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<blockquote data-quote="Phil Graham" data-source="post: 90797" data-attributes="member: 430">Re: NEC 2013 Draft, OSHA, and Generators - Details and Discussion (long)TJ,I&#039;m tacitly assuming that there is some current path to the inverter, though in truth I don&#039;t know what it is. Perhaps it through a diode pair attached between the inverter and the frame? If the frame is truly floating, there won&#039;t be current flow to it, as you say. If no current is flowing into the generator frame because of a fully floating ground, then overcurrent protection of the generator is being still achieved, as (essentially) no current flows into the high impedance of the frame, but of course the short to the frame now causes it to float at the generator line potential.I&#039;m going to ask a local generator house that has lots of experience with these about it, and I&#039;ll clarify the assumed fault current path in the original post for future readers.</blockquote>

[QUOTE="Phil Graham, post: 90797, member: 430"] Re: NEC 2013 Draft, OSHA, and Generators - Details and Discussion (long) TJ, I'm tacitly assuming that there is some current path to the inverter, though in truth I don't know what it is. Perhaps it through a diode pair attached between the inverter and the frame? If the frame is truly floating, there won't be current flow to it, as you say. If no current is flowing into the generator frame because of a fully floating ground, then overcurrent protection of the generator is being still achieved, as (essentially) no current flows into the high impedance of the frame, but of course the short to the frame now causes it to float at the generator line potential. I'm going to ask a local generator house that has lots of experience with these about it, and I'll clarify the assumed fault current path in the original post for future readers. [/QUOTE]

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