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Carl, The AHJ is mistaken. It's the same logic that is used to defend the point that the inverter breaker doesn't need a backfeed clip. The inverter is considered a load, not a source, because it cannot produce voltage or current when the grid is off per UL 1741, just as a traditional load can't. Allan Sindelar Darryl Thayer wrote: You are absolutly correct, and the code does say the fuses shall be dead when the switch is off. I have not had that AHJ problem yet, but I expect it. Darryl--- On Wed, 1/13/10, Carl Adams <[email protected]> wrote:From: Carl Adams <[email protected]> Subject: [RE-wrenches] Load or Line Side was Solar accumulation panel To: "RE-wrenches" <[email protected]> Date: Wednesday, January 13, 2010, 7:17 PM Wrenches, I just had an AHJ require me to switch the load and line connections on the fused AC disconnect which sits between the inverters (AC Combiner panel) and the point of utility connection. The inverter was connected on the LOAD side of the fused disconnect, and while the AHJ agreed this was the safest configuration, (when the disco is OFF the fuses are safe to remove) he insisted that the PV array should be connected to the LINE side of the disconnect since it is supplying power rather than acting as a LOAD. Any similar experience or arguments I can make based on the NEC which might help change the position of the AHJ next time round? I still believe our initial installation represents the safest configuration. Carl Adams SunRock Solar, LLC _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org |
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