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NABCEP PV Installation Professional (PVIP) Board Certification Sample Questions:

1. An installer is terminating PV conductors in a combiner box. What is the minimum torque specification for a
10 AWG connection if not specified by the manufacturer?

A) 40 in-lb
B) 10 in-lb
C) 30 in-lb
D) 20 in-lb

2. A PV system's annual energy production is 15,000 kWh. After maintenance, production increases by 5%.
What is the new annual output?

A) 16,250 kWh
B) 15,500 kWh
C) 16,000 kWh
D) 15,750 kWh

3. Which of the following should a PV installer do during dc insulation resistance testing?

A) Remove surge suppression equipment from the circuit being tested.
B) Connect the megohmmeters's negative terminal to the dc circuit insulation
C) Wait until is raining and all wiring is damp to conduct the test.
D) Close ac and dc disconnects and have the system running for at least 5 minutes before testing.

4. According to the 2020 National Electrical Code (NEC), what is the minimum required working clearance in front of a 1000V DC PV inverter installed in a non-dwelling unit?

A) 36 inches wide, 48 inches deep
B) 30 inches wide, 36 inches deep
C) 48 inches wide, 48 inches deep
D) 36 inches wide, 36 inches deep

5. A PV system requires labeling per NEC 690.56. Which of the following must be posted at the point of interconnection?

A) "Warning: Dual Power Sources"
B) "Do Not Disconnect Under Load"
C) "PV System Disconnect"
D) "Maximum AC Voltage"

Solutions: