Re: [RE-wrenches] load side taps and NEC 240.21

Much Egg On My Own Face as Usual. Of couse I was refering to 2005 not 2008. 2008, 2005, 2011, who is counting. Well actually I guess in California folks are using 2008 California which references 2005 NECso, where is the job? Or does it really matter since it all comes down to the decretion

Re: [RE-wrenches] load side taps and NEC 240.21

Jerry, As pointed out below, this is a load-side bus connection. It would follow the 120% rule if using the 2008 NEC. Since the guy is buddies with the inspector that should be no problem. However, you must follow the 2008 NEC if you want to apply it (tap must be at the opposite end of the bus

Re: [RE-wrenches] load side taps and NEC 240.21

Hi Mark, Did you mean 2005 NEC? The language in the 2008 NEC, 690.64(B)(2) doesn't differentiate between dwelling units and other cases, by my reading. The same intent seems to be repeated in 705.12(D)(2). Or perhaps I am missing something here... Best, Louis Woofenden Mark Frye wrote: 12

Re: [RE-wrenches] load side taps and NEC 240.21

The 2008 NEC broaden this 120% allowance to include commercial facilities. There are some additional requirements to be aware of in order to use the 120% allowance. On 12/5/08 7:10 PM, "Mark Frye" <[EMAIL PROTECTED]> wrote: > 120% allowance is only "..For a dwelling unit". > > Clearly this

Re: [RE-wrenches] load side taps and NEC 240.21

Mark, Wait a minute...I may be wrong here, as I have become the "graybeard guy who handles off-grid and weird stuff" at Positive Energy, but I think the 2008 Code allows 120% for commercial, not just residential, as long as it is fed at the bottom of the bussbar. 2011 NEC is trying to make it a bit

Re: [RE-wrenches] load side taps and NEC 240.21

"Dwelling Unit. A single unit, providing complete and independent living facilities for one or more persons, including permanent provisions for living, sleeping, cooking, and sanitation." Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024

Re: [RE-wrenches] load side taps and NEC 240.21

120% allowance is only "..For a dwelling unit". Clearly this is a load side Point of Connection. If it is a "dwelling unit"" then the 120% allowance is applicable. If it is not a "dwelling unit", then there is no room to connect under NEC 2008. Mark Frye Berkeley Solar Electric Systems 30

Re: [RE-wrenches] load side taps and NEC 240.21

Jerry - A line tap typically occurs between the utility meter and the main breaker - not after the main breaker on the load side. It seems that you are describing a load side tap which follows the 120% rule under 2008 NEC; I might be misunderstanding the situation. Please clarify. There are few

Re: [RE-wrenches] load side taps and NEC 240.21

Jerry: At a recent John Wiles seminar, John declared that this scenario is not a tap and is therefore not covered under the tap rule. This was news to me, but Wiles is considered some sort of guru in compliance discussions. William Miller At 03:43 PM 12/5/2008, you wrote: Wreches, I ha

[RE-wrenches] load side taps and NEC 240.21

Wreches, I have a system where we are tapping onto the bus bars of a 1200 amp panel fed by a 1200 amp main breaker. The easy place to tap onto the bus bars is the load side of the breaker using the existing bolts. The inverter and utility fused disco are about 200 ft away, and the tap conduc

Re: [RE-wrenches] Square D 225A load center

I think that the calculation goes as follows: (1) For residential PV systems, the bus can fed at 120% of its rated value: 1.2*225A=270A (2) The main breaker limits the feed from the utility to 200A (3) This leaves 70A for the PV system - Peter Peter T. Parrish, Ph.D., President Califo