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

1. A system's performance ratio (PR) is calculated as 0.85. If the array capacity is 10 kW and PSH is 5, what is the daily AC output?

A) 42.5 kWh
B) 50 kWh
C) 45 kWh
D) 40 kWh

2. A PV system's inverter displays a ground-fault error. What is the first troubleshooting step?

A) Inspect AC wiring
B) Replace the inverter
C) Check array insulation resistance
D) Verify DC disconnect operation

3. According to the NEC, where on a residential PV system MUST the labeling describing the type of rapid shutdown be located?

A) At point on the residence designated by the AKJ and fire marshal
B) A close as practicable to the PV array requiring rapid shutdown
C) On the rapid shutdown initiation device.
D) On or no more than 1 m (3. 3 ft) from the service disconnecting meant

4. What is an arc-flash boundary?

A) The distance within which qualified personnel can safely perform bare-handed work on exposed energized electrical equipment operating at 50 volts or more.
B) The approach limit distance within which inadvertent movement exposes personnel to increase ris due to electrical arc-over potential.
C) The approach limit distance from energized electrical equipment within which a person is considered to be exposed to full circuit voltage.
D) 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

5. On a PV system larger than 100kw, which PV array design will provide the HIGHEST degree of performance monitoring.
Granularity, and ease of troubleshooting performance issues?

A) Multiple-string inverter system with monitored dc-to-dc converters located at each module
B) Central inverter with data acquisition system located at the inverter.
C) Multiple-string inverter system with data acquisition system located at each inverter.
D) Multiple-string inverter system with data acquisition system located at each dc combiner

Solutions: