Inspections of solar panel farm by two people

Failing an Inspection: Solar Photovoltaic (PV) Systems

Helpful information for residential and commercial inspections.

This page provides a list of typical rejections we often see during the building and electrical rough-in and/or final inspection for a Solar PV Systems project. This checklist can help serve contractors and subcontractors to minimize re-inspections and to complete a project in a timely manner.

  1. NEC 110.9: the AIC rating does not match the breaker interrupting rating
  2. NEC 110.12 (A): unused openings shall be closed for protection.
  3. NEC 110.14: electrical connectors and conductors shall not be of dissimilar materials.
  4. NEC 110.14 (A): connection of conductors to terminals shall be properly torqued.
  5. NEC 110.26: maintain minimum working distance per Table 110.26 (A) (1).
  6. NEC 250.8 Equipment grounding conductors, equipment grounding bars, and lugs to be fastened to the enclosure with machine thread screw-type fasteners.
  7. Plans and photos onsite for the inspector.
  8. NCDOI: Required photos not complete, don’t show all required items, and not uploaded into EnerGov.
  9. NEC 408.4: circuits shall be legibly identified and be able to withstand the environment installed.
  10. NEC 250.4 (A) (3): conductive materials such as array frames and array mounting metal that may become energized shall be bonded together.
  11. NEC 690.47 (G)(4): labels are to be visible, reflective, letters shall be 3/8 in., white on red, and suitable for the environment when required.
  12. Access to inside components, wiring, panels, etc. like in the attic, garage, and crawl space.
  13. NCDOI: missing information on the Design Professional Appendix G when submitted by a third party.
  14. Missing fall protection when required by the applicable codes.
  15. Egress is not identified when roofs are publicly occupied.

Contact

 

Planning and Development
Customer Service Center
Customer Request Form
919-996-2500

Department:
Planning and Development
Service Categories:
Inspections
Related Services:
Residential Solar Photovoltaic (PV) SystemCommercial Solar Photovoltaic (PV) System

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