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

1. 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) 5.0 kW
B) 4.0 kW
C) 6.0 kW
D) 7.5 kW

2. A homeowner is weighing the PV module options for a roof-mounted solar array. Which is a correct option to present to the homeowner?

A) Building-integrated PV shingles will be flush or nearly flush with other shingles, but the electrical energy produced will be less than polycrystalline or monocrystalline modules.
B) Polycrystalline modules are more shade-tolerance than either amorphous or monocrystalline modules and allow a larger array to be installed, including in area where shading could be seasonally problematic.
C) Rapid shutdown requirements within 1 ft of the array boundary.
D) Microinverters can be installed with either polycrystalline or monocrystalline modules, negating the need for rapid shutdown compliance.

3. The NEC requires that PV systems installed on dwellings incorporate which of the following components?

A) Dc lightning surge arrestors
B) Blocking diodes across each module
C) A lockable utility disconnect at the point-of-utility interconnection
D) A dc ground-fault protect device

4. 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) 200A
B) 40A
C) 32A
D) 24A

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

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

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