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NABCEP PVIP Exam Syllabus Topics:

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

1. The point-of-utility connection of a residential utility-interactive PV system is in the main distribution panel.
If the busbars of the main distribution panel are rated at 200A, and if the distribution panel has a 200A main breaker, the rated output current of the inverter cannot exceed.

A) 32A
B) 24A
C) 200A
D) 40A

2. A 10 kW PV system produces 8 kW AC under STC. After one year, output drops to 7.2 kW. What is the most likely maintenance issue?

A) Module degradation
B) Loose connections
C) Soiling on modules
D) Inverter inefficiency

3. 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) Apply lockout/tagout devices and install a listed isolation transformer.
C) Verify that disconnecting device blades are closed and test conductors using an adequately rated detector.
D) Determine possible sources electrical supply an avoid exposure to energized conductors or parts.

4. A PV system is designed for a location with a peak sun hours (PSH) value of 4.5. The daily load is 18 kWh, and the system efficiency is 80%. What is the minimum array size required in kW?

A) 7.5 kW
B) 5.0 kW
C) 6.0 kW
D) 4.0 kW

5. Which of the following is an NEC requirement regarding access for large-scale PV electric power production facilities?

A) Arc flash warning labels must be field-applied by the installer at all access points for qualified persons and at the point of the utility interconnection directory.
B) Field-applied hazard markings must be installed, and access to the supply station is to be restricted by fencing or other adequate means.
C) Access to remote isolating equipment for servicing is allowed for individual other than qualified persons when the equipment is enclosed within a secure structure.
D) All fencing and associated gates must have ac and dc current and voltage exposure labvels and must be electrically isolated from the solar facility.

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