The National Electrical Code requires all PV systems to have special labeling and signage. However, the specific signage may vary based on specific local building codes, special zoning bylaws and/or city ordinances.

All systems should have operational and shutdown signage, although it may look different depending on the jurisdiction. Do not expect control and hazard identification labeling to be consistent across systems.

Check with the building owner, installation contractor or property manager to learn about specific characteristics of a single PV system. Ask a building department official about the signage required in your area. Solar system contractors also have expertise in this subject.