Circuit breaker handle ties for line-to-line feed

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Re: Circuit breaker handle ties for line-to-line feed

In my opinion, there is nothing wrong with fuses or single pole circuit breakers. In the case of circuit breakers, the handle ties are for switching, not for opening the other poles under tripping conditions. I see no real difference between circuit breakers and fuses except circuit breakers are capable of being constructed with a common trip mechanism.

I think the problem has been that the multi-pole circuit breakers with handle ties have normally tripped the adjacent poles when one pole tripped. Electricians have become lazy and not checked the other terminals under those conditions and have assumed a dead circuit. Due to this habit, the single pole circuit breakers with handle are in the process of being prohibited. :mad:
 
Re: Circuit breaker handle ties for line-to-line feed

Originally posted by poweringtech:
We know that fuses were the protection used before circuit breakers were invented.
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That may be true in dwelling units, outside of dwelling units fusible disconnects, fusible, switchgear, fused mains etc, are still specified by engineers for many jobs, I do not see that changing anytime soon.

I do not think additional warning labels will help, IMO we have warning label overload now. :roll:

Seriously who here stops and reads all the labels on the equipment? :roll:

If I go to service a simple electric water heater because "Its Dead" you can bet I check with some sort of meter, I do not take anyones word on it. Even if I know it is fed by a breaker I check to see if all poles are dead.
 
Re: Circuit breaker handle ties for line-to-line feed

Originally posted by charlie:
I think the problem has been that the multi-pole circuit breakers with handle ties have normally tripped the adjacent poles when one pole tripped. Electricians have become lazy and not checked the other terminals under those conditions and have assumed a dead circuit. Due to this habit, the single pole circuit breakers with handle are in the process of being prohibited. :(
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