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Electrical Inspections Contains discussions about electrical systems. This includes receptacles, panels, wiring, etc.

 
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  #1  
Old 5/28/08, 12:20 PM
Bruce A. Cargin's Avatar
Bruce A. Cargin Bruce A. Cargin is offline
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Default Unusual A/C wiring

Yesterday I was inspecting a home which has an unusual feeder to the A/C. What is happening is that the feed to the A/C runs directly off the meter box, as opposed to coming from a main or sub panel, through conduit to a 50 amp A/C service box. I did not pull the meter due to utility tamper wire so I can not verify how it is wired inside the meter box. FWIW the homeowner is preparing to sell and is having the inspection in preparation for sale - the A/C was added after the house was built and wired this way over tens years ago by an electrician.
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Old 5/28/08, 12:30 PM
Greg Fretwell Greg Fretwell is offline
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Default Re: Unusual A/C wiring

230.72 Grouping of Disconnects.
(A) General. The two to six disconnects as permitted in 230.71 shall be grouped. You can't have a disconnect off by itself.
The A/C disconnect may not be "suitable for service equipment".
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Old 5/28/08, 12:36 PM
Greg Fretwell Greg Fretwell is offline
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Default Re: Unusual A/C wiring

BTW this is not a "feeder". These are service conductors since there is no upstream protection
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Old 5/28/08, 12:39 PM
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Bruce A. Cargin Bruce A. Cargin is offline
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Default Re: Unusual A/C wiring

Thanks Greg - I remember this from a class I took last year but could not put my finger on it. The idea being that all electricity can be shut off from one location using fewer than 6 actions as opposed to running all over the house trying to find shut-offs. Am I getting this right?

Bruce
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Old 5/28/08, 7:53 PM
Greg Fretwell Greg Fretwell is offline
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Default Re: Unusual A/C wiring

Yep. All 6 disconnects must be in the same area, preferably right next to each other and properly labeled.
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