A/C disconnect

Status
Not open for further replies.
TOOL_5150

TOOL_5150

Senior Member
Location
bay area, ca
I have a situation where I need to change the A/C disconnect to a subpanel, so I can run a few circuits off of the feed. Does the NEC specify that the A/C disconnect need to be fused, or can it be a breaker? Basically, I want to take the fused disconnect out, wire up a 6 space panel and have the A/C directly connected to a breaker in the panel. The feed to the disconnect is a 60a breaker off of the main panel. I believe the condenser unit is 30a.

~Matt
 
TOOL_5150 said:
Does the NEC specify that the A/C disconnect need to be fused, or can it be a breaker?
Click to expand...

The unit itself will specify this information. I just did an A/C hook up job last Friday, and all the units stated a fuse or HACR breaker requirement on them.
 
You'd have to look on the a/c's dataplate. Some say maximum fuse or breaker size, and others just say maximum fuse size. If it just says maximum fuse size, then you're stuck with using fuses in some manner. That doesn't mean you can't set your sub anyhow and feed out to a fused disco for the a/c.
 
TOOL_5150 said:
Does the NEC specify that the A/C disconnect need to be fused, or can it be a breaker?
Click to expand...
Look at the name plate on the unit. It will probably say:

MOCP fuse or hacr.

Then a hacr breaker will do the job.
 
Thanks Peter, and Marc!

Now, to see if the nameplate will "work with me" I dont really want to have a bunch of boxes on the side of the house unless absolutly necessary.

~Matt
 
brantmacga said:
You have a 4-wire cable feeding an A/C disconnect?
Click to expand...
When I need a receptacle for service and there is none available I like to run 12-2-2 for the service receptacle also it is a nice job one cable one stop shopping.
 
brantmacga said:
You have a 4-wire cable feeding an A/C disconnect?
Click to expand...

I do, the 3rd wire is taped off and pushed to the back of the disconnect. They even used square D QO panels in the house too! I am sure the EC that did this tract wasnt cheap! :grin:

~Matt
 
Status
Not open for further replies.
Top