EVITP CERTIFICATION
COMPREHENSIVE EXAM PREP
QUESTIONS AND ANSWERS
1. According to NEC Article 625.41, Electric Vehicle Supply Equipment (EVSE) must be
considered a continuous load. How should the overcurrent protective device be sized?
A. At 100% of the maximum load of the EVSE
B. At 115% of the maximum load of the EVSE
C. At 150% of the maximum load of the EVSE
D. At 125% of the maximum load of the EVSE
Answer: D
Conceptual Explanation: NEC 625.41 states that the overcurrent protective device for
EVSE must be sized for at least 125 percent of the maximum load, as it is defined as a
continuous load (3 hours or more).
2. Under NEC 625.42, what is required if an Automatic Load Management System (ALMS) is
used to control the total load on a service or feeder?
A. The maximum equipment load must be used for sizing all upstream components.
B. The ALMS must be permitted to reduce the load below the minimum circuit rating.
,C. ALMS systems are only permitted for residential installations.
D. The maximum load set by the ALMS shall be considered the maximum load for the
purpose of sizing conductors and overcurrent devices.
Answer: D
Conceptual Explanation: NEC 625.42 allows the maximum load permitted by an ALMS to
be used for sizing calculations, provided the system is listed and the setting is not easily
accessible to unauthorized personnel.
3. In the SAE J1772 standard for Level 2 charging, what does a Pulse Width Modulation
(PWM) duty cycle of 50% on the Control Pilot signal indicate to the vehicle?
A. The charging station is in a state of ‘Fault’.
B. A maximum current of 16 Amps is available.
C. A maximum current of 30 Amps is available.
D. Ventilation is required before charging can begin.
Answer: C
Conceptual Explanation: The J1772 standard uses PWM duty cycles to communicate
available amperage. A 50% duty cycle typically maps to 30 Amps (Duty Cycle % x 0.6 =
Amps, for specific ranges).
, 4. What is the maximum length permitted for the EV cable (output cable) under NEC
625.17(C) unless equipped with a cable management system?
A. 25 feet (7.5 meters)
B. 20 feet (6.0 meters)
C. 15 feet (4.5 meters)
D. 35 feet (10.5 meters)
Answer: A
Conceptual Explanation: NEC 625.17(C) limits the output cable length to 25 feet unless a
cable management system is installed to prevent the cable from lying on the ground.
5. When installing a Level 2 EVSE in a parking garage, what is the minimum mounting height
for the coupling means according to NEC 625.50 for indoor locations?
A. 12 inches above the floor
B. 36 inches above the floor
C. 24 inches above the floor
D. 18 inches above the floor
Answer: D
Conceptual Explanation: NEC 625.50 specifies that for indoor locations, the coupling
means must be stored or located at a height of not less than 18 inches above the floor level.
COMPREHENSIVE EXAM PREP
QUESTIONS AND ANSWERS
1. According to NEC Article 625.41, Electric Vehicle Supply Equipment (EVSE) must be
considered a continuous load. How should the overcurrent protective device be sized?
A. At 100% of the maximum load of the EVSE
B. At 115% of the maximum load of the EVSE
C. At 150% of the maximum load of the EVSE
D. At 125% of the maximum load of the EVSE
Answer: D
Conceptual Explanation: NEC 625.41 states that the overcurrent protective device for
EVSE must be sized for at least 125 percent of the maximum load, as it is defined as a
continuous load (3 hours or more).
2. Under NEC 625.42, what is required if an Automatic Load Management System (ALMS) is
used to control the total load on a service or feeder?
A. The maximum equipment load must be used for sizing all upstream components.
B. The ALMS must be permitted to reduce the load below the minimum circuit rating.
,C. ALMS systems are only permitted for residential installations.
D. The maximum load set by the ALMS shall be considered the maximum load for the
purpose of sizing conductors and overcurrent devices.
Answer: D
Conceptual Explanation: NEC 625.42 allows the maximum load permitted by an ALMS to
be used for sizing calculations, provided the system is listed and the setting is not easily
accessible to unauthorized personnel.
3. In the SAE J1772 standard for Level 2 charging, what does a Pulse Width Modulation
(PWM) duty cycle of 50% on the Control Pilot signal indicate to the vehicle?
A. The charging station is in a state of ‘Fault’.
B. A maximum current of 16 Amps is available.
C. A maximum current of 30 Amps is available.
D. Ventilation is required before charging can begin.
Answer: C
Conceptual Explanation: The J1772 standard uses PWM duty cycles to communicate
available amperage. A 50% duty cycle typically maps to 30 Amps (Duty Cycle % x 0.6 =
Amps, for specific ranges).
, 4. What is the maximum length permitted for the EV cable (output cable) under NEC
625.17(C) unless equipped with a cable management system?
A. 25 feet (7.5 meters)
B. 20 feet (6.0 meters)
C. 15 feet (4.5 meters)
D. 35 feet (10.5 meters)
Answer: A
Conceptual Explanation: NEC 625.17(C) limits the output cable length to 25 feet unless a
cable management system is installed to prevent the cable from lying on the ground.
5. When installing a Level 2 EVSE in a parking garage, what is the minimum mounting height
for the coupling means according to NEC 625.50 for indoor locations?
A. 12 inches above the floor
B. 36 inches above the floor
C. 24 inches above the floor
D. 18 inches above the floor
Answer: D
Conceptual Explanation: NEC 625.50 specifies that for indoor locations, the coupling
means must be stored or located at a height of not less than 18 inches above the floor level.
