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

1. When running horizontal 1-1/4 in, electrical metallic tubing (EMT) with compression fittings, what is the MAXIMUM permissible distance between condult supports?

A) 10 ft
B) 14 ft
C) 20 ft
D) 3 ft

2. 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) On the rapid shutdown initiation device.
C) On or no more than 1 m (3. 3 ft) from the service disconnecting meant
D) A close as practicable to the PV array requiring rapid shutdown

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. Which of the following should a PV installer do during dc insulation resistance testing?

A) Connect the megohmmeters's negative terminal to the dc circuit insulation
B) Close ac and dc disconnects and have the system running for at least 5 minutes before testing.
C) Remove surge suppression equipment from the circuit being tested.
D) Wait until is raining and all wiring is damp to conduct the test.

5. In the middle of a winter day, the data acquisition system for a ground-mounted PV system with large central inverters sends an email alert that system performance is at 50% based on irradiance and temperature performance calculations. No inverters are completely offline. The closed technician is a 4-hour drive from the site, and there are no cameras on site. Which is the BEST response to this situation?

A) Review power output and weather conditions via the monitoring portal, and review local weather reports.
B) Call the data acquisition company to report a monitoring system failure.
C) Dispatch the technician to the site t investigate the low performance issue in person.
D) Report the low performance to theinverter manufacturer and request that a technical be sent to the site for a warranty claim.

Solutions:

Question # 1 Answer: A

Question # 2 Answer: B

Question # 3 Answer: B

Question # 4 Answer: A

Question # 5 Answer: A