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or (2) the rating of the fuel cell system(s) over current <br />protective device(s). <br /> <br />(C) Ampacity of Grounded or Neutral Conductor. If in- <br />teractive single-phase, 2-wire fuel cell output(s) is con- <br />nected to the grounded or neutral conductor and a single <br />ungrounded conductor of a 3-wire system or of a 3-phase, <br />4-wire wye-connected system, the maximum unbalanced <br />neutral load current plus the fuel cell system(s) output rat- <br />ing shall not exceed the ampacity of the grounded or neu- <br />tral conductor. <br /> <br />692.9 Over current Protection. <br /> <br />(A) Circuits and Equipment. If the fuel cell system is <br /> provided with over current protection sufficient to <br /> protect the circuit conductors that supply the load, <br /> additional circuit over current devices shall not be <br /> required. Equipment and conductors connected to <br /> more than one electrical source shall be protected. <br /> <br />(B) Accessibility. Over current devices shall be readily ac- <br />cessible. <br /> <br />692.10 Stand-Alone Systems. <br /> <br />The premises wiring system shall meet the requirements of <br />this Code except as modified by 692.10(A), (B), and (C). <br /> <br />(A) Fuel Cell System Output. The fuel cell system output <br />from a stand-alone system shall be permitted to supply ac <br />power to the building or structure disconnecting means at <br />current levels below the rating of that disconnecting means. <br /> <br />(B) Sizing and Protection. The circuit conductors between <br />the fuel cell system(s) output and the building or structure <br />disconnecting means shall be sized based on the output <br />rating of the fuel cell system(s). These conductors shall be <br />protected from over currents in accordance with 240.4. The <br />over current protection shall be located at the output of the <br />fuel cell system(s). <br /> <br />(C) Single 120-Volt Nominal Supply. The inverter output <br />of a stand-alone fuel cell system shall be permitted to sup- <br /> <br /> 89 <br /> <br /> <br />