[RE-wrenches] Independent vs common trip two-pole breakers

[August Goers]

Hi Wrenches,



I'm doing a little circuit breaker homework and have been trying to figure
out if standard residential two-pole breakers for the inverter need to be
independent or common trip type. For example, Eaton Cutler-Hammer make
quadplex independent trip type and common trip type. My understanding is
that manual operation of either of these types must be done with both
two-poles. However, the independent trip type will trip one side of the
circuit without tripping the other. Incidentally, the rejection tab feature
(which prevents the breaker from being installed on non-notched type
busbars) seems to be more prevalent on the common trip models. Anyone a
breaker guru who can explain why one might one or the other?



Thanks,



August





August Goers



Luminalt Energy Corporation

1320 Potrero Avenue

San Francisco, CA 94110

o: 415.641.4000

august at luminalt.com
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