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would using 12ga wire be dangerous if used for 220v-240v welder curcuit?

would using 12ga wire be dangerous if used for 220v-240v welder curcuit?

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  #1  
Old 12-27-12, 05:09 PM
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would using 12ga wire be dangerous if used for 220v-240v welder curcuit?

harbor frieght 110amp mig welder. 25amp breaker min I want to use 30a breaker. In my super small town the hardware store doesnt have anything bigger then 12g. And for the price like 1.50 a foot im scared to think what 8g would be.

Any way I have a heavy duty very long extension cable it's slightly bigger then 12g smaller then 8g but ive never seen anything in between.
I'm to broke to even joke about it and I need a welder so I can start making a little money.
But if its to dangerous, I dont want to start any fires and lose my dads house.

I know its not recommended but hey some people can't afford luxury.
 
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Old 12-27-12, 06:26 PM
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would using 12ga wire be dangerous if used for 220v-240v welder curcuit?
harbor frieght 110amp mig welder. 25amp breaker min I want to use 30a breaker.
You'll have to provide the correct information if you want help. Which welder are you asking about?
 
  #3  
Old 12-27-12, 06:59 PM
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With a 30 amp breaker you need to use # 10 wiring.

If you just had to use the # 12 wiring then you would have to put it on a 20 amp breaker to be safe.

I doubt a 20amp breaker could sustain the load of the welder.

As to your extension cord.....how would that work ?
Would you cut the ends off ?
A #10 extension cord is very rare. Most are # 12.
 
  #4  
Old 12-27-12, 07:07 PM
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I've ordered #10 wire a few times online. Recently I bought cerrowire 25 feet for $20 includes shipping. A while ago I bought 50' outdoor #10 wire for about dollar per foot. Everything was in new packaging from reputable online store.
 
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Old 12-27-12, 07:11 PM
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If it is this welder: 170 Amp MIG/Flux Wire Welder - 22 volts @ 110 amps then it says 20 amp is the info. Run it on #12 with a 20 amp breaker. The worst this that will happen is the breaker will trip. Little fire danger. Be sure to take breaks, it only has a duty cycle of 20%.
 
  #6  
Old 12-27-12, 09:20 PM
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IF you run a dedicated circuit for the welder different rules in the NEC apply. These rules are based in the duty cycle of the welding machine and allow a much larger circuit breaker than would normally be used.
 
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Old 12-27-12, 09:45 PM
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Furd wrote:

IF you run a dedicated circuit for the welder different rules in the NEC apply. These rules are based in the duty cycle of the welding machine and allow a much larger circuit breaker than would normally be used.


So if your duty cycle is 20% that is 20ampsX.45=9amps so you are well with in the rating for #12.
 
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Old 12-28-12, 03:17 PM
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Well if any one has a spare 100' of 8/3 that aint being used and you dont mind selling cheap hit me up. I should be able to save up some money in 10 years.
OR SELL MY COLLECTIBLES!!!!!!!

So if I had to wire it from the breaker in to the enclosed front porch, threw the attic, to the roof of my garage and down to the inside of the garage. What type of wire should i Be looking for?
 

Last edited by Pickerguy; 12-28-12 at 03:43 PM.
  #9  
Old 12-28-12, 03:29 PM
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You only need #12. Didn't you read Furd's post and my follow up?
 
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