NEC 2017 690.54 Interactive System Point of Interconnection
NEC 690.54 requires that every interactive PV system interconnection point with other sources is labeled at an accessible disconnecting means. The label must state that it's a power source and display the rated AC output current, and nominal AC operating voltage.
This clear marking helps technicians, inspectors, and emergency responders safely identify, verify, and manage all interconnection points for system isolation and maintenance.
