Requirements for AC Disconnect

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02-21-14, 04:32 PM

bobbsledd

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Requirements for AC Disconnect

I need to install a new disconnect for my residential AC condenser unit. I'm installing a 30A fusible pullout disconnect. The old disconnect is located behind the unit, which I don't believe is legal.

My understanding is that I need 36" clearance in the front and 30" side clearance (15" on each side). Is this correct? Also, is an outlet required for servicing the unit?

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02-21-14, 04:41 PM

ray2047

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Quote:

I'm installing a 30A fusible pullout disconnect.

Normally residential units have built in protection and unfused disconnects are used.

Quote:

My understanding is that I need 36" clearance in the front and 30" side clearance (15" on each side). Is this correct?

That applies to service panels, not disconnects.

Quote:

Also, is an outlet required for servicing the unit?

Usually. Check with your AHJ.

02-21-14, 04:45 PM

bobbsledd

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I'm using a fused disconnect because the new unit has a max fuse size of 25A, So I'm fusing down my 30A circuit.

02-21-14, 06:14 PM

CasualJoe

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You could also change the breaker to 25 amps. That being said, if the label says fused disconnect, some inspectors will insist on fused protection like you are planning.

02-21-14, 09:50 PM

bobbsledd

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So anyone know what the clearance requirements are?

02-22-14, 12:27 AM

pcboss

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I would go with the 30x 36. The unit does not need to be centered.

02-22-14, 09:13 AM

PATTBAA

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NEC Art. 210.63 requires a receptacle outlet for the servicing of heating , A.C., and refrigeration equiptments , but that's , as regards your situation, a "new installation" requirement, but it would be in your best interest to provide such receptacle.