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

To verify the system meets financial payback projections

Answer

To test the system's maximum power output

Answer

To approve the utility billing rate

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

Accept it because it still functions correctly

Answer

Reject the entire installation

Answer

Require a separate disconnect for rapid shutdown only

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

No, rapid shutdown is optional for residential systems

Answer

No, if the inverter is outside the building

Answer

Yes, but only for commercial buildings over 3 stories

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

Approve if the system looks safe visually

Answer

Approve with a verbal warning only

Answer

Immediately condemn the entire building

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 690.4

Answer

NEC 690.12

Answer

NEC 705.12

Question 6

An inspector finds that PV module mounting hardware is not listed for the specific roof type (e.g., tile roof). What action is appropriate?

Accepted Answer

Fail the inspection and require listed hardware appropriate for the roof type

Answer

Approve if the modules appear structurally secure

Answer

Approve with a note in the file

Answer

Pass the structural portion and fail only the electrical portion