Re: [RE-wrenches] NEC 705.12 Point of Connection - 120% rule for center-fed panelboards

This is a link to John Wiles article on NEC2014 for this topic. To my knowledge, no one has adopted NEC2017, so it would seem that this article is appropriate for the most recent NEC published. As noted AHJs can allow exceptions, and it is great that new language is now approved for NEC2017, bu

Re: [RE-wrenches] NEC 705.12 Point of Connection - 120% rule for center-fed panelboards

Bill, Could you please provide an example of this showing calculations? Thanks so much, Phil From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of billbroo...@sbcglobal.net Sent: Wednesday, March 2, 2016 11:24 AM To: 'RE-wrenches' Subject: Re: [RE-wrenches] NEC

Re: [RE-wrenches] NEC 705.12 Point of Connection - 120% rule for center-fed panelboards

Phil, I think you already understand how to apply the “120% rule.” All this is saying is that the breaker can go at either end of a center-fed panel for dwellings. Do you understand now? To summarize—a 200A center-fed panel would allow a 40-amp PV breaker to be installed at either end to

Re: [RE-wrenches] LG neon 365 watt 72 cell modules, who sells them

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Re: [RE-wrenches] NEC 705.12 Point of Connection - 120% rule for center-fed panelboards

Bill, Did I understand your earlier post to infer that there never was an intent to apply the "opposite end of the buss" rule to the 120% backfeed allowance in residential applications? And that you have been working to rewrite a solar backfeed breaker in a residential setting to land anywhere on

[RE-wrenches] Schneider Conext Battery Monitor

I have recently installed my first Conext SW4024 and I am so far general impressed, particularly compared to earlier Xantrex products. I am now installing the battery monitor and am trying to decide on location. It is replacing an old TM500 meter which was part of the old Trace SW4024 power panel i

Re: [RE-wrenches] NEC 705.12 Point of Connection - 120% rule for center-fed panelboards

Chris, While John’s article may seem like a logical interpretation of the 2014 NEC, if you lived in the western half of the United States where these panels are common, you would have a very different view of his choice of articles. His article sites a technicality that is not a safety co

Re: [RE-wrenches] NEC 705.12 Point of Connection - 120% rule for center-fed panelboards

Howie, To clarify what the 2017 NEC states, it allows for either end of the bus. There is some value to having loads in between the PV breaker and the main breaker. Also, by putting the PV breaker as far away from the main as possible, the heat of both breakers are likely to affect each othe

Re: [RE-wrenches] NEC 705.12 Point of Connection - 120% rule for center-fed panelboards

Thanks Bill, I got it. From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of billbroo...@sbcglobal.net Sent: Thursday, March 3, 2016 9:07 AM To: 'RE-wrenches' Subject: Re: [RE-wrenches] NEC 705.12 Point of Connection - 120% rule for center-fed panelboards Phil