ELECTRIC VEHICLE INFRASTRUCTURE TRAINING
PROGRAM (EVITP): 200 EXAM-STYLE QUESTIONS
WITH ANSWER KEYS & RATIONALES
1. What is the primary reason for using a GFCI in EVSE installations?
A) To prevent the EV battery from overcharging
B) To protect against electric shock by detecting ground faults
C) To reduce the voltage drop in the circuit
D) To increase the charging speed of the vehicle
Answer: B) GFCI protection is critical for safety as it detects imbalances between
the hot and neutral conductors, which indicates a ground fault. This prevents
severe electric shock to users, especially in wet or outdoor environments.
2. Which NEC article specifically addresses the installation of electric vehicle
charging equipment?
A) Article 690
B) Article 210
C) Article 625
D) Article 220
Answer: C) Article 625 of the National Electrical Code (NEC) is the dedicated
section that covers all requirements for electric vehicle charging systems,
including wiring methods, overcurrent protection, and disconnecting means.
3. According to the NEC, an EVSE is classified as what type of electrical load?
A) Intermittent load
B) Standby load
C) Non-continuous load
D) Continuous load
,Answer: D) EVSE is considered a continuous load because it operates at maximum
current for three hours or more. This classification requires the circuit to be sized
at 125% of the continuous load.
4. What is the maximum continuous current allowed for a Level 2 EVSE
connected to a 50-ampere circuit breaker?
A) 50 amps
B) 30 amps
C) 40 amps
D) 60 amps
Answer: C) For continuous loads, the circuit breaker must be sized at 125% of the
continuous current. Therefore, 40 amps is the maximum continuous draw (40A ×
125% = 50A breaker).
5. What NEMA rating is generally considered the minimum requirement for an
outdoor EVSE installation?
A) NEMA 3R
B) NEMA 1
C) NEMA 12
D) NEMA 4 or 4X
Answer: D) NEMA 4 or 4X enclosures provide watertight and corrosion-resistant
protection, making them suitable for outdoor environments where rain, snow, and
moisture ingress are primary safety concerns.
6. What does the acronym EVSE stand for?
A) Electric Vehicle System Electronics
B) Electric Vehicle Supply Equipment
C) Electric Vehicle Safety Equipment
D) Electric Vehicle Service Equipment
,Answer: B) EVSE stands for Electric Vehicle Supply Equipment, which is the
infrastructure that supplies electrical energy to recharge electric vehicles.
7. What is the typical voltage range for a Level 2 EV charging system?
A) 600-800 VDC
B) 100-120 VAC
C) 208-240 VAC
D) 380-480 VAC
Answer: C) Level 2 charging typically operates at 208–240 VAC, which is
commonly found in residential and commercial settings for faster charging than
Level 1.
8. Which component is responsible for converting DC power from the EV battery
into AC power for the electric motor?
A) Converter
B) Rectifier
C) Transformer
D) Inverter
Answer: D) The inverter converts high-voltage DC from the battery into three-
phase AC power to drive the electric motor. This is a critical component for vehicle
propulsion.
9. What is the function of the onboard charger in an electric vehicle?
A) To convert AC power from the EVSE to DC power for the battery
B) To monitor tire pressure and cabin temperature
C) To regulate the flow of coolant in the battery pack
D) To convert DC power from the battery to AC for the motor
Answer: A) The onboard charger takes the AC power supplied by the EVSE and
rectifies it to DC power to safely charge the high-voltage battery pack.
, 10. Which type of battery chemistry is most commonly found in modern electric
vehicles?
A) Nickel-metal hydride (NiMH)
B) Lead-acid
C) Lithium-ion (Li-ion)
D) Sodium-ion
Answer: C) Lithium-ion batteries are the standard for modern EVs due to their
high energy density, long cycle life, and relatively lightweight properties.
11. What is the maximum current capacity of the SAE J1772 connector standard?
A) 50 amps
B) 80 amps
C) 100 amps
D) 30 amps
Answer: B) The SAE J1772 AC connector is rated for up to 80 amps continuous
current, allowing for high-power Level 2 charging in residential and commercial
applications.
12. Which connector type is primarily used for DC fast charging in North
America?
A) CHAdeMO
B) SAE J1772
C) Tesla NACS
D) CCS (Combined Charging System)
Answer: D) CCS is the dominant DC fast-charging standard in North America,
combining the J1772 connector with two additional DC pins for high-speed
charging.
13. What is the typical power output range for a Level 3 DC fast charger?
A) 500-1000 kW
PROGRAM (EVITP): 200 EXAM-STYLE QUESTIONS
WITH ANSWER KEYS & RATIONALES
1. What is the primary reason for using a GFCI in EVSE installations?
A) To prevent the EV battery from overcharging
B) To protect against electric shock by detecting ground faults
C) To reduce the voltage drop in the circuit
D) To increase the charging speed of the vehicle
Answer: B) GFCI protection is critical for safety as it detects imbalances between
the hot and neutral conductors, which indicates a ground fault. This prevents
severe electric shock to users, especially in wet or outdoor environments.
2. Which NEC article specifically addresses the installation of electric vehicle
charging equipment?
A) Article 690
B) Article 210
C) Article 625
D) Article 220
Answer: C) Article 625 of the National Electrical Code (NEC) is the dedicated
section that covers all requirements for electric vehicle charging systems,
including wiring methods, overcurrent protection, and disconnecting means.
3. According to the NEC, an EVSE is classified as what type of electrical load?
A) Intermittent load
B) Standby load
C) Non-continuous load
D) Continuous load
,Answer: D) EVSE is considered a continuous load because it operates at maximum
current for three hours or more. This classification requires the circuit to be sized
at 125% of the continuous load.
4. What is the maximum continuous current allowed for a Level 2 EVSE
connected to a 50-ampere circuit breaker?
A) 50 amps
B) 30 amps
C) 40 amps
D) 60 amps
Answer: C) For continuous loads, the circuit breaker must be sized at 125% of the
continuous current. Therefore, 40 amps is the maximum continuous draw (40A ×
125% = 50A breaker).
5. What NEMA rating is generally considered the minimum requirement for an
outdoor EVSE installation?
A) NEMA 3R
B) NEMA 1
C) NEMA 12
D) NEMA 4 or 4X
Answer: D) NEMA 4 or 4X enclosures provide watertight and corrosion-resistant
protection, making them suitable for outdoor environments where rain, snow, and
moisture ingress are primary safety concerns.
6. What does the acronym EVSE stand for?
A) Electric Vehicle System Electronics
B) Electric Vehicle Supply Equipment
C) Electric Vehicle Safety Equipment
D) Electric Vehicle Service Equipment
,Answer: B) EVSE stands for Electric Vehicle Supply Equipment, which is the
infrastructure that supplies electrical energy to recharge electric vehicles.
7. What is the typical voltage range for a Level 2 EV charging system?
A) 600-800 VDC
B) 100-120 VAC
C) 208-240 VAC
D) 380-480 VAC
Answer: C) Level 2 charging typically operates at 208–240 VAC, which is
commonly found in residential and commercial settings for faster charging than
Level 1.
8. Which component is responsible for converting DC power from the EV battery
into AC power for the electric motor?
A) Converter
B) Rectifier
C) Transformer
D) Inverter
Answer: D) The inverter converts high-voltage DC from the battery into three-
phase AC power to drive the electric motor. This is a critical component for vehicle
propulsion.
9. What is the function of the onboard charger in an electric vehicle?
A) To convert AC power from the EVSE to DC power for the battery
B) To monitor tire pressure and cabin temperature
C) To regulate the flow of coolant in the battery pack
D) To convert DC power from the battery to AC for the motor
Answer: A) The onboard charger takes the AC power supplied by the EVSE and
rectifies it to DC power to safely charge the high-voltage battery pack.
, 10. Which type of battery chemistry is most commonly found in modern electric
vehicles?
A) Nickel-metal hydride (NiMH)
B) Lead-acid
C) Lithium-ion (Li-ion)
D) Sodium-ion
Answer: C) Lithium-ion batteries are the standard for modern EVs due to their
high energy density, long cycle life, and relatively lightweight properties.
11. What is the maximum current capacity of the SAE J1772 connector standard?
A) 50 amps
B) 80 amps
C) 100 amps
D) 30 amps
Answer: B) The SAE J1772 AC connector is rated for up to 80 amps continuous
current, allowing for high-power Level 2 charging in residential and commercial
applications.
12. Which connector type is primarily used for DC fast charging in North
America?
A) CHAdeMO
B) SAE J1772
C) Tesla NACS
D) CCS (Combined Charging System)
Answer: D) CCS is the dominant DC fast-charging standard in North America,
combining the J1772 connector with two additional DC pins for high-speed
charging.
13. What is the typical power output range for a Level 3 DC fast charger?
A) 500-1000 kW
