with Correct Detailed -Answer- s | Electric Vehicle
Installation Training Program Certification
EVITP Final Exam Practice Questions (1-10)
1. According to NEC Article 625, the conductors supplying Electric Vehicle Supply
Equipment (EVSE) must have an ampacity of at least what percentage of the
EVSE's maximum load?
A) 100%
B) 115%
C) 125%
D) 150%
-Answer- : C) 125%
Explanation: NEC 625.41 states that EVSE shall be considered a continuous load
for branch circuit and feeder calculations. Per the definition of a continuous load
(NEC Article 100) and requirements in 210.19(A)(1)(a), conductors must be sized
at 125% of the continuous load. This is one of the most fundamental and
frequently tested rules in EVITP.
2. When installing a Level 2 EVSE on a dedicated 40-amp circuit in a new
dwelling unit garage, what is the MINIMUM size THHN copper conductor
required in the raceway?
A) 8 AWG
B) 6 AWG
C) 4 AWG
D) 10 AWG
-Answer- : A) 8 AWG
*Explanation: A 40-amp circuit requires conductors sized for 125% of the load:
,40A x 1.25 = 50A. Referring to NEC Table 310.16, an 8 AWG copper conductor at
75°C (common termination rating) has an ampacity of 50A. 10 AWG is only rated
for 35A, and 6 AWG (65A) would be larger than the minimum required.*
3. A commercial installation plans for ten (10) identical Level 2 EVSE units. Each
unit has a nameplate rating of 32 amps at 208V. Using the demand factors in
Table 625.42, what is the calculated load for the feeder supplying all ten units?
A) 256 amps
B) 320 amps
C) 200 amps
D) 192 amps
-Answer- : D) 192 amps
*Explanation: First, the continuous load per unit is 32A x 1.25 = 40A. For 10 units,
the total connected load is 10 x 40A = 400A. Now apply the demand factor from
NEC Table 625.42 (not provided here but a must-know). For 10 units, the demand
factor is 48%. Therefore, 400A x 0.48 = 192A. This tests your ability to apply both
the continuous load rule AND the commercial demand factors correctly.*
4. Which of the following is NOT a required characteristic of an EV coupler
(connector) as specified in NEC 625.13?
A) It must be listed for the purpose.
B) It must be polarized.
C) It must have a "dead-front" design (no exposed pins when disconnected).
D) It must be capable of being locked in the connected position.
-Answer- : D) It must be capable of being locked in the connected position.
*Explanation: NEC 625.13(A) requires couplers to be listed, polarized, and have a
dead-front design. While some connectors may have a locking feature, it is not a
code-mandated characteristic. This is a classic "EXCEPT" question—read carefully.
Locking the disconnecting means is required, not necessarily the connector
itself.*
, 5. An EVSE is installed outdoors in a parking lot and is subject to physical
damage from vehicles. According to the NEC, what protective measure is
required?
A) Installation in an underground vault.
B) Guard posts or curbs meeting specific strength and location requirements.
C) A dedicated concrete island with warning signage.
D) Relocation to an area not subject to damage.
-Answer- : B) Guard posts or curbs meeting specific strength and location
requirements.
Explanation: NEC 625.42 specifically addresses overhead protection. Where
subject to severe physical damage, EVSE must be protected by guard posts or
similar means. The code references other sections (e.g., 110.27(B)) for specifics on
the construction of these guards. This is a direct code application question.
6. A PSW is installing EVSE in a public garage. The disconnecting means for the
EVSE must be:
A) Integral to the EVSE unit.
B) Within sight of and readily accessible to the EVSE.
C) Located at the main service panel only.
D) A Type HS fuse disconnect.
-Answer- : B) Within sight of and readily accessible to the EVSE.
Explanation: NEC 625.18 is clear: a disconnecting means for all ungrounded
conductors must be provided and shall be within sight of and readily accessible to
the EVSE. If not within sight, it must be capable of being locked in the open
position. Integral disconnects may satisfy this if they meet the definition.
7. What is the primary personnel protection system required for all receptacles
installed for EV charging?
A) An Equipment Grounding Conductor (EGC) sized per Table 250.122.
B) A Ground-Fault Circuit Interrupter (GFCI) of the Class A type.
C) An Isolation Transformer.
D) An Arc-Fault Circuit Interrupter (AFCI).