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

1. Which of the following voltages should be included on the dc disconnected label to indicate MAXIMUM system voltage?

A) Non-temperature-corrected V
B) 600 V
C) Temperature-corrected V
D) Source circuit V

2. What is an arc-flash boundary?

A) The approach limit distance within which a person could receive a second-degree burn in the event that an electrical arc flash were to occur
B) The approach limit distance from energized electrical equipment within which a person is considered to be exposed to full circuit voltage.
C) The approach limit distance within which inadvertent movement exposes personnel to increase ris due to electrical arc-over potential.
D) The distance within which qualified personnel can safely perform bare-handed work on exposed energized electrical equipment operating at 50 volts or more.

3. Inspection of a new PV installation shows that the dwelling uses a galvanized water pipe for its grounding electrode and that the PV system now shares the connection. Which of the following is an acceptable supplemental electrode method to ensure the integrity of having a grounding electrode?

A) Connecting the service panel to an auxiliary ground used by a lightning protection system
B) Connecting the water pipe to the service entrance panel metal structure
C) Connection the service panel to a copper-clad steel ground rod near the panel
D) Connecting the water pipe to a gas pipe that is known to be solidly grounded

4. A grid-interactive PV system with battery backup is being installed with a ground-mounted PV array located
200 ft, from the inverter and batteries. The dc PV output circuit has overcuit has overcurrent protection rated from 30A. To reduce voltage drop between the array and batteries, the output circuit wire size was determined to be 6 AWG. The fused dc disconnect between the inverted and batteries is rated for 300A. What is the required size of the equipment grounding conductor between the metal battery case and the inverter?

A) 6 AWG
B) 4 AWG
C) 8 AWG
D) 10 AWG

5. A 1. 100 ft, 2 ranch home with cathedralcallingshas a 14 ft. x 41 ft. 8 in , south-facing , composite shingle roof. An engineer has determined that the home's 2 in, x 6 in. on-center roof rafters are strong enough to gold a solar electric system. The system will have 62.25 in. x 32.50 in. modules with a 1-in gap between modules and a standard twin-rillmounting system number of modules that can fit on the roof on under these conditions?

A) 35 modules in landscape
B) 30 modules in portrait
C) 40 modules in landscape
D) 28 modules in portrait

Solutions: