EVITP Electrical Vehicle Infrastructure Certification Exam — Questions and Answers

Question 1: Under NEVI program standards, what is the minimum power output required for each DC fast charger port at a funded station?

350 kW
19.2 kW
50 kW
150 kW (Correct answer)

Correct answer: 150 kW

NEVI standards require each DCFC port to deliver at least 150 kW to support current and near-future EV charging needs.

Question 2: A highway rest area EVSE project must comply with NEVI uptime requirements. What minimum operational availability percentage must each port achieve?

95% (Correct answer)
85%
90%
99%

Correct answer: 95%

NEVI standards require funded EVSE ports to achieve at least 97% uptime, commonly rounded in guidance to a 95%+ operational threshold.

Question 3: In a dwelling-unit load calculation under the 2023 NEC (220.57), what load must you use for EVSE?

5,000 W or the nameplate rating, whichever is larger
The nameplate rating only
7,200 W or the nameplate rating, whichever is larger (Correct answer)
80% of the nameplate rating

Correct answer: 7,200 W or the nameplate rating, whichever is larger

NEC 220.57 sets the EVSE load at 7,200 W (volt-amperes) or the equipment's nameplate rating, whichever is larger.

Question 4: What wire sizing factors apply to EV charging?

Manufacturer decides only
Continuous load rating, voltage drop, ambient temperature, conduit fill (Correct answer)
Only length matters
Any wire size works

Correct answer: Continuous load rating, voltage drop, ambient temperature, conduit fill

Multiple factors beyond just current draw affect wire sizing.

Question 5: Which of the following is a common type of incentive for businesses to install EV charging stations?

Installation grants or subsidies (Correct answer)
Reduced utility bills
Direct vehicle purchase subsidies
Property tax rebates

Correct answer: Installation grants or subsidies

Governments and utilities often provide installation grants or subsidies to businesses, workplaces, and multi-unit dwellings to offset the significant upfront costs of purchasing and installing EV charging equipment. These financial incentives encourage wider deployment of charging infrastructure. By reducing the economic barrier, more organizations are motivated to participate in expanding the charging network.

Question 6: What is smart charging?

Faster charging
AI battery optimization
Network-connected charging with remote management and optimization (Correct answer)
Wireless charging

Correct answer: Network-connected charging with remote management and optimization

Smart charging adds management and optimization through connectivity.

Question 7: A fleet operator converting to EVs needs to determine overnight charging requirements. Which metric is most useful for right-sizing the EVSE?

State EV rebate amounts available
Number of charging sessions per week
Fleet vehicle MSRP
Daily miles driven per vehicle and vehicle onboard charger acceptance rate (Correct answer)

Correct answer: Daily miles driven per vehicle and vehicle onboard charger acceptance rate

Daily mileage converts to required kWh, and the onboard charger rate determines how long charging takes, together sizing the EVSE.

Question 8: What is energy management integration for EV charging?

An HVAC setting
A lighting control
Coordinating EV charging with building energy systems and solar/storage (Correct answer)
A separate billing system

Correct answer: Coordinating EV charging with building energy systems and solar/storage

Integrating EV charging with other building systems optimizes energy use.

Question 9: Which DC fast-charging standard uses CAN bus communication rather than PLC?

CHAdeMO (Correct answer)
CCS1
CCS2
SAE J3400 DC mode

Correct answer: CHAdeMO

CHAdeMO uses a CAN bus link between vehicle and charger.

Question 10: 'Plug & Charge' allows a driver to start a session without an app or card. Which standard enables it?

ISO 15118 with digital certificates (Correct answer)
NEC Article 625
OCPI 2.2
UL 2594

Correct answer: ISO 15118 with digital certificates

ISO 15118 uses PKI certificates stored in the vehicle to authenticate and bill automatically.

Question 11: Under ADA guidelines, what is the maximum height for operable parts (buttons, card readers) on an EV charging station serving accessible spaces?

48 inches above the floor (Correct answer)
54 inches above the floor
42 inches above the floor
60 inches above the floor

Correct answer: 48 inches above the floor

ADA requires operable parts to be no higher than 48 inches above the finished floor to be reachable from a wheelchair.

Question 12: Which SAE standard covers automated overhead (pantograph) conductive charging, as used for transit buses?

SAE J1772
SAE J1939
SAE J3105 (Correct answer)
SAE J2954

Correct answer: SAE J3105

SAE J3105 defines automated conductive charging through connection devices such as overhead pantographs, which are common at transit bus layover points.

Question 13: Under NFPA 70E, the arc flash boundary is the distance at which incident energy equals what value?

1.2 cal/cm² (Correct answer)
8 cal/cm²
4 cal/cm²
0.5 cal/cm²

Correct answer: 1.2 cal/cm²

The arc flash boundary is where incident energy reaches 1.2 cal/cm², the onset of a second-degree burn.

Question 14: Which vehicle type has both an internal combustion engine and a battery that can be recharged from an external outlet?

Fuel cell electric vehicle (FCEV)
Conventional hybrid electric vehicle (HEV)
Plug-in hybrid electric vehicle (PHEV) (Correct answer)
Battery electric vehicle (BEV)

Correct answer: Plug-in hybrid electric vehicle (PHEV)

A PHEV combines a gasoline engine with a battery charged by plugging into EVSE.

Question 15: What is load management for multiple EV chargers?

Distributing available capacity among chargers to stay within limits (Correct answer)
A scheduling app
A billing system
A parking management system

Correct answer: Distributing available capacity among chargers to stay within limits

Load management shares limited electrical capacity among multiple charging points.

Question 16: Under the NEC, may Class 2 Ethernet data cable for a charger be installed in the same raceway as the 240 V branch circuit conductors feeding it?

Yes, if the data cable is shielded
Only if the raceway is PVC
Generally no, unless separated by a barrier or a specific NEC exception applies (Correct answer)
Yes, always, because both serve the same equipment

Correct answer: Generally no, unless separated by a barrier or a specific NEC exception applies

NEC Articles 725 and 800 generally require separation of power-limited and communications cables from power conductors.

Question 17: To meet accessibility guidelines, controls and the connector on an accessible EVSE should generally be within what unobstructed reach range above the ground?

24 to 60 inches
36 to 72 inches
15 to 48 inches (Correct answer)
6 to 36 inches

Correct answer: 15 to 48 inches

ADA unobstructed reach range is 15 to 48 inches above the finished surface.

Question 18: What is the minimum number of DCFC ports required at each NEVI-funded charging location?

2 ports
6 ports
1 port
4 ports (Correct answer)

Correct answer: 4 ports

NEVI standards require each funded location to have a minimum of 4 DCFC ports simultaneously available to drivers.

Question 19: What safety features are built into EV charging systems?

Only a fuse
Only a power switch
Ground fault detection, over-temperature protection, communication protocols, and automatic shutoff (Correct answer)
No safety features

Correct answer: Ground fault detection, over-temperature protection, communication protocols, and automatic shutoff

Multiple layers of safety protection are integrated into the system.

Question 20: How does wireless charging technology for EVs typically work?

By using inductive charging through a charging pad on the ground (Correct answer)
By using solar panels to charge the vehicle directly
By transferring power via a radio signal
By using a physical connection between the car and the charging unit

Correct answer: By using inductive charging through a charging pad on the ground

Wireless EV charging technology operates on the principle of electromagnetic induction. A charging pad embedded in the ground transmits energy wirelessly to a receiver coil mounted on the underside of the EV, eliminating the need for physical cables. This offers convenience and a seamless charging experience, as users simply park over the pad to charge.

Question 21: Which condition typically causes an EVSE to enter sleep or standby mode automatically?

No vehicle connected for an extended period (Correct answer)
A full battery detected in the vehicle
A voltage surge on the circuit
High outdoor ambient temperature

Correct answer: No vehicle connected for an extended period

Most EVSE units enter sleep or standby mode automatically when no vehicle has been connected for a configured time period to conserve energy.

Question 22: Which type of power agreement allows a business to install EVSE with no upfront capital cost by having a third party own and operate the chargers?

Direct purchase agreement
Net metering contract
Charging-as-a-Service (CaaS) or EVSE-as-a-Service model (Correct answer)
Municipal bond financing

Correct answer: Charging-as-a-Service (CaaS) or EVSE-as-a-Service model

CaaS models let a third-party provider own, install, and maintain chargers while the host site pays per session or a flat fee.

Question 23: Per NEC Table 250.122, what is the minimum copper equipment grounding conductor size for a 60 A EVSE branch circuit?

6 AWG
8 AWG
10 AWG (Correct answer)
12 AWG

Correct answer: 10 AWG

For an OCPD rated up to 60 A, the minimum copper EGC is 10 AWG.

Question 24: Per NEC 110.14(C), circuits rated 100 A or less must use the 60°C ampacity column unless what is true?

The run is less than 50 ft
The circuit is installed outdoors
The terminations are listed and marked for 75°C (Correct answer)
The conductors are aluminum

Correct answer: The terminations are listed and marked for 75°C

Using the 75°C column requires equipment terminations listed and identified for 75°C.

Question 25: What is the recommended idle fee strategy that balances revenue recovery for station operators with equitable user experience for all EV drivers?

Prohibit idle fees entirely at public charging stations
Begin idle fees only after a grace period following session completion, with advance notification to the driver (Correct answer)
Apply idle fees only to non-network-member drivers
Charge idle fees at all times to maximize turnover

Correct answer: Begin idle fees only after a grace period following session completion, with advance notification to the driver

A grace period after charging completes, paired with a notification, gives drivers a fair opportunity to return before fees accrue, balancing turnover with equitable access.

Question 26: What is the 80% continuous load rule?

Battery charges to 80% only
80% efficiency requirement
80% of spaces need chargers
EV charging load must not exceed 80% of breaker rating for 3+ hour operation (Correct answer)

Correct answer: EV charging load must not exceed 80% of breaker rating for 3+ hour operation

Continuous loads (3+ hours) cannot exceed 80% of circuit protection rating.

Question 27: After installing a networked EVSE, which commissioning activity best confirms the installation is ready for customer use?

Confirming the breaker size matches the panel directory
Measuring ambient temperature at the site
Checking only that the power LED is on
Verifying firmware, network communication, and a successful test charge session (Correct answer)

Correct answer: Verifying firmware, network communication, and a successful test charge session

Commissioning verifies firmware, connectivity, and actual charging operation before handover.

Question 28: Which standard defines the technical requirements for interconnecting distributed energy resources, including bidirectional EV systems, with the electric power system?

IEEE 519
SAE J1772
UL 2594
IEEE 1547 (Correct answer)

Correct answer: IEEE 1547

IEEE 1547 sets interconnection and interoperability requirements for DER connected to the grid.

Question 29: An outdoor 240 V receptacle for EV charging is installed in a wet location. What type of cover is required per NEC 406.9(B)?

A standard plastic blank cover
An extra-duty, weatherproof in-use cover (Correct answer)
No cover if the receptacle is GFCI protected
A flat weatherproof cover rated only when closed

Correct answer: An extra-duty, weatherproof in-use cover

Receptacles in wet locations must have an enclosure that is weatherproof whether or not a plug is inserted, listed extra-duty.

Question 30: What is an onboard charger in an EV?

The vehicles built-in AC-to-DC converter that charges the battery from AC sources (Correct answer)
The dashboard display
The battery itself
The charging cable

Correct answer: The vehicles built-in AC-to-DC converter that charges the battery from AC sources

This converter inside the vehicle changes AC power to DC for the battery.

Question 31: What is a common challenge when planning the installation of DC Fast Chargers in urban areas?

Limited charging standards
Low demand for fast charging
High installation cost (Correct answer)
Inadequate parking space

Correct answer: High installation cost

DC Fast Chargers require significant electrical infrastructure upgrades, including high-power transformers and specialized wiring, to deliver rapid charging speeds. This often involves substantial upfront investment in equipment and grid connections. Consequently, high installation cost is a major challenge, especially in densely populated urban areas where space and utility access can be complex.

Question 32: What does an EVSE 'de-rating' event indicate, and what typically triggers it?

The charger is reducing its output power, usually due to high internal temperature or grid demand response signal (Correct answer)
The charger has upgraded its firmware and is restarting
The user's account has exceeded the authorized energy limit for the session
The vehicle has reached 100% state of charge and is tapering current normally

Correct answer: The charger is reducing its output power, usually due to high internal temperature or grid demand response signal

De-rating occurs when the EVSE reduces output power below its rated maximum, most commonly triggered by thermal protection of internal components or an external demand response command.

Question 33: A user reports the charging connector latch will not release and the cable cannot be removed from the vehicle. Which J1772 circuit is associated with the latch release button?

Control pilot
Proximity pilot (Correct answer)
Neutral conductor
Equipment grounding conductor

Correct answer: Proximity pilot

The J1772 proximity pilot circuit changes resistance when the latch button is pressed, signaling the vehicle to stop charging before disconnection.

Question 34: The NEVI program requires that funded stations offer payment options that do not require a mobile app or membership. Which payment method satisfies this requirement?

QR code scan only
Contactless payment (credit/debit card) via a payment terminal at the station (Correct answer)
Fleet card payment exclusively
Driver account pre-registration only

Correct answer: Contactless payment (credit/debit card) via a payment terminal at the station

NEVI mandates credit/debit card payment at the station so any driver can pay without needing an app, account, or membership.

Question 35: A liquid-cooled DC fast charger derates power output on hot afternoons. Which maintenance item should be inspected first?

The payment terminal firmware
The parking space signage
The RFID reader
Air filters, heat exchanger fins, and coolant level (Correct answer)

Correct answer: Air filters, heat exchanger fins, and coolant level

Clogged filters, dirty heat exchangers, or low coolant reduce heat rejection and cause thermal derating of power modules.

Question 36: What is curtailment in the context of managed EV charging operations?

Increasing charging speed during high-demand peak periods
Limiting physical access to charging stations for non-members
Reducing the total number of chargers installed at a site
Reducing or stopping EV charging to lower grid load during high-demand events (Correct answer)

Correct answer: Reducing or stopping EV charging to lower grid load during high-demand events

Curtailment in managed charging refers to intentionally reducing or halting EV charging sessions to decrease electrical load during grid stress events.

Question 37: Which type of meter should be used to measure insulation resistance in EVSE wiring?

Clamp meter
Megohmmeter (Correct answer)
Voltmeter
Wattmeter

Correct answer: Megohmmeter

A megohmmeter (megger) applies high voltage to measure insulation resistance and detect wiring degradation in EVSE circuits.

Question 38: What does SAE J2954 address?

Battery thermal management
Wireless (inductive) power transfer for light-duty EVs (Correct answer)
AC conductive charging couplers
Megawatt charging for heavy trucks

Correct answer: Wireless (inductive) power transfer for light-duty EVs

J2954 covers wireless inductive charging, including alignment and power classes.

Question 39: What is the difference between Level 2 and DC fast charging voltage?

Both are 120V
Level 2 is higher
No difference
Level 2 is 208-240V AC; DC fast is 200-1000V DC (Correct answer)

Correct answer: Level 2 is 208-240V AC; DC fast is 200-1000V DC

DC fast charging operates at much higher voltages.

Question 40: What does vehicle-to-grid (V2G) capability allow an EV to do?

Communicate charging status to a smartphone app
Charge wirelessly through an inductive pad
Charge faster from the grid during peak hours
Send stored battery energy back to the utility grid (Correct answer)

Correct answer: Send stored battery energy back to the utility grid

V2G uses bidirectional charging so the vehicle can export power to the grid.

Question 41: Which maintenance task helps prevent connector degradation at EVSE installations?

Painting the connector housing
Cleaning contacts and inspecting for wear regularly (Correct answer)
Increasing charging current
Replacing cables annually

Correct answer: Cleaning contacts and inspecting for wear regularly

Regular cleaning of electrical contacts and visual inspection for wear prevents connection degradation and ensures reliable charging performance.

Question 42: An EVSE displays a ground-monitoring fault immediately at power-up with no vehicle connected. What should be checked first?

The pilot PWM duty cycle
The vehicle's onboard charger
The OCPP server certificate
Continuity and termination of the equipment grounding conductor (Correct answer)

Correct answer: Continuity and termination of the equipment grounding conductor

Ground-monitoring faults with no vehicle connected usually indicate an open, loose, or missing equipment grounding conductor at the supply.

Question 43: What minimum width of accessible route must be maintained from the parking stall to an EV charging station under ADA standards?

48 inches
42 inches
36 inches (Correct answer)
30 inches

Correct answer: 36 inches

ADA requires a continuous accessible route of at least 36 inches wide connecting accessible parking to the charging equipment.

Question 44: How does a network-managed EVSE interact with grid demand signals?

It monitors local weather conditions for charging efficiency
It automatically adjusts charging rate based on grid demand signals or utility commands (Correct answer)
It manages parking access and enforcement
It tracks and schedules vehicle maintenance appointments

Correct answer: It automatically adjusts charging rate based on grid demand signals or utility commands

Network-managed EVSE can receive grid demand signals or utility commands to adjust charging rates, supporting demand response and grid stability programs.

Question 45: Which UL standard covers the safety of AC electric vehicle supply equipment (Level 1 and Level 2)?

UL 2202
UL 1741
UL 9741
UL 2594 (Correct answer)

Correct answer: UL 2594

UL 2594 covers AC EVSE, while UL 2202 covers DC charging system equipment.

Question 46: When planning EVSE for a grocery store parking lot, which demand management approach reduces peak power charges most effectively during store hours?

Installing only Level 1 chargers to limit power draw
Scheduling charger availability only during off-peak utility hours
Using smart EVSE that caps total site load and throttles sessions during peak demand (Correct answer)
Requiring customers to pre-register before charging

Correct answer: Using smart EVSE that caps total site load and throttles sessions during peak demand

Smart EVSE with site-level demand limiting automatically reduces charge rates during peak periods, capping demand charges.

Question 47: The North American Charging Standard (NACS) connector has been standardized by SAE as which document?

SAE J2954
SAE J3400 (Correct answer)
SAE J3068
SAE J1772

Correct answer: SAE J3400

SAE published the NACS connector as SAE J3400.

Question 48: Under NEVI program rules, charging stations must be located no more than how many miles apart along designated corridors?

75 miles
50 miles (Correct answer)
25 miles
100 miles

Correct answer: 50 miles

NEVI requires EV charging stations to be spaced no more than 50 miles apart along Alternative Fuel Corridors to ensure continuous coverage.

Question 49: Which feature of a charging network mobile app most directly supports drivers with cognitive disabilities during a charging session?

Step-by-step guided session start with visual progress indicators (Correct answer)
Ability to share session data on social media
Background music during charging
Dark mode toggle

Correct answer: Step-by-step guided session start with visual progress indicators

Step-by-step guidance with clear visual progress cues reduces cognitive load and helps users with cognitive disabilities complete the charging process independently.

Question 50: A 150 kW DC fast charger runs at a power factor of 0.95. Approximately how much apparent power must the supply transformer deliver to it?

175 kVA
143 kVA
150 kVA
158 kVA (Correct answer)

Correct answer: 158 kVA

Apparent power equals real power divided by power factor, so 150 kW ÷ 0.95 ≈ 158 kVA.

Question 51: When sizing a service panel for a new EVSE installation, NEC 625.42 requires continuous-load calculations at what percentage of the EVSE rated current?

80%
125% (Correct answer)
110%
100%

Correct answer: 125%

NEC 625.42 requires EVSE branch circuits to be rated at 125% of the continuous EV charging load for safety margin.

Question 52: Which protocol enables roaming between different charging network operators and e-mobility service providers?

SAE J2954
OCPI (Correct answer)
DIN 70121
OCPP

Correct answer: OCPI

OCPI (Open Charge Point Interface) exchanges data between networks for roaming and billing.

Question 53: What is the purpose of the contactor in a DC fast charging station?

Regulate output voltage to the vehicle
Measure energy delivered to the vehicle
Convert AC input power to DC output power
Isolate high-voltage DC from the output connector when not charging (Correct answer)

Correct answer: Isolate high-voltage DC from the output connector when not charging

The contactor is a high-current switch that physically connects or disconnects the DC bus from the charging connector, ensuring safety when the connector is not engaged.

Question 54: What does a ground fault in an EVSE typically indicate?

Normal operation
An unintended path of current to ground (Correct answer)
High voltage output
Low charging speed

Correct answer: An unintended path of current to ground

A ground fault indicates current is flowing along an unintended path to ground, which is a safety hazard requiring immediate attention.

Question 55: Which executive order directed federal agencies to develop plans for transitioning their vehicle fleets to zero-emission vehicles, directly spurring demand for federal EV infrastructure?

Executive Order 13990
Executive Order 13771
Executive Order 14008 (Tackling the Climate Crisis)
Executive Order 14057 (Catalyzing Clean Energy) (Correct answer)

Correct answer: Executive Order 14057 (Catalyzing Clean Energy)

EO 14057 directed federal agencies to transition to zero-emission vehicles and accelerate clean energy deployment across federal operations.

Question 56: Which standard defines the North American Charging Standard (NACS) connector as an SAE standard?

SAE J2954
SAE J1772
SAE J3400 (Correct answer)
SAE J3068

Correct answer: SAE J3400

SAE standardized the Tesla-developed NACS connector as J3400.

Question 57: An EVSE repeatedly trips its charging circuit interrupting device (CCID) only when a specific vehicle is plugged in. What is the most logical first troubleshooting step?

Re-terminate the service entrance conductors
Increase the CCID trip threshold
Replace the upstream branch breaker
Test the EVSE with a different vehicle or EV simulator (Correct answer)

Correct answer: Test the EVSE with a different vehicle or EV simulator

Swapping in a known-good vehicle or EV test adapter isolates whether the ground-fault leakage originates in the EVSE or the vehicle.

Question 58: Which OCPP smart charging message lets a central system limit a charger's power to manage site load?

RemoteStartTransaction
ChangeAvailability
DataTransfer
SetChargingProfile (Correct answer)

Correct answer: SetChargingProfile

SetChargingProfile sends power or current limits and schedules to the charging station.

Question 59: The OCPI (Open Charge Point Interface) protocol is primarily designed for:

Configuring circuit breaker trip settings
Physical installation procedures at EVSE sites
Monitoring EV battery state of health
Enabling roaming between different EV charging networks (Correct answer)

Correct answer: Enabling roaming between different EV charging networks

OCPI is an open protocol that enables different EV charging networks to share data and allow driver roaming, so users can charge across multiple network operators.

Question 60: What is a sub-panel for EV charging?

A display screen
A battery monitor
Additional panel providing dedicated circuit space for EV chargers (Correct answer)
A billing panel

Correct answer: Additional panel providing dedicated circuit space for EV chargers

A sub-panel provides additional circuit space when the main panel is full.

Question 61: What does ISO 15118's Plug & Charge (PnC) feature primarily improve from a user experience standpoint?

It enables wireless charging without a physical plug
It increases charging speed by 30%
It standardizes connector shapes across all networks
It eliminates the need for cards or apps by authenticating via the cable connection (Correct answer)

Correct answer: It eliminates the need for cards or apps by authenticating via the cable connection

Plug & Charge (ISO 15118) allows the vehicle to automatically authenticate and authorize payment when connected, removing manual steps for users.

Question 62: What does the electrical service stacking approach provide for large EV charging deployments?

A way to connect vehicle batteries in series for more power
Installation of chargers in a stacked vertical array
A method for physically stacking chargers to save space
Multiple utility service entrances to distribute load and avoid a single large service upgrade (Correct answer)

Correct answer: Multiple utility service entrances to distribute load and avoid a single large service upgrade

Using multiple utility service entrances distributes the total electrical load across separate feeds, avoiding the cost of a single very large service upgrade.

Question 63: For a 120/240 V panelboard with exposed live parts on one side and grounded parts on the other (Condition 2), what is the minimum working space depth per NEC Table 110.26(A)(1)?

3 ft (Correct answer)
3.5 ft
5 ft
4 ft

Correct answer: 3 ft

For 0–150 V to ground, all three conditions require a 3 ft minimum depth.

Question 64: Which communication protocol is most commonly used by EVSE to communicate with the electric vehicle during a DC fast charge session?

Modbus RTU
ZigBee
Combined Charging System (CCS) PLC (Correct answer)
CAN bus

Correct answer: Combined Charging System (CCS) PLC

CCS uses Power Line Communication (PLC) over the pilot line to enable the vehicle and EVSE to negotiate charging parameters during DC fast charging.

Question 65: Which DC fast-charging standard originated in Japan?

CCS1
GB/T
CHAdeMO (Correct answer)
NACS

Correct answer: CHAdeMO

CHAdeMO was developed by Japanese automakers and utilities.

Question 66: What does 'galvanic isolation' between the AC input and DC output of a charger provide?

A fixed output voltage regardless of battery state of charge
Higher efficiency through reduced switching losses
Electrical separation that prevents DC fault current from flowing back onto the AC grid (Correct answer)
Protection against overvoltage from the vehicle battery

Correct answer: Electrical separation that prevents DC fault current from flowing back onto the AC grid

Galvanic isolation, typically achieved with a transformer in the power stage, prevents DC ground faults on the vehicle side from propagating to the AC supply side.

Question 67: During infrastructure planning, which factor most directly determines whether a site needs a demand charge management system?

Total square footage of the parking lot
Age of the existing electrical panel
Number of EV models expected to charge
Utility rate structure with significant demand charges (Correct answer)

Correct answer: Utility rate structure with significant demand charges

Demand charges are based on peak power draw; a utility rate with high demand charges makes management systems economically necessary.

Question 68: What is the nominal operating frequency for SAE J2954 light-duty wireless charging?

1 kHz
About 85 kHz (Correct answer)
60 Hz
2.4 GHz

Correct answer: About 85 kHz

SAE J2954 uses a nominal frequency of about 85 kHz, within a band of roughly 79 to 90 kHz.

Question 69: What is smart charging in the context of EVSE installations?

Managing EV charging based on grid signals, pricing, or load conditions (Correct answer)
Using AI to predict weather patterns
Charging vehicles faster than standard rates
Installing chargers only in smart buildings

Correct answer: Managing EV charging based on grid signals, pricing, or load conditions

Smart charging uses communication between the EVSE, grid, and energy management systems to optimize charging timing, rate, and cost.

Question 70: What is the role of EVSE?

A solar panel
Managing power delivery safely between supply and vehicle (Correct answer)
A fancy extension cord
The car battery charger

Correct answer: Managing power delivery safely between supply and vehicle

EVSE is the intelligent interface between grid and vehicle.

Question 71: What is battery thermal management?

Air conditioning for the cabin
Tire pressure monitoring
Systems to maintain optimal battery temperature for performance and longevity (Correct answer)
Engine cooling

Correct answer: Systems to maintain optimal battery temperature for performance and longevity

Batteries perform best within a specific temperature range.

Question 72: Which standard defines the requirements for EV supply equipment used in residential and commercial installations in the United States?

UL 2202
UL 2594 (Correct answer)
IEC 61851-1
SAE J2293

Correct answer: UL 2594

UL 2594 is the Standard for Electric Vehicle Supply Equipment and covers safety requirements for EV charging equipment installed in the US.

Question 73: Which version of the vehicle-to-charger communication standard added full support for bidirectional power transfer (V2G)?

SAE J1772 Level 1
IEC 61851-1 Edition 1
ISO 15118-2
ISO 15118-20 (Correct answer)

Correct answer: ISO 15118-20

ISO 15118-20 adds bidirectional power transfer and other advanced features beyond ISO 15118-2.

Question 74: What is the primary purpose of OpenADR in an EV charging installation?

Monitoring ground fault current
Authenticating drivers with RFID cards
Receiving automated demand response signals from a utility or aggregator (Correct answer)
Exchanging certificates for Plug & Charge

Correct answer: Receiving automated demand response signals from a utility or aggregator

OpenADR is a standard for utilities to send demand response and price signals to loads such as EVSE.

Question 75: What is load balancing in a multi-port EV charging installation?

Evenly distributing vehicles across parking spaces
Distributing available electrical capacity across multiple chargers to prevent overloading the service (Correct answer)
Using multiple utility accounts for billing
Balancing the weight of charging cable routing

Correct answer: Distributing available electrical capacity across multiple chargers to prevent overloading the service

Load balancing distributes available electrical capacity among multiple EVSEs to prevent exceeding service capacity while maximizing charging availability.

Question 76: What is the proper wire pulling technique for EV conduit?

Apply lubricant, use proper equipment, respect tension limits, observe fill ratios (Correct answer)
Just push wire through
No technique needed
Use water as lubricant

Correct answer: Apply lubricant, use proper equipment, respect tension limits, observe fill ratios

Multiple techniques protect wire insulation during installation.

Question 77: What grounding requirements apply to EV charger installations?

Grounding is optional
Equipment grounding conductor, GFCI protection, and proper bonding per NEC (Correct answer)
No grounding needed
Only the charger needs grounding

Correct answer: Equipment grounding conductor, GFCI protection, and proper bonding per NEC

Multiple layers of grounding and fault protection are required.

Question 78: What is battery cell balancing?

Replacing damaged cells
Physically rearranging cells
Adding new cells
Equalizing charge levels among individual cells for optimal performance and safety (Correct answer)

Correct answer: Equalizing charge levels among individual cells for optimal performance and safety

Balancing ensures all cells in a pack operate at similar charge levels.

Question 79: An EVSE manufacturer specifies terminal torque values. Under NEC 110.14(D), how must the installer tighten these connections?

With an impact driver set to its lowest clutch setting
With an approved means such as a calibrated torque tool (Correct answer)
Only to the torque value printed on the breaker panel label
By hand until snug, then a quarter turn more

Correct answer: With an approved means such as a calibrated torque tool

NEC 110.14(D) requires an approved means, such as a calibrated torque tool, when a torque value is specified.

Question 80: Which policy approach helps to promote the widespread adoption of EV charging infrastructure?

Public-private partnerships (Correct answer)
Restrictions on conventional vehicles
Mandates for EV ownership
Fuel economy standards for gasoline vehicles

Correct answer: Public-private partnerships

Public-private partnerships are a highly effective policy approach because they combine government support (e.g., funding, regulatory frameworks) with private sector innovation and investment. This collaboration accelerates the deployment of charging infrastructure, leverages diverse expertise, and shares risks. Such partnerships lead to more robust and widespread adoption of EV charging solutions.

Question 81: Which pilot state indicates the vehicle requires ventilation during charging, such as for vented lead-acid batteries?

State F
State E
State B
State D (Correct answer)

Correct answer: State D

State D (+3 V) signals charging with ventilation required.

EVITP Electrical Vehicle Infrastructure Certification Exam

The EVITP Certification Exam validates electrician competency in EV charging standards, electrical safety codes, installation best practices, EV technology fundamentals, grid integration, infrastructure planning, and user accessibility.

Questions

90 min

Time Limit

70%

To Pass

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