Dave, Looking at 2014, NEC 250.24(B) FPN and exhibits tends to imply bonding at first means of disconnect. This also minimizes potential ground loops. Best regards, Lloyd Hoffstatter Sunstruck Consulting
Get Outlook for iOS<https://aka.ms/o0ukef> ________________________________ From: RE-wrenches <[email protected]> on behalf of Dave Tedeyan <[email protected]> Sent: Thursday, October 29, 2020 9:56:47 AM To: RE-wrenches <[email protected]> Subject: [RE-wrenches] unfused disconnect before service disconnect I'm looking to the hive mind here to see if others can weigh in on an issue I am having with an inspector. Grid tied PV system, with a line side tap in an automatic transfer switch. There is an outdoor utility required system disconnect right next to the transfer switch. But there was not enough physical space to get something that was service rated with overcurrent protection. So we installed a QO200TR, which is a tiny switch that looks like a circuit breaker, is rated at 60A, but does not actually have overcurrent protection. Then just inside the basement is the service disconnect with the neutral ground bond, etc. The inspector is telling me to bond the neutral and ground in the outdoor unfused disconnect, and remove it in the disconnect in the basement. I am having trouble finding a code reference. Does anyone know of one showing that the unfused disconnect is not the service point even though it comes first? Or is this not something that is allowed? We are on NEC 2017 here in NY.. . Thanks! -Dave Dave Tedeyan, PE Senior Engineer | Taitem Engineering, PC [https://www.taitem.com/signatures/logo.png] 110 South Albany Street | Ithaca, NY 14850 o. 607.277.1118 x121 f. 607.277.2119 www.taitem.com<http://www.taitem.com> Solar • Sustainability • Energy • Design Certified B-Corporation since 2013
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