PANEL SIDE FED MAIN BREAKERS
PANEL SIDE FED MAIN BREAKERS
(OP)
What are the NEC requirements in regard to using a normal circuit breaker as a panel main disconnect. That is with a single power source and the normal main lugs are left open. It is a common practice in the field, but, I need to double check if there are restrictions on this practice. In this case the side fed main is sized to the amperage requirement of the feed conductor. The power source is a 460/208 transformer with a primary and secondary side fused disconnects. There is no thermal (6 versus 3 spaces) issue in the case also as this is only a 30A aplication.






RE: PANEL SIDE FED MAIN BREAKERS
Someone else may need to confirm this, but you should be OK as long as the breaker is not marked with specific "line" and "load" terminals.
RE: PANEL SIDE FED MAIN BREAKERS
RE: PANEL SIDE FED MAIN BREAKERS
RE: PANEL SIDE FED MAIN BREAKERS
RE: PANEL SIDE FED MAIN BREAKERS
RE: PANEL SIDE FED MAIN BREAKERS
Like some many other things, the real answer is "it depends".
RE: PANEL SIDE FED MAIN BREAKERS
RE: PANEL SIDE FED MAIN BREAKERS
"Line and load markings on a circuit breaker are intended to limit connections thereto as marked."
http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRA...
Don
RE: PANEL SIDE FED MAIN BREAKERS