NABCEP NABCEP PV System Inspector

Question 1

What is the primary purpose of a PV system inspection conducted by an AHJ (Authority Having Jurisdiction)?

Accepted Answer

To confirm the installation complies with applicable codes, standards, and approved plans

Answer

AHJ inspections verify code compliance, safety, and conformance with the approved permit drawings before the system is authorized to operate.

Question 2

During a final PV system inspection, an inspector finds that the disconnect label reads 'AC Disconnect' but serves as both the AC disconnect and the rapid shutdown initiator. What should the inspector do?

Accepted Answer

Require correct labeling per NEC 690.13 and 690.12 identifying all functions of the disconnect

Answer

NEC requires clear, accurate labeling on all disconnecting means to ensure safety personnel understand each device's function; a device serving multiple roles must be labeled for all of them.

Question 3

An inspector observes PV modules installed on a roof without any visible rapid shutdown equipment. The system is on a building in a jurisdiction that has adopted NEC 2017 or later. Is this a code violation?

Accepted Answer

Yes, NEC 690.12 requires rapid shutdown for PV systems on buildings under NEC 2017 and later

Answer

NEC 690.12 (2017 and later) requires rapid shutdown for all PV systems installed on buildings, regardless of occupancy type, to protect emergency responders.

Question 4

What is the inspector's role when a PV system installation does not match the approved permit drawings?

Accepted Answer

Fail the inspection and require the installer to either correct the installation or submit revised drawings for approval

Answer

Any significant deviation from approved plans requires either correcting the installation or submitting revised plans for approval, because inspections are based on the approved documents.

Question 5

Which NEC code section governs the required markings and labels on PV system DC conduit and junction boxes?

Accepted Answer

NEC 690.31(G)

Answer

NEC 690.31(G) requires warning labels on all PV system DC conduit, raceways, cables, and enclosures exposed to the environment to warn of live DC conductors.

NABCEP - North American Board of Certified Energy Practitioners Practice Test

NABCEP - North American Board of Certified Energy Practitioners Practice Test

NABCEP NABCEP PV System Inspector