#8 wire

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  #1  
Old 11-18-06, 05:00 PM
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#8 wire

I have some #8 wire left over from installing my air compressor.

Can I use it for a mig welder. The book says I need a 40 amp breaker. Will #8 wire carry 40 amps?

Thank you
 
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Old 11-18-06, 05:19 PM
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#8 is rated to 40 amps, provided it is COPPER wire.
 
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Old 11-18-06, 08:08 PM
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Question

Originally Posted by Curious Homeowner
I have some #8 wire left over from installing my air compressor.

Can I use it for a mig welder. The book says I need a 40 amp breaker. Will #8 wire carry 40 amps?

Thank you

This all depends. What and how is this#8 constructed?. Is it a cable? or is it a single conductor?
 
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Old 11-23-06, 08:20 AM
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#8 wire

The wire I have is #8 single strand copper.
 
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Old 11-24-06, 07:52 AM
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I presume stranded (many strands incased in 1 jacket).


Yes you can use this, IF labled THH/WN. It also will need to be installed in some type of conduit with a ground,#10 ins. min.
 
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Old 11-25-06, 10:15 AM
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Keep in mind 310.3- Stranded Conductors. Where installed in raceways, conductors of size 8 AWG and larger SHALL BE stranded.
 
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