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

1. A dwelling has a 200A main load center with a 150 main breaker. Which of the following is the MOST powerful 240V inverter that can be installed in the house using the existing main panelboard with a backfed breaker?

A) 7, 689W
B) 9, 600W
C) 17, 280W
D) 21, 600W

2. Which of the following requires a UL listing or its equivalent?

A) Grounding electrode clamp
B) System labels and markings
C) System manuals
D) Lag screws

3. A PV module has a NOCT of 47°C. At 1000 W/m² and 35°C ambient, what is the cell temperature?

A) 63°C
B) 55°C
C) 47°C
D) 59°C

4. When running horizontal 1-1/4 in, electrical metallic tubing (EMT) with compression fittings, what is the MAXIMUM permissible distance between condult supports?

A) 20 ft
B) 10 ft
C) 14 ft
D) 3 ft

5. A bank of batteries with capability of supplying 250A and a maximum voltage of 325V is housed in a concrete structure in a very humid location. There is service access alsie between rows of batteries. What is the REQUIRED safety distance between the rows of batteries.

A) 3 ft. when insulted conducted conductors are used between terminals.
B) 3-1/2 If the building is equipped with a dehumidifier and the batteries are on insulting surfaces
C) 4 ft Whether or not the building is equipped with a dehumidifier or the batteries are insulting surfaces
D) 6 ft. When the floor is insulated and no dehumidifier is installed.

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