[RE-wrenches] Independent vs common trip breakers

[William Miller]

August:

I suspect that the handle tie that allows only one pole to trip is not 
working as designed.  There are handle ties that are retrofitted that do 
not trip both poles reliably.

William Miller


At 04:26 PM 9/25/2012, you wrote:
>William,
>
>Good points. Keep in mind that both of these breakers have handle ties
>(both are two pole), it's just that one can trip independently and the
>other forces both to trip. What is the correct solution for 240 V solar
>inverters? It seems like common trip is the best way to go but I've not
>been able to find any direct reference to this in a brief internet search.
>
>  I'm a CA certified general electrician but the test didn't go into this
>kind of detail.
>
>-August