes

Replacing aging cast-iron and bare-steel gas mains reduces fugitive methane emissions, which are a potent greenhouse gas, benefiting both safety and the environment.

Question 46: What is the standard billing cycle length for most BGE residential customers?

30 days (Correct answer)
7 days
60 days
14 days

Correct answer: 30 days

BGE residential customers are typically billed on a monthly (approximately 30-day) billing cycle.

Question 47: After restoring power following an outage, how does BGE confirm restoration without dispatching a crew to every individual address?

Through smart meter 'power restored' pings transmitted automatically over the AMI network (Correct answer)
By conducting customer callback surveys
By having a supervisor perform a visual drive-by inspection
By sending automated robocalls to customer landlines

Correct answer: Through smart meter 'power restored' pings transmitted automatically over the AMI network

BGE's AMI smart meters send automatic power-on signals over the RF mesh network, allowing the Outage Management System to confirm restoration remotely and at scale.

Question 48: What does the abbreviation 'ROW' stand for on a BGE pipeline blueprint?

Recorded Operating Wattage
Riser on Wall
Right-of-Way (Correct answer)
Regulator Output Width

Correct answer: Right-of-Way

ROW stands for Right-of-Way, designating the corridor of land where BGE has legal authority to install and maintain utility infrastructure.

Question 49: A blueprint shows a gas main crossing a waterway with a notation 'H.D.D.' What does this indicate?

Heavy Duty Diameter
High Ductility Design
Hydraulic Depth Detection
Horizontal Directional Drill (Correct answer)

Correct answer: Horizontal Directional Drill

H.D.D. stands for Horizontal Directional Drill, a trenchless installation method used to bore under obstacles like rivers or roads.

Question 50: A technician is installing a gas range in a kitchen. The existing shutoff valve is a gate valve. What should the technician do?

Test the gate valve with a pressure gauge before proceeding
Proceed with installation using the existing gate valve
Add a second gate valve downstream for added security
Replace the gate valve with a listed ball valve before completing the installation (Correct answer)

Correct answer: Replace the gate valve with a listed ball valve before completing the installation

Gate valves are not acceptable for gas appliance shutoffs and must be replaced with a listed ball valve or cock that provides reliable full shutoff.

Question 51: What is the purpose of a ground fault circuit interrupter (GFCI) in the context of utility work safety near energized equipment?

It increases fault current to trip upstream breakers faster
It monitors insulation resistance of high-voltage cables
It detects small current imbalances to ground and interrupts the circuit, protecting workers from electrocution (Correct answer)
It prevents overvoltage from lightning on tool cords

Correct answer: It detects small current imbalances to ground and interrupts the circuit, protecting workers from electrocution

GFCIs sense as little as 4–6 mA of current leakage to ground and trip within milliseconds, protecting workers from lethal ground faults through the body.

Question 52: When interpreting a gas system schematic showing a 'PRV' symbol, what function does this device perform?

Prevents reverse gas flow
Monitors pipeline vibration remotely
Purges residual gas from a pipe section
Reduces upstream pressure to a lower set downstream pressure (Correct answer)

Correct answer: Reduces upstream pressure to a lower set downstream pressure

A PRV (Pressure Reducing Valve) automatically reduces higher inlet pressure to a lower, controlled outlet pressure for safe distribution.

Question 53: During a large-scale BGE outage event, what is the purpose of a 'damage assessment patrol'?

To calculate customer compensation amounts for extended outages
To photograph damage for BGE's public relations and social media communications
To survey the affected area and identify the type, location, and extent of damage before dispatching repair crews (Correct answer)
To collect documentation for insurance liability claims

Correct answer: To survey the affected area and identify the type, location, and extent of damage before dispatching repair crews

Damage assessment patrols allow BGE to accurately scope all repairs, prioritize the highest-impact work, and stage the correct crews and materials before restoration begins.

Question 54: A BGE gas distribution plan shows an 'EVC' symbol at a street intersection. What does EVC stand for?

Excess Flow Valve Check
Emergency Vent Control
Emergency Valve Control (Correct answer)
Earth Valve Cabinet

Correct answer: Emergency Valve Control

EVC stands for Emergency Valve Control, designating a location where crews can quickly isolate a section of the gas system during an emergency.

Question 55: During an excavation job, a BGE crew discovers an unmarked utility line. What is the correct immediate action?

Stop all digging and call 811 for re-marking (Correct answer)
Mark the line and continue mechanically
Report it at end of shift
Continue digging carefully by hand

Correct answer: Stop all digging and call 811 for re-marking

Work must stop immediately and 811 must be contacted to identify and re-mark the unmarked utility.

Question 56: A field technician encounters a downed power line after a storm. What is the correct action?

Attempt to move the line with a dry wooden pole
Assume it is de-energized and proceed with caution
Secure a perimeter and immediately notify BGE dispatch (Correct answer)
Touch the line to test if it is live

Correct answer: Secure a perimeter and immediately notify BGE dispatch

All downed power lines must be treated as energized; the technician should secure the area and notify dispatch immediately.

Question 57: When BGE installs underground residential distribution (URD) cable in a conduit under a public sidewalk, what minimum cover depth does the NEC (Table 300.5) require for PVC conduit (Schedule 80)?

6 inches
12 inches (Correct answer)
18 inches
24 inches

Correct answer: 12 inches

NEC Table 300.5 requires only 12 inches of cover for rigid PVC conduit (Schedule 80) under a concrete sidewalk.

Question 58: What does the term 'N-1 reliability criterion' mean in transmission planning?

One percent of customers may be without power at any time
Only one outage per month is acceptable
The network must have exactly one redundant path per substation
The grid must survive the loss of any single major element without cascading failure (Correct answer)

Correct answer: The grid must survive the loss of any single major element without cascading failure

The N-1 criterion requires that the bulk power system remain stable and within operating limits even after losing any single element, such as a line or transformer.

Question 59: A lineman is using a shotgun (disconnect) stick to operate a cutout fuse on an energized 13.2kV feeder. The lineman should stand:

Behind the pole, using the pole as an arc shield
On the uphill side of the pole for better leverage
At a 45° angle to the side of the cutout to avoid arc flash exposure (Correct answer)
Directly below the cutout to catch the fuse holder if it falls

Correct answer: At a 45° angle to the side of the cutout to avoid arc flash exposure

Standing at a 45° angle to the side positions the lineman out of the arc flash path and away from a falling fuse holder while maintaining control of the shotgun stick.

Question 60: What is the main environmental benefit of using wind energy for electricity generation?

Uses fossil fuel backup power
Requires minimal land use
Reduces air pollution and greenhouse gas emissions (Correct answer)
Provides constant energy output

Correct answer: Reduces air pollution and greenhouse gas emissions

The main environmental benefit of wind energy is that it generates electricity without burning fossil fuels, thereby producing no air pollutants or greenhouse gas emissions during operation. This significantly contributes to combating climate change and improving air quality.

Question 61: What is the primary purpose of using a gas detector before opening a meter set in an enclosed space?

To satisfy billing accuracy requirements
To detect combustible gas concentrations before creating an ignition risk (Correct answer)
To calibrate the pressure regulator
To verify the meter is reading correctly

Correct answer: To detect combustible gas concentrations before creating an ignition risk

Gas detectors identify explosive concentrations of natural gas before any spark-producing work begins.

Question 62: A gas technician needs to verify that a PE pipe fusion joint meets quality standards in the field. Without destructive testing, which method is used?

Visual inspection of bead profile and bead size consistency (Correct answer)
Hydrostatic pressure test at 3× MAOP for 24 hours
Electrical resistance check across the fusion zone
Ultrasonic thickness test of the bead

Correct answer: Visual inspection of bead profile and bead size consistency

Field quality verification of butt fusion joints relies on visual inspection of the bead width, height, and symmetry per ASTM and manufacturer guidelines, as non-destructive in-field alternatives are limited.

Question 63: What safety hazard is created when a downed BGE power line energizes the surrounding ground, creating a voltage gradient?

Back-feed from rooftop solar to the downed line
Step potential, which can electrocute anyone walking near the line (Correct answer)
Conductor sag causing a short circuit
Arc flash at the meter base

Correct answer: Step potential, which can electrocute anyone walking near the line

Step potential occurs when current flows through the ground from a downed energized conductor, creating dangerous voltage differences between footsteps.

Question 64: What type of wrench is required when connecting a stainless steel corrugated flexible gas connector to a brass valve to prevent galling?

Impact wrench to achieve rapid torque
Two wrenches — one to hold the valve body, one to turn the fitting (Correct answer)
Open-end wrench only on the connector; no counter-hold needed
Pipe wrench with serrated jaws

Correct answer: Two wrenches — one to hold the valve body, one to turn the fitting

Using two wrenches — one holding the stationary fitting and one turning the connector — prevents torque from being transmitted into the valve body or flexible connector tubing, avoiding joint damage and galling.

Question 65: Which BGE system is primarily used to aggregate customer outage reports and model fault locations?

SCADA
Customer billing database
Outage Management System (OMS) (Correct answer)
Geographic Information System (GIS) mapping only

Correct answer: Outage Management System (OMS)

BGE's Outage Management System aggregates customer calls and smart meter signals to model outage boundaries and efficiently dispatch repair crews.

Question 66: What is BGE's first priority when responding to a reported downed power line?

Restore power to affected customers as quickly as possible
Secure the scene and ensure public safety before any restoration work begins (Correct answer)
Contact the customer to verify the location of the downed line
Notify the billing department of the estimated outage duration

Correct answer: Secure the scene and ensure public safety before any restoration work begins

Public safety is always the top priority at a downed line incident; the area must be secured and bystanders kept away before restoration begins.

Question 67: Which unit is used to measure residential electric energy consumption on a BGE bill?

Watt
Volt
Kilowatt-hour (kWh) (Correct answer)
Ampere

Correct answer: Kilowatt-hour (kWh)

Residential electric energy consumption is measured in kilowatt-hours (kWh), which represents power usage over time.

Question 68: When using a hydraulic crimping tool on a high-voltage cable lug, what is the correct sequence of steps?

Insert lug, apply pressure, inspect crimp, release
Select die, insert lug, crimp, inspect, release pressure (Correct answer)
Inspect lug, insert cable, crimp, release pressure, verify die marks
Apply lubricant, insert cable, crimp twice, release

Correct answer: Select die, insert lug, crimp, inspect, release pressure

Proper crimping sequence requires selecting the correct die for the conductor size, inserting the lug, applying crimping pressure until the tool cycles, inspecting the crimp, then releasing pressure.

Question 69: On a utility as-built drawing, what is the primary purpose of recording field-verified measurements?

To replace the original design blueprint
To satisfy insurance requirements only
To document actual installed conditions that may differ from design drawings (Correct answer)
To create a bid document for future contractors

Correct answer: To document actual installed conditions that may differ from design drawings

As-built drawings capture the actual installed conditions, including any field changes, so future crews have accurate location data.

Question 70: What is a Time-of-Use (TOU) rate plan offered by BGE designed to accomplish?

Encourage customers to shift usage to off-peak hours by varying electricity prices by time of day (Correct answer)
Eliminate demand charges for commercial customers
Provide free electricity during overnight hours
Charge all customers the same flat rate regardless of usage time

Correct answer: Encourage customers to shift usage to off-peak hours by varying electricity prices by time of day

BGE's Time-of-Use plans charge higher rates during peak demand periods and lower rates off-peak to incentivize customers to shift discretionary usage.

Question 71: A BGE inspector finds that a gas main was installed at a shallower depth than the minimum required cover. The area has been paved. What should be recorded in the inspection report?

No entry needed if the pipe passed a pressure test
A simple note that depth was 'approximately correct'
A non-conformance report (NCR) with location, depth found, required depth, and corrective action required (Correct answer)
An internal memo that the contractor should do better next time

Correct answer: A non-conformance report (NCR) with location, depth found, required depth, and corrective action required

A formal non-conformance report documents the specific deficiency with measured data, location, applicable standard violated, and required corrective action.

Question 72: What does the 'W' designation in wire types like THWN indicate about the insulation material?

White-colored insulation
Rated for wet or damp locations (Correct answer)
Wound in a specific configuration
Woven braid outer jacket

Correct answer: Rated for wet or damp locations

In NEC wire designations, 'W' signifies the insulation is suitable for wet locations, meaning it resists moisture intrusion in conduit or direct burial applications.

Question 73: What information is typically recorded when a BGE field technician performs a meter exchange?

Old meter serial number with final reading, and new meter serial number with initial reading (Correct answer)
Customer name and credit score
Only the new meter serial number
Date and weather conditions only

Correct answer: Old meter serial number with final reading, and new meter serial number with initial reading

A complete meter exchange record captures the outgoing serial number with its final reading and the incoming serial number with its initial reading to ensure seamless billing continuity.

Question 74: Which factor affects the efficiency of electricity transmission?

Using higher voltage transmission lines (Correct answer)
Increasing the length of power lines
Reducing the number of substations
Using thicker insulation

Correct answer: Using higher voltage transmission lines

The efficiency of electricity transmission is significantly improved by using higher voltage transmission lines. Transmitting electricity at higher voltages reduces current, which in turn minimizes energy loss due to resistance (I²R losses) along the power lines. This allows electricity to travel longer distances with less waste, making the grid more efficient.

Question 75: Which ANSI standard governs the safety requirements for overhead electric supply and communication lines used by utilities like BGE?

ANSI C37
ANSI C84.1
ANSI Z535
ANSI C2 (NESC) (Correct answer)

Correct answer: ANSI C2 (NESC)

ANSI C2, the National Electrical Safety Code (NESC), governs overhead and underground electric supply lines for utilities.

Question 76: What color is used for BGE's caution tags in the lockout/tagout program?

Orange
Red
Green
Yellow (Correct answer)

Correct answer: Yellow

Yellow caution tags indicate a hazardous condition that is not immediately dangerous but requires corrective action.

Question 77: When a BGE customer service representative resolves a billing dispute, which documentation step is required?

Send a written summary of the resolution via mail or email within 30 days (Correct answer)
Verbal confirmation only is acceptable if the call is recorded
Escalate every dispute to a supervisor for sign-off
Close the ticket immediately after the call ends

Correct answer: Send a written summary of the resolution via mail or email within 30 days

BGE policy requires providing customers a written summary of dispute resolutions to ensure transparency and regulatory compliance.

Question 78: What does net metering mean for a BGE customer who has rooftop solar panels?

Paying only for net new appliances installed on the property
A program reserved for low-income customers
Receiving a billing credit for surplus electricity generated and fed back to the grid (Correct answer)
A discount for using only gas appliances

Correct answer: Receiving a billing credit for surplus electricity generated and fed back to the grid

Under net metering, BGE credits customers for excess solar electricity exported to the grid, offsetting charges for energy drawn from BGE.

Question 79: When inspecting electrical cable insulation before installation, what does a 'megger' test measure?

The cable's inductance per unit length
The insulation resistance in megohms to detect insulation deterioration or damage (Correct answer)
The cable's current-carrying ampacity
The short-circuit impedance of the cable

Correct answer: The insulation resistance in megohms to detect insulation deterioration or damage

A megohmmeter (megger) applies a high DC voltage to measure insulation resistance; low values indicate moisture intrusion, physical damage, or insulation degradation.

Question 80: Which insulation class is rated for continuous operation at 90°C for underground residential distribution (URD) cables?

Class C (90°C) — XLPE or EPR (Correct answer)
Class B (75°C)
Class H (180°C)
Class A (60°C)

Correct answer: Class C (90°C) — XLPE or EPR

Cross-linked polyethylene (XLPE) and ethylene propylene rubber (EPR) are standard 90°C-rated insulations used in URD cable installations.

Question 81: Under BGE's low-income assistance programs, which program provides bill credits to eligible Maryland customers?

Electric Universal Service Program (EUSP) (Correct answer)
BGE SMART Energy Savers Program
Peak Rewards Rebate Program
LIHEAP Energy Assistance

Correct answer: Electric Universal Service Program (EUSP)

The Electric Universal Service Program (EUSP) provides ongoing bill credits to income-qualified Maryland electric customers.

Question 82: What does a red tag on equipment indicate in BGE's lockout/tagout program?

Equipment requires routine maintenance
Equipment is out of service and must not be operated (Correct answer)
Equipment is ready for service
Equipment needs an inspection only

Correct answer: Equipment is out of service and must not be operated

Red tags signal a danger condition — the equipment is unsafe and must remain de-energized until cleared.

Question 83: What does 'restoration priority' mean during a BGE major outage event?

Commercial accounts are always restored before any residential customers
All customers are restored strictly in the order their outage was reported
Critical facilities and upstream transmission faults are addressed before individual residential outages (Correct answer)
Customers who have been without power the longest are always restored first

Correct answer: Critical facilities and upstream transmission faults are addressed before individual residential outages

BGE prioritizes transmission-level faults first because clearing them restores the most customers simultaneously, then addresses critical facilities, then works down to individual service restorations.

Question 84: Which NEC Article governs the installation of electrical conductors and equipment operating at over 1000 volts (medium and high voltage)?

NEC Article 490 (Correct answer)
NEC Article 300
NEC Article 700
NEC Article 230

Correct answer: NEC Article 490

NEC Article 490 covers equipment and wiring operating at over 1000 volts, including special requirements for materials, clearances, and protective systems at medium and high voltage.

Question 85: A customer reports that carbon monoxide detectors in their home are alarming. What should the BGE representative advise?

Evacuate immediately, call 911, and do not re-enter until cleared by emergency responders (Correct answer)
Open a window and call BGE for a next-day inspection
Reset the detector and monitor for 24 hours
Check the pilot light on the furnace before leaving

Correct answer: Evacuate immediately, call 911, and do not re-enter until cleared by emergency responders

Carbon monoxide is odorless and immediately dangerous; occupants must evacuate and call 911 — never investigate the source before leaving.

Question 86: What does the term 'qualified person' mean in the context of OSHA 29 CFR 1910.269 for electric utility work?

Any employee with more than one year of experience
An employee holding a state electrician's license
A person trained and knowledgeable in construction and operation of electric equipment and hazards (Correct answer)
A supervisor with OSHA 30-hour certification

Correct answer: A person trained and knowledgeable in construction and operation of electric equipment and hazards

OSHA 1910.269 defines a qualified person as one trained and knowledgeable about electric equipment construction, operation, and associated hazards.

Question 87: Which skill is most important for success in Tools & Equipment Operation within Baltimore Gas and Electric?

Continuous learning and adaptation (Correct answer)
Avoiding feedback
Working without any training
Resisting change

Correct answer: Continuous learning and adaptation

Continuous learning ensures professionals stay current with evolving practices in Tools & Equipment Operation.

Question 88: Why is it important for utility companies to follow safety compliance standards?

To eliminate customer service calls
To protect workers and customers from hazards (Correct answer)
To increase electricity prices
To reduce the number of employees

Correct answer: To protect workers and customers from hazards

Following safety compliance standards is crucial for utility companies to protect both their workers and the public from inherent hazards like electrocution, gas leaks, and equipment malfunctions. Adherence to these standards minimizes accidents, injuries, and potential fatalities, ensuring a safe operating environment.

Question 89: HDPE electrofusion fittings require a specific minimum preheat temperature before fusion. What happens if fusion occurs below the specified temperature?

No effect — temperature tolerance is wide
The fitting becomes brittle after cooling
The pipe melts too quickly
Incomplete fusion resulting in a weak joint with potential leak path (Correct answer)

Correct answer: Incomplete fusion resulting in a weak joint with potential leak path

Below-temperature fusion prevents adequate polymer chain entanglement, producing a joint with insufficient tensile strength that can fail under operating pressure or ground movement.

Question 90: A customer's electric service is scheduled for disconnection due to non-payment. Which of the following would temporarily prevent the disconnection?

The customer files a complaint with the Better Business Bureau
The customer promises to pay within the week
The customer submits a formal medical certificate to BGE (Correct answer)
The account has been overdue for less than 60 days

Correct answer: The customer submits a formal medical certificate to BGE

A valid medical certificate submitted to BGE can halt disconnection of essential service for a customer with a serious medical condition.

Question 91: On a gas distribution blueprint, what does a notation of 'T&B' next to a fitting location indicate?

Top and Bottom connection points
Test and Bypass valve arrangement (Correct answer)
Tee and Bypass configuration
Tie-in and Backfill sequence

Correct answer: Test and Bypass valve arrangement

T&B stands for Test and Bypass, indicating a valve arrangement that allows operators to test a section while maintaining gas flow via a bypass line.

Question 92: An inspector notices a gas meter set installed closer to a window opening than code allows. Which step should be taken first?

Document the deficiency and notify the responsible supervisor (Correct answer)
Seal the window opening
Immediately shut off gas to the meter
Remove the meter and reinstall it in the street

Correct answer: Document the deficiency and notify the responsible supervisor

The first step is to document the non-conformance and notify the supervisor so a corrective action plan can be developed per QC procedures.

Question 93: What is the main function of a substation in an electrical distribution system?

Convert high voltage to lower voltage (Correct answer)
Measure electricity usage
Store excess power
Generate electricity

Correct answer: Convert high voltage to lower voltage

The main function of a substation in an electrical distribution system is to transform high-voltage electricity from transmission lines into lower voltages suitable for local distribution. Transformers within the substation step down the voltage, making it safe and practical for delivery to homes and businesses through the local grid. This conversion is crucial for efficient and safe power delivery.

Question 94: When excavating near underground gas lines, contractors in Maryland are required by law to call the one-call notification system at least how many business days in advance?

5 business days
2 business days (Correct answer)
3 business days
1 business day

Correct answer: 2 business days

Maryland law requires contractors to notify the one-call center (Miss Utility / 811) at least 2 business days before excavation to allow utility marking.

Question 95: Which of the following best describes the purpose of BGE's 'Smart Energy Savers Program'?

It locks customers into a fixed energy rate for five years
It automatically shifts usage to off-peak hours without customer involvement
It offers rebates and incentives to customers who install energy-efficient equipment (Correct answer)
It provides free natural gas appliances to low-income customers

Correct answer: It offers rebates and incentives to customers who install energy-efficient equipment

The Smart Energy Savers Program encourages customers to reduce energy use by offering rebates and incentives for qualifying energy-efficient upgrades.

Question 96: What is the primary role of a BGE trouble technician during an outage response?

To coordinate housing and logistics for incoming mutual aid crews
To respond rapidly to individual outage calls, locate the fault, and restore service or make the scene safe for a larger crew (Correct answer)
To handle customer billing disputes that arise during the outage period
To remotely operate substation SCADA controls from a field tablet

Correct answer: To respond rapidly to individual outage calls, locate the fault, and restore service or make the scene safe for a larger crew

BGE trouble technicians are the first responders for individual outage events — they arrive quickly, diagnose the fault, and either restore service directly or prepare the site for a larger repair crew.

Question 97: What is the primary reason BGE requires photographic documentation during trench inspections?

To track the number of workers on site
To document equipment used by the contractor
To satisfy customer requests for photos of their property
To provide a verifiable record of installation conditions and compliance at the time of inspection (Correct answer)

Correct answer: To provide a verifiable record of installation conditions and compliance at the time of inspection

Photographs create an objective, time-stamped record of actual field conditions that supports compliance verification, dispute resolution, and regulatory audits.

Question 98: On a BGE construction drawing, what is the purpose of a 'match line'?

It denotes a property boundary line
It marks where two different materials are joined
It indicates where one drawing sheet continues on another sheet (Correct answer)
It shows where an inspection weld was performed

Correct answer: It indicates where one drawing sheet continues on another sheet

A match line is used when a project is too large to fit on one sheet; it shows where to find the continuation of the drawing on an adjacent sheet.

Question 99: In BGE's natural gas distribution system, what device reduces high-pressure transmission gas to lower pressures safe for residential delivery?

A gas compressor station
A metering and regulation (M&R) skid used only for industrial customers
A gas insulated switchgear (GIS) unit
A pressure regulating station (PRS) (Correct answer)

Correct answer: A pressure regulating station (PRS)

Pressure regulating stations reduce natural gas from transmission pressures (hundreds of psi) to the low pressures (typically under 0.25 psi) used in neighborhood mains.

Question 100: On a BGE electrical distribution drawing, what does the symbol of a circle with an 'X' inside typically represent?

A transformer
A fuse or cutout (Correct answer)
A streetlight
A junction box

Correct answer: A fuse or cutout

A circle with an X inside is a common symbol for a fuse or fused cutout on electrical distribution single-line diagrams.

Question 101: When selecting wire for a motor control center (MCC) operating at 600V, what minimum insulation voltage rating is typically required by the NEC?

600V rated wire (e.g., THWN-2 or XHHW-2) (Correct answer)
No rating required below 480V
1000V rated only
300V rated THHN

Correct answer: 600V rated wire (e.g., THWN-2 or XHHW-2)

The NEC requires conductors in 600V systems to have insulation rated for at least 600V; THWN-2 and XHHW-2 are common choices that also handle moisture.

Question 102: What should a utility worker do if they identify a gas leak in a customer’s home?

Attempt to repair the leak without proper gear
Evacuate the area and contact emergency services (Correct answer)
Ignore the issue if there is no visible flame
Advise the customer to open windows and wait

Correct answer: Evacuate the area and contact emergency services

If a utility worker identifies a gas leak, the immediate priority is safety: evacuate the area to prevent injury or explosion, and then contact emergency services (like 911 and the gas company's emergency line). Attempting to repair it without proper training and equipment is extremely dangerous.

Question 103: Which regulation requires BGE and other utilities to have an effective written hazard communication program covering chemical hazards in the workplace?

OSHA 29 CFR 1910.147
NFPA 70E
ANSI Z10
OSHA 29 CFR 1910.1200 (Correct answer)

Correct answer: OSHA 29 CFR 1910.1200

OSHA 29 CFR 1910.1200 (Hazard Communication Standard) requires employers to maintain a written hazard communication program including Safety Data Sheets.

Question 104: A lineman uses rubber insulating gloves rated Class 2. What is the maximum use voltage for Class 2 gloves?

17,000 volts AC
36,000 volts AC
26,500 volts AC (Correct answer)
7,500 volts AC

Correct answer: 26,500 volts AC

ASTM D120 specifies that Class 2 rubber insulating gloves have a maximum use voltage of 17,000 volts AC proof-tested at 20,000 volts, but the practical maximum use voltage listed in OSHA tables is 17kV—however per ASTM, rated use is 17kV; the maximum proof test is 20kV and rated use voltage ceiling is 17,000V.

Question 105: A BGE quality inspector is reviewing a contractor's material certifications. What is the inspector verifying?

That materials are the cheapest available option
That all materials are domestic-made
That materials meet the specified grade, standard, and traceability requirements (Correct answer)
That the contractor purchased materials locally

Correct answer: That materials meet the specified grade, standard, and traceability requirements

Material certifications confirm that materials conform to required specifications (e.g., ASTM, ANSI) and provide traceability to the manufacturer and heat/lot number.

Question 106: What is the key difference between a quality control (QC) inspection and a quality assurance (QA) audit in utility operations?

QC checks finished products; QA audits the processes and systems used to produce quality work (Correct answer)
QC requires laboratory testing; QA only uses checklists
QA is done by workers; QC is done by management
There is no practical difference between QC and QA

Correct answer: QC checks finished products; QA audits the processes and systems used to produce quality work

QC focuses on detecting defects in the actual work or product, while QA evaluates whether the overall processes and management systems are designed to prevent defects.

Question 107: When reading an isometric drawing of a gas piping system, what does it show that a standard plan view does not?

Soil classification data
Material specifications
Three-dimensional spatial relationships of pipes (Correct answer)
Pressure ratings of fittings

Correct answer: Three-dimensional spatial relationships of pipes

Isometric drawings represent a 3D view of piping systems, showing elevation changes and directional turns that a flat plan view cannot convey.

Question 108: A BGE inspector finds a gas service line with coating disbondment but no visible corrosion. What is the appropriate action?

Immediately replace the entire service line
No action needed if no corrosion is present
Apply cathodic protection and close the file
Document and schedule repair of the coating (Correct answer)

Correct answer: Document and schedule repair of the coating

Coating disbondment creates conditions for future corrosion and must be documented and repaired even before corrosion appears.

Question 109: On a gas distribution blueprint, a dashed line typically represents which of the following?

An underground or hidden line (Correct answer)
An active high-pressure main
A decommissioned service line
A future planned installation

Correct answer: An underground or hidden line

Dashed lines on utility blueprints indicate features that are hidden from view, such as underground pipes or conduits.

Question 110: What communication technology do BGE smart meters typically use to transmit usage data back to BGE?

Fiber optic cable
Wi-Fi 802.11n
Bluetooth
Radio frequency (RF) mesh network (Correct answer)

Correct answer: Radio frequency (RF) mesh network

BGE smart meters use a radio frequency mesh network to relay consumption data to BGE collection points without requiring a technician site visit.

Question 111: What is the purpose of a meter multiplier (meter constant) used on commercial BGE meters?

To scale register readings to actual consumption when current transformers are used (Correct answer)
To convert analog dial readings to digital format
To add a safety factor to billing calculations
To convert gas usage to an electric equivalent

Correct answer: To scale register readings to actual consumption when current transformers are used

A meter multiplier scales the meter register reading to actual consumption, required when instrument transformers step down current or voltage for metering purposes.

BGE Baltimore Gas and Electric Pre-Employment Test (EEI CAST)

The BGE pre-employment assessment uses the EEI Construction and Skilled Trades Selection System (CAST) to evaluate candidates for skilled utility positions across blueprint reading, mechanical concepts, safety compliance, and metering operations.

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25 min

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70%

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