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Discussion Starter #1
I would like to add a 100amp sub panel for my air compressor (31amp) and a Furnace (6amp?). Is it possible to run this in 1inch EMT? What wire size would be required 4/6ga copper?

The reason I ask is I have the EMT all ready there. Just need to run wire about 20 feet.
 

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Master Electrician
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4,603 Posts
# 4 Cu is good for 85 amps, #3 Cu for 100amps. Using the emt as the equipment grounding, 1" emt will accomodate 3 #4 or #3 conductors per the NEC.
 

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Electrical Contractor
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3,368 Posts
I've installed a 100 Amp feeder consisting of (2) #3 hots, 1 #4 neutral, and a #8 ground (all THHN Copper) into a 1" conduit. Tight, but it fits, and legal.
 

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A "Handy Husband"
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11,823 Posts
Why 100 amp for that load. Run #6 for a 60 amp sub and make the pull a lot easier (and cheaper) .
 
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