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NABCEP PVIP Exam Syllabus Topics:

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

1. Thermal imaging infrared cameras can be used to help find which of the following system operational issues?

A) Blind spot fault in a source circuit
B) Intensity of solar insolation to determine power output
C) Loose PV input circuit terminations in a combiner box
D) Battery state of charge in a multimode system

2. A AWG THWN-2 PV output conductors from two PV arrays are run in the same 3 in, conduit to their respective functionally grounded inverters in the building. The three PV source circuits are each protected by a 15A fuse in the combiner box at the array. The conduit, which is strapped directly to the roof, is exposed to design temperatures of 140' F (60' C) during its 30 ft.
Exposed run. What is the MAXIMUM current carrying capability value of the PV output conductors?

A) 61A
B) 42A
C) 54A
D) 34A

3. A microinverter system uses 30 modules, each rated at 320W, with an inverter efficiency of 96%. The AC output is connected to a 208V three-phase service. What is the total three-phase power output?

A) 8.8 kW
B) 9.6 kW
C) 10.0 kW
D) 9.2 kW

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

5. When installing an ungrounded PV system with an open-circuit voltage of 450Vdc and a maximum voltage of
3000Vdc which procedures should be followed to establish an electrically safe condition?

A) Mount inverters on nonconductive supports and temporarily ground one dc circuit conductor.
B) Determine possible sources electrical supply an avoid exposure to energized conductors or parts.
C) Verify that disconnecting device blades are closed and test conductors using an adequately rated detector.
D) Apply lockout/tagout devices and install a listed isolation transformer.

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