Ac unit disconnect.

[Ab-man]

Hello

Is there anything in code which prohibits using a double pole circuit breaker as a disconnect at the ac unit? Also if there are any other reason why not to do it? Thanks

 

[Dennis Alwon]

The only thing that could possibly be an issue is if the unit states max fuse. Most units state max fuse or circuit breaker. Other than that a cb is fine but you don't need a fused disconnect or breaker in most cases.

 

[Little Bill]

Hello

Is there anything in code which prohibits using a double pole circuit breaker as a disconnect at the ac unit? Also if there are any other reason why not to do it? Thanks

The only thing that could possibly be an issue is if the unit states max fuse. Most units state max fuse or circuit breaker. Other than that a cb is fine but you don't need a fused disconnect or breaker in most cases.

Dennis, I think the OP meant the disconnect outside at the unit.

 

[Cavie]

Dennis, I think the OP meant the disconnect outside at the unit.

Dennis' answer is correct. but a disconect is required

 

[infinity]

One reason not to do it is that pull-out AC disconnects only cost about $12. A 2 pole enclosure and CB will cost more.

 

[Dennis Alwon]

Dennis, I think the OP meant the disconnect outside at the unit.

That is what I responded to. You don't need a fused diconnect or CB disconnect but you do need a disconnect. We generally used unfused discos.

 

[kwired]

A good place for this application is where you have an outdoor loadcenter that is within sight of the air conditioning equipment. The branch circuit breaker is the disconnecting means no additional disconnect is required.


If you have multiple air conditioning units you could bring one feeder to a panel within sight of all the units and have a disconnect for each one at the panel.

 

[Little Bill]

That is what I responded to. You don't need a fused diconnect or CB disconnect but you do need a disconnect. We generally used unfused discos.

Sorry Dennis, I read (or read into) your reply incorrectly when I posted. I thought you thought he was talking about in the panel.