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Any supplementary grounding electrode(s) required by the <br />manufacturer shall be connected to the equipment- <br />grounding conductor specified in 250.118. <br /> <br />VI. Marking <br /> <br />692.53 Fuel Cell Power Sources. <br /> <br />A marking specifying the fuel cell system, output voltage, <br />output power rating, and continuous output current rating <br />shall be provided at the disconnecting means for the fuel <br />cell power source at an accessible location on the site. <br /> <br />692.54 Fuel Shut-Off. <br /> <br />The location of the manual fuel shut-offvalve shall be at <br />the location of the primary disconnecting means of the <br />building or circuits supplied. 692.56 Stored Energy. A fuel <br />cell system that stores electrical energy shall require the <br />following warning sign, or equivalent, at the location of the <br />service disconnecting means of the premises: <br /> <br /> WARNING <br />FUEL CELL POWER SYSTEM CONTAINS <br />ELECTRICAL ENERGY STORAGE DEVICES. <br /> <br />VII. Connection to Other Circuits <br /> <br />692.59 Transfer Switch. <br /> <br />A transfer switch shall be required in non-grid-interactive <br />systems that use utility grid backup. The transfer switch <br />shall maintain isolation between the electrical production <br />and distribution network and the fuel cell system. The <br />transfer switch shall be permitted to be located externally or <br />internally to the fuel cell system unit. When the utility <br />service conductors of the structure are connected to the <br />transfer switch, the switch shall comply with Article 230, <br />Part V <br /> <br />692.60 Identified Interactive Equipment. <br /> <br />Only fuel cell systems listed and identified as interactive <br />shall be permitted in interactive systems. <br /> <br /> 92 <br /> <br /> <br />