What PV safety labeling is required for my PV system?
Labels for solar industry are compulsory based on NEC 110 – 3 (A) respective NEC 90.3 and NFPA requirements(as NEC safety labels category). They have to withstand weather, they have to be placed visible and they have to mark the main installation components on DC side and on AC side. Special requirements are: they have to be UV protected and the ink has to be water proof. When using labels in photovoltaic projects we have to know how much we label. The requirements can be checked with local utility and we have to match all extra requirements of local fire department.