[RE-wrenches] backfeeding "six disconnect" panel

Jason Szumlanski Jason at fafcosolar.com
Thu Oct 28 17:29:36 PDT 2010


Two options: 

1. Avoid (B), use (A), do a supply side tap. 
2. Replace panel (probably a good idea to talk customer into this anyway).

Jason Szumlanski
Fafco Solar

On Oct 28, 2010, at 8:20 PM, "Dana Brandt" <dana at ecotechenergy.com> wrote:

> Hi everyone,
> 
> I'm working on two systems for homes that have the old style breaker panels with no single main breaker. Instead, they have six breakers in the upper part of the panel each labeled "main breaker," which satisfies the six disconnect rule. The bus bar is split, with one of the six upper breakers (60A) feeding a separate bus in the lower half of the panel. It appears that the upper bus is rated for 200A, and the lower at 100A.  The sum of the main breakers does not exceed the 200A rating of the upper bus. There are spare breaker slots on both the top and bottom buses. How do I deal with 690.64 (B) (2) when there's no main breaker? 
> 
> Thanks!
> 
> Dana
> 
> Dana Brandt
> Ecotech Energy Systems, LLC
> www.ecotechenergy.com
> dana at ecotechenergy.com
> 360.510.0433
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