Edgeworth Borough, Allegheny County

"Marking is required on interior and exterior direct-current (DC) conduit, enclosures, raceways, cable assemblies, junction boxes, combiner boxes and disconnects. [a] The materials used for marking shall be reflective, weather resistant and suitable for the environment. Marking as required in Subsection G(7)(g)[2][b] through [d] below shall have all letters capitalized with a minimum height of 3/8 inch (9.5 millimeters), white on red background. [b] Marking content. The marking shall contain the words "WARNING: PHOTOVOLTAIC POWER SOURCE." [c] Main service disconnect. The marking shall be placed adjacent to the main service disconnect in a location clearly visible from the location where the disconnect is operated. [d] Location of marking. Marking shall be placed on interior and exterior DC conduit, raceways, enclosures and cable assemblies every 10 feet (3,048 millimeters), within one foot (305 millimeters) of turns or bends and within one foot (305 millimeters) above and below penetrations of roof/ceiling assemblies, walls or barriers."