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

1. A system's annual output decreases by 10% due to shading. The original output was 20,000 kWh. What is the new output?

A) 19,000 kWh
B) 20,000 kWh
C) 18,000 kWh
D) 16,000 kWh

2. A connector not listed to be used in a concealed location and being used as a disconnect for PV equipment shall comply with which of the following?

A) The connector shall have a non-polarized configuration.
B) The grounding member shall be interconnectchangeable with receptacles in other electrical systems.
C) The connector shall be installed so as to guard against inadvertent with live parts by persons.
D) The grounding member shall be last to make and first to break contact with the mating connector

3. A technician has been called to a scale due to a low-performing array. The technician will perform tests in the
24-source circuit combiner box. After putting on the correct PPE and turning off and performing lock.tagout of the inverted and combiner disconnect. Which is the next step to safely begin electrical testing in the combiner box?

A) Test for voltage on the positive out
B) Open all fuse holders in the combiner box.
C) Remove any surge suppression devices from the circuits.
D) Test for current on each source circuit coming into the combiner box.

4. 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) 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.
B) Rapid shutdown requirements within 1 ft of the array boundary.
C) 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.
D) Microinverters can be installed with either polycrystalline or monocrystalline modules, negating the need for rapid shutdown compliance.

5. A rooftop PV array has conductors running through a conduit exposed to sunlight on a roof with an ambient temperature of 40°C. The conduit is 2 inches above the roof surface. What is the NEC temperature adjustment factor for 90°C-rated conductors?

A) 1.00
B) 0.96
C) 0.91
D) 0.87

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