NEC 705.10 requires that a(n) that indicates all interconnected power sources for the premises be installed at the service and the location(s) of the power production source(s).

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NEC 705.10 requires a permanent plaque or directory to be installed at the service location that indicates all interconnected power sources for the premises, including the location(s) of the power production source(s) such as generators or solar panels. This ensures that anyone who needs to work on the electrical system can easily identify all power sources and take appropriate safety precautions. Removable labels and instruction sheets may be useful for temporary or specific situations, but they are not sufficient for meeting the requirements of NEC 705.10. Signs may also be useful for indicating specific hazards or instructions, but they are not appropriate for providing a comprehensive listing of all interconnected power sources.

NEC 70510 Requires That A(n) That Indicates All Interconnected Power Sources