 OT: 230v welder wiring, using a dryer circuit |
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| bondo |
 Mar 23 2005, 04:23 PM
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Practicing my perpendicular parking  Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California  |
I just got a millermatic 175 welder. 230v, 19.5 amps. I'm going to make an extension cord for it and was wondering what guage wire I should use. Is 12ga enough? (going about 30 feet, just enough to get all the way around the garage, and into the driveway a bit)
Also, the dryer outlet is neutral grounded. Should I use it as is or add a second outlet with a real ground? |
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| bondo |
Mar 23 2005, 08:19 PM
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Practicing my perpendicular parking Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California |
I understand that it will work fine if I just wire it up. Heck, it would work just the same if I only used 2 wires. The issue I am trying to resolve is safety. I'm guessing it is almost as safe as using a real ground. I get isolation through the transformer as well. Probably just as safe as using it to ground a dryer. I HAVE experienced a neutral failure though.. The insulation failed in the line to the pole. The neutral wire was intermittently shorting to one of the hot wires.. which gave half the house 230 instead of 115.. A tv that was off was turning itself on and making strange noises. Several power strips failed open, lights were getting REALLY bright and one power strip melted. If using a neutral ground when that happens, the case of the welder would then be "hot" relative to real ground (that I'm standing on). I guess that's just unlikely enough that I shouldn't worry about it.
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Posts in this topic
bondo OT: 230v welder wiring Mar 23 2005, 04:23 PM
Series9 Neutral and ground are exactly the same.
Use 3 co... Mar 23 2005, 04:30 PM Root_Werks My wife's Dad has a really nice welder, he had... Mar 23 2005, 04:31 PM Travis Neff I think you want the 8 gauge wire for that, I used... Mar 23 2005, 04:32 PM Twystd1 Note: Ground and Neutral are NOT the same thing.
... Mar 23 2005, 05:01 PM Travis Neff So your suggestion of a separate ground, where the... Mar 23 2005, 05:16 PM Series9 <... Mar 23 2005, 05:28 PM bondo Hmm, here is my understanding of neutral grounding... Mar 23 2005, 05:34 PM Series9 Mar 23 2005, 05:42 PM Travis Neff If the welder has two hot leads and a neutral with... Mar 23 2005, 05:54 PM bondo Mar 23 2005, 06:49 PM bondo I just checked the circuit diagram for the welder.... Mar 23 2005, 07:00 PM Series9 Mar 23 2005, 07:28 PM Travis Neff http://www.914world.com/bbs2/h... Mar 23 2005, 08:06 PM Series9 Mar 23 2005, 10:14 PM jonwatts http://www.914world.com/bbs2/ht... Jan 16 2006, 01:51 AM sgomes I've got an idea. Why don't you just buy ... Jan 16 2006, 07:50 AM sj914 That extension cord would work, but I think the pr... Jan 16 2006, 08:42 AM jonwatts Jan 16 2006, 09:29 AM 914GT ... Jan 16 2006, 09:37 AM r_towle the industry has changed from 3 wire to four wire.... Jan 16 2006, 10:58 AM jd74914 <... Jan 16 2006, 11:27 AM fiid Nothing electrical here, but for MIG sets, please ... Jan 16 2006, 11:28 AM jonwatts <... Jan 16 2006, 11:55 AM 914GT I know my local home depot has 4-conductor #6 flex... Jan 16 2006, 12:17 PM
9146986 Jan 16 2006, 01:22 PM |
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