EVT EVT Charging Systems & Infrastructure

Question 1

What SAE standard defines the Combined Charging System (CCS) connector used for DC fast charging in North America?

Accepted Answer

SAE J1772

Answer

SAE J2954

Answer

SAE J1171

Answer

SAE J1113

Question 2

A Level 2 EVSE operates at 240V AC and delivers up to 80A continuous. What is the maximum continuous output power in kilowatts?

Accepted Answer

19.2 kW

Answer

12.8 kW

Answer

7.2 kW

Answer

11.5 kW

Question 3

Which communication protocol does the CCS DC fast charger use to negotiate charging parameters with the vehicle?

Accepted Answer

ISO 15118 / DIN 70121

Answer

CAN bus

Answer

MODBUS RTU

Answer

J1850 VPW

Question 4

What is the purpose of the Control Pilot (CP) signal in an SAE J1772 charging circuit?

Accepted Answer

It communicates vehicle connection state and maximum available current to the EVSE

Answer

It measures the state of charge of the battery

Answer

It carries the AC power to the vehicle inlet

Answer

It monitors ground fault current

Question 5

A technician measures 0V on the Control Pilot line while the EV is plugged into a Level 2 EVSE. What does this most likely indicate?

Accepted Answer

EVSE is in a fault or not energized state

Answer

Normal state – vehicle is fully charged

Answer

Vehicle is actively drawing maximum charge current

Answer

Ground fault detected in the cable

Question 6

Which NEC article primarily governs the installation of electric vehicle supply equipment (EVSE) in the United States?

Accepted Answer

NEC Article 625

Answer

NEC Article 480

Answer

NEC Article 702

Answer

NEC Article 445