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?

 

Normally residential units have built in protection and unfused disconnects are used. That applies to service panels, not disconnects. Usually. Check with your AHJ.

 

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.

 

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.

 

So anyone know what the clearance requirements are?

 

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

 

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.