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Inspecting HVAC Systems Topics include heating, venting, and air conditioning inspections.

 
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  #1  
Old 10/24/09, 5:07 PM
Joshua L. Frederick Joshua L. Frederick is offline
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Default Electric air handler wiring

Electric air handler installed in attic for cooling only (boiler heat). The breakers/disconnects on the unit were 60 amp. The wiring supplying the unit was only 14 ga. on 15 amp fuses. System about 6 yrs. old.
Can someone enlighten me on this one?
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Old 10/24/09, 7:40 PM
Joshua L. Frederick Joshua L. Frederick is offline
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Default Re: Electric air handler wiring

Anyone????????
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Old 10/24/09, 7:54 PM
Jeffrey R. Pope's Avatar
Jeffrey R. Pope Jeffrey R. Pope is offline
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Default Re: Electric air handler wiring

Did you happen to get the data plate info?



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Old 10/24/09, 8:02 PM
Joshua L. Frederick Joshua L. Frederick is offline
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Default Re: Electric air handler wiring

As in what? Serial #????
I was mainly wondering about the size of wire for the 60 amp breakers on the unit. When, I got to thinking about it, wouldn't the air handler just have to have enough power for the blower, hence the 15 amp/14 ga. wire? I know it's not the greatest, but here's a pic.
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Old 10/24/09, 8:07 PM
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Jeffrey R. Pope Jeffrey R. Pope is offline
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Default Re: Electric air handler wiring

The data plate will often give the minimum and maximum circuit capacity.

There's no hazard here, the conductors are sized appropriately for the 15 amp breaker, but I can't offer any ideas as to why the disconnect is 60 amps.



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Old 10/24/09, 8:41 PM
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Bruce A. King Bruce A. King is offline
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Default Re: Electric air handler wiring

The airhandler is setup for optional installation of electric heat strips, 10kw typical.



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