Mixed Deck — All AEP Topics Flashcards

In electrical applications, which material is most commonly used for overhead transmission line conductors due to its combination of conductivity and strength?

Answer: ACSR (Aluminum Conductor Steel Reinforced)

ACSR combines the high conductivity of aluminum with the tensile strength of a steel core, making it ideal for long-span overhead transmission lines.

Which NERC reliability standard specifically addresses transmission planning requirements for bulk electric systems?

Answer: TPL-001

NERC TPL-001 (Transmission Planning) establishes requirements for planning the bulk electric system to withstand contingencies while maintaining reliability.

What does AEP's 'Integrated Resource Plan' (IRP) primarily determine?

Answer: Long-term mix of generation resources to meet customer demand

An IRP outlines the utility's long-term strategy for balancing supply resources — including renewables — to reliably and economically serve customer load.

Under IEEE 80, what factor is used to limit touch and step potential hazards during ground fault events at substations?

Answer: Designing the grounding grid to maintain safe voltage gradients

IEEE 80 provides criteria for grounding grid design that limits touch and step potentials to safe levels during ground fault events.

AEP's 'clean energy transition' plan phases out coal while adding renewables. What grid reliability concern must be managed during this transition?

Answer: Maintaining sufficient dispatchable capacity to serve load when wind and solar are unavailable

As intermittent renewables replace dispatchable coal, utilities must ensure enough firm capacity — gas, storage, or demand response — is available to meet peak load when renewable output is low.

Which NERC region does AEP's transmission system primarily operate within?

Answer: RFC and SERC

AEP's footprint spans the ReliabilityFirst Corporation (RFC) and SERC Reliability Corporation regions, covering states from Michigan to Louisiana.

An automatic recloser operates three times and locks out. The feeder remains de-energized. What is the correct next step?

Answer: Patrol and inspect the feeder for a permanent fault before re-energizing

Lockout after three operations indicates a permanent fault; a physical inspection must locate and clear the fault before re-energizing.

When connecting conductors to a compression lug on high-voltage cable terminations, what is the first inspection step after crimping?

Answer: Verify the crimp indent depth with a go/no-go gauge

A go/no-go gauge confirms that the crimp indent reached the minimum depth required for a gas-tight, low-resistance connection.

What is the minimum horizontal distance that primary distribution conductors must maintain from a building's window or door per NESC rules?

Answer: 3 feet

NESC Rule 234 requires primary conductors to maintain at least 3 feet of horizontal clearance from windows, doors, and other building openings.

What does power factor measure in an electrical system?

Answer: The ratio of real power to apparent power

Power factor is the ratio of real power (kW) to apparent power (kVA), indicating how efficiently electrical power is being used.

During a substation inspection, an employee notices an unlocked gate to the high-voltage switchyard. The correct immediate action is to:

Answer: Secure the gate and report the condition to supervision

Unauthorized access to high-voltage areas is a serious safety hazard; the gate should be secured immediately and the finding reported to supervision.

Why is porcelain still widely used for high-voltage outdoor insulators despite newer polymer alternatives?

Answer: Porcelain has proven long-term performance, high compressive strength, and excellent resistance to UV and surface tracking

Porcelain insulators have decades of proven reliability in outdoor environments, offering excellent compressive strength, UV resistance, and resistance to surface contamination tracking.

What does the 'temper designation' H14 indicate for aluminum alloy?

Answer: The alloy has been strain-hardened to approximately half-hard condition

In the H-temper series, H14 indicates strain-hardened to a half-hard condition (second digit 4 = halfway between annealed and full-hard).

In grid reliability terminology, what does 'N-1 contingency' mean?

Answer: The grid can continue operating after losing any single element

N-1 contingency means the system can withstand the loss of any single element (line, transformer, or generator) without cascading failures or customer outages.

When using a conduit bender to make a 90-degree stub-up in metallic conduit, the 'shrink' must be accounted for to achieve the correct finished height. This means the bender mark should be placed:

Answer: At the finished height minus the shrink amount

The stub-up shortens due to the bend arc (shrink), so the mark is placed at the desired height minus the shrink to achieve the correct finished dimension.

Which condition on a fiberglass hot stick would require it to be immediately removed from service?

Answer: Surface tracking, cracks, or moisture contamination on the insulated section

Surface tracking, cracks, or moisture on a hot stick's insulated section compromises its dielectric properties and creates a lethal shock hazard for the user.

When installing a self-healing capacitor bank on a distribution feeder, what grounding practice is required?

Answer: Ground the capacitor bank frame and neutral to the system neutral

Both the capacitor bank frame and the capacitor neutral must be grounded to the system neutral to ensure proper fault protection and overvoltage control.

Which type of glove insulation class is rated for up to 17,000 volts AC?

Answer: Class 2

Class 2 rubber insulating gloves are rated for a maximum use voltage of 17,000 volts AC.

Which document must be completed and reviewed with the crew before beginning a high-hazard task at AEP?

Answer: Job Hazard Analysis (JHA) / Job Briefing

A Job Hazard Analysis and pre-job briefing identify hazards, required PPE, and safe work procedures before the crew begins the task.

What does a solid triangle symbol at the end of a dimension line on a blueprint indicate?

Answer: A filled arrowhead marking the extent of a dimension

A solid filled triangle at the end of a dimension line serves as an arrowhead, indicating the precise point where the dimension measurement terminates.