[RE-wrenches] backfeeding "six disconnect" panel

Dana Brandt dana at ecotechenergy.com
Thu Oct 28 17:19:26 PDT 2010


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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