Certified EVSE Installer Licensing Exam
Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. Which type of EVSE typically provides the fastest charging for
electric vehicles?
A. Level 1
B. Level 2
C. DC Fast Charger
D. Portable Charger
DC Fast Chargers supply high-voltage direct current, allowing
vehicles to charge much faster than Level 1 or Level 2 AC chargers.
2. What is the standard voltage for a Level 2 residential EVSE in
North America?
A. 120 V
B. 240 V
C. 480 V
D. 600 V
Level 2 chargers use 240 V AC, which provides faster charging than
the 120 V used by Level 1 chargers.
3. Which organization sets safety standards for electrical
installations in the United States?
A. OSHA
B. IEEE
C. NFPA (National Fire Protection Association)
, D. NEMA
The NFPA publishes the National Electrical Code (NEC), which
defines safe electrical installation practices.
4. Ground Fault Circuit Interrupters (GFCIs) are required for which
type of EVSE installation?
A. Outdoor installations only
B. Commercial installations only
C. Both indoor and outdoor installations where a risk of
moisture exists
D. No EVSE requires GFCIs
GFCIs protect against electric shock in wet environments, which is
critical for both indoor and outdoor charging locations.
5. What is the primary function of an EVSE?
A. To store electricity in the vehicle
B. To safely deliver electricity to the electric vehicle
C. To convert DC to AC in the EV battery
D. To provide Wi-Fi connectivity
EVSE regulates voltage, current, and communication with the EV
to ensure safe and efficient charging.
6. When installing an EVSE outdoors, what type of enclosure rating is
recommended?
A. IP20
B. IP30
C. IP44
D. NEMA 3R or higher
Outdoor installations require enclosures rated to withstand rain,
snow, and dust; NEMA 3R ensures this level of protection.
7. Which component protects an EVSE from overcurrent?
A. GFCI
, B. Transformer
C. Circuit breaker
D. Contactor
A circuit breaker interrupts the flow of electricity when current
exceeds safe levels, protecting both the EVSE and wiring.
8. How does a pilot signal function in Level 2 charging?
A. Controls battery temperature
B. Communicates maximum current the EVSE can supply to the
EV
C. Provides voltage conversion
D. Charges the vehicle wirelessly
The pilot signal allows the EV and EVSE to negotiate charging
current to prevent overload and ensure safe charging.
9. What is the maximum current commonly provided by a typical
residential Level 2 EVSE?
A. 16 A
B. 24 A
C. 32 A
D. 50 A
Most Level 2 residential chargers provide up to 32 A at 240 V,
giving 7.6 kW of power for faster charging.
10. Which wire color is typically used for grounding in the U.S.?
A. Black
B. Red
C. Blue
D. Green or bare copper
Ground wires are green or bare to clearly distinguish them from
hot (live) or neutral wires for safety.
Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. Which type of EVSE typically provides the fastest charging for
electric vehicles?
A. Level 1
B. Level 2
C. DC Fast Charger
D. Portable Charger
DC Fast Chargers supply high-voltage direct current, allowing
vehicles to charge much faster than Level 1 or Level 2 AC chargers.
2. What is the standard voltage for a Level 2 residential EVSE in
North America?
A. 120 V
B. 240 V
C. 480 V
D. 600 V
Level 2 chargers use 240 V AC, which provides faster charging than
the 120 V used by Level 1 chargers.
3. Which organization sets safety standards for electrical
installations in the United States?
A. OSHA
B. IEEE
C. NFPA (National Fire Protection Association)
, D. NEMA
The NFPA publishes the National Electrical Code (NEC), which
defines safe electrical installation practices.
4. Ground Fault Circuit Interrupters (GFCIs) are required for which
type of EVSE installation?
A. Outdoor installations only
B. Commercial installations only
C. Both indoor and outdoor installations where a risk of
moisture exists
D. No EVSE requires GFCIs
GFCIs protect against electric shock in wet environments, which is
critical for both indoor and outdoor charging locations.
5. What is the primary function of an EVSE?
A. To store electricity in the vehicle
B. To safely deliver electricity to the electric vehicle
C. To convert DC to AC in the EV battery
D. To provide Wi-Fi connectivity
EVSE regulates voltage, current, and communication with the EV
to ensure safe and efficient charging.
6. When installing an EVSE outdoors, what type of enclosure rating is
recommended?
A. IP20
B. IP30
C. IP44
D. NEMA 3R or higher
Outdoor installations require enclosures rated to withstand rain,
snow, and dust; NEMA 3R ensures this level of protection.
7. Which component protects an EVSE from overcurrent?
A. GFCI
, B. Transformer
C. Circuit breaker
D. Contactor
A circuit breaker interrupts the flow of electricity when current
exceeds safe levels, protecting both the EVSE and wiring.
8. How does a pilot signal function in Level 2 charging?
A. Controls battery temperature
B. Communicates maximum current the EVSE can supply to the
EV
C. Provides voltage conversion
D. Charges the vehicle wirelessly
The pilot signal allows the EV and EVSE to negotiate charging
current to prevent overload and ensure safe charging.
9. What is the maximum current commonly provided by a typical
residential Level 2 EVSE?
A. 16 A
B. 24 A
C. 32 A
D. 50 A
Most Level 2 residential chargers provide up to 32 A at 240 V,
giving 7.6 kW of power for faster charging.
10. Which wire color is typically used for grounding in the U.S.?
A. Black
B. Red
C. Blue
D. Green or bare copper
Ground wires are green or bare to clearly distinguish them from
hot (live) or neutral wires for safety.
