overcurrent protection

[gatormanrock]

can a 3 pole breaker be used to feed a two pole load? Please provide code reference. thanks

 

[Dennis Alwon]

I don't believe you will find a code reference however there is no reason that it wouldn't work since the breaker has a common trip.

 

[Dennis Alwon]

I just had to install a 3 pole cutler hammer in a single phase panel because a dp wouldn't work.

 

[Buck Parrish]

can a 3 pole breaker be used to feed a two pole load? Please provide code reference. thanks

110.3(b) might be an issue depending on the ahj.

 

[raider1]

The UL White Book Catagory (DIVQ) states that "3-pole circuit breakers are suitable for use on 3-phase systems. A 3 pole breaker used in place of a 2 pole breaker on a 3 phase system, such as a 2 pole breaker used in a branch circuit that is actually two legs of a 3 phase system, is acceptable without the 3 pole breaker being specifically marked."

Chris