PV Electrical Review Bulleten 060817

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(2) Rated maximum power-point voltage (3) Maximum system voltage (4) Short-circuit current (5) Maximum rated output current of the charge controller (if installed) 9) Interactive System Point of Interconnection. All interactive system(s) points of interconnection with other sources shall be marked at an accessible location at the disconnecting means as a power source and with the rated ac output current and the nominal operating voltage. – NEC 690.54 10) Photovoltaic Power Systems Employing Energy Storage. Photovoltaic power systems employing energy storage shall also be marked with the maximum operating voltage, including any equalization voltage and the polarity of the grounded circuit conductor. – NEC 690.55 11) Identification of Power Sources – NEC 690.56 i) Facilities with Stand-Alone Systems – NEC 690.56(A). Any structure or building with a photovoltaic power system that is not connected to a utility service source and is a stand-alone systems shall have a permanent plaque or directory installed on the exterior of the building or structure at a readily visible location of the building or structure at a readily visible location acceptable to the authority having jurisdiction. The plaque or directory shall indicate the location of system disconnecting means and that the structure contains a stand-alone electrical power system. ii) Facilities with Utility Services and PV Systems – NEC 690.56(B). Buildings or structures with both utility service and a photovoltaic system shall have a permanent plaque or directory providing the location of the service disconnecting means and the photovoltaic system disconnecting means if not located at the same location. 12) Inverter Output Connection – NEC 690.64(7) WARNING INVERTER OUTPUT CONNECTION DO NOT RELOCATE THIS OVERCURRENT DEVICE C) Backfed Circuit Breakers 1) Suitable for backfeed. Circuit breakers, if backfed, shall be suitable for such operation. – NEC 690-64(B)(5) D) Equipment Locations 1) The location of all PV equipment shall be located in plan view, any roof mounted equipment shall be indicated as such. E) Equipment Specification Sheets 1) Provide all PV equipment specification sheets for verification of calculations. Brandon Pearsall Electrical Engineer, PE brandon.pearsall@hawaiicounty.gov Issued by: David Yamamoto, Building Division Chief County of Hawai`i is an Equal Opportunity Provider and Employer.