Re: [RE-wrenches] center fed main panel and 120% rule

e-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of August Goers Sent: Monday, October 15, 2012 12:38 PM To: RE-wrenches Subject: Re: [RE-wrenches] center fed main panel and 120% rule Kent, Brian, It still seems like a grey area to me. I th

Re: [RE-wrenches] center fed main panel and 120% rule

, 2012 12:07 PM *To:* RE-wrenches *Subject:* Re: [RE-wrenches] center fed main panel and 120% rule If you back feed at the end of the bus bar where the main is connected to the middle of the bus bar, the back fed breaker cannot overload the bus bar between the main and the back fed breaker,

Re: [RE-wrenches] center fed main panel and 120% rule

If you back feed at the end of the bus bar where the main is connected to the middle of the bus bar, the back fed breaker cannot overload the bus bar between the main and the back fed breaker, but it would be possible to overload the other side of the bus bar - it's being fed by both the main a

Re: [RE-wrenches] center fed main panel and 120% rule

Well the intent is so that no part of the bus bar is exposed to more than its stated rating. With the inverter breaker at the bottom and the main at the top there isn't any spot on the bus that is subject to the sum of the main and the inverter breaker currents. With a center fed panel, the secti

[RE-wrenches] center fed main panel and 120% rule

Hi Wrenches, Here is yet another 120% rule question as it relates to center fed main panels. 2011 NEC 705.12 deals with inverter point of connection and 705.12(D)(7) reads: "*Inverter Output Connection.* Unless the panelboard is rated not less than the sum of the ampere ratings of all overcur