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> Installing a 220V circuit for a 220V welder - need help.
GlennCMC70
post Nov 9 2008, 02:19 AM
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there is no 220V service in my garage - thats about to change.

i picked up a 250V 30A outlet (3 slots arranged in a circle w/ one looking like a "L") which matches the plug on the welder.
i have a 30A breaker that takes up two slots in the breaker panel for the house (located in the garage!)
i have some new 10 gauge 3 conductor wire (black, white, and green conductors).
snap the breaker in place - make sure its switched off.
install a black and white conductor in one of the two set screw slots in the 30A breaker.
connect the other ends of the black/white to the outlet and the ground to the ground on the back of the outlet and inside the breaker panel (metal box).


to be honest here, the only thing i know about A/C electricity is it can kill you. other than that, i don't know jack. i can replace a bad outlet/socket/switch, but i couldnt wire any 110v circuit from the box to the wall if i had to.

so does the above sound right? i know there should normally be a red wire to use in place of the white, but i've read thats really only required for 4 prong plug/outlets.

looking for the FRAXX guidance here oh wise one's. (IMG:http://www.frrax.com/rrforum/style_emoticons/default/drink.gif)
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Torque
post Nov 10 2008, 04:20 AM
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Thanks for the explanation on Romex. The melting wire having the metal conduit as a shield/last grounding resort makes a lot of sense. Hopefully with the way they have codes these days with all the new circuits I installed (one for fridge, one for dishwasher, one for disposal, one for range hood, one for the microwave, 2 for lighting, 2 for outlets in the kitchen alone), seems like I'd be challenged to overload the romex by having it close to impossible to oversubscribe.

Now I just worry about the remaining knob and tube wiring in the rest of the house ;-)
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nape
post Nov 11 2008, 04:37 AM
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QUOTE (Torque @ Nov 9 2008, 10:20 PM) *
Thanks for the explanation on Romex. The melting wire having the metal conduit as a shield/last grounding resort makes a lot of sense. Hopefully with the way they have codes these days with all the new circuits I installed (one for fridge, one for dishwasher, one for disposal, one for range hood, one for the microwave, 2 for lighting, 2 for outlets in the kitchen alone), seems like I'd be challenged to overload the romex by having it close to impossible to oversubscribe.

Now I just worry about the remaining knob and tube wiring in the rest of the house ;-)


Knob and tube isn't too scary (IMG:http://www.frrax.com/rrforum/style_emoticons/default/wink.gif)

In some of the old buildings in Chicago, when they were originally converted over to electric lighting from gas lighting, the gas pipe was reused and they just pulled wire through it. Theoretically, this works great because gas pipe is just like Rigid electrical conduit. Super safe!

Well, super safe until you pull the plug out of the pipe to get a little slack in the wire or re-pull... and GAS COMES OUT! Whoever originally did the conversion never seperated the "gas" and "electrical" pipe work!

I'll take knob and tube over that any day, unless there's been a squirrel in the attic chewing on it... which leads me into the next reason big cities need pipe. The mice and rats would have the electrical system in shambles in a few days with as much as they like to chew insulation.

A while ago, the contractor my best friend works for got a job running 6" EMT pipe in a hotel re-model downtown. The pipe wasn't for anything electrical. It was for the beer and soda lines running to the bar from the barrels/syrup bags in the basement. They have to do that otherwise the rats will chew holes in the clear plastic tubing and suck the sweet syrup for all the drinks.

The more you know... (you wish you didn't)

This post has been edited by nape: Nov 11 2008, 04:40 AM
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Posts in this topic
GlennCMC70   Installing a 220V circuit for a 220V welder - need help.   Nov 9 2008, 02:19 AM
trackbird   Sounds about right. Make sure you run the ground l...   Nov 9 2008, 02:35 AM
GlennCMC70   good. now any advice on running a temp run across...   Nov 9 2008, 02:42 AM
trackbird   I ran mine through the studs. If not, I'd put ...   Nov 9 2008, 03:21 AM
sgarnett   I used metal conduit and a metal outlet box for my...   Nov 9 2008, 03:34 AM
GlennCMC70   i plan to use the PVC outdoor stuff. thanks guys.   Nov 9 2008, 03:59 AM
Wayno   Is you're panel mounted between the studs ...   Nov 9 2008, 04:15 AM
GlennCMC70   between two studs "in" the wall. i was ...   Nov 9 2008, 04:21 AM
FBody383   When I ran mine I had about 20' of wire left o...   Nov 9 2008, 05:41 AM
GlennCMC70   this used welder came w/ a 20' plus cord on it...   Nov 9 2008, 05:52 AM
Torque   Not an electrician but I can tell you how I most r...   Nov 9 2008, 06:55 AM
Torque   the wire i have turns out to be 14-3 and not the 1...   Nov 9 2008, 07:20 AM
sgarnett   220V dryers and ovens get a neutral, because they ...   Nov 9 2008, 03:14 PM
GlennCMC70   QUOTE (sgarnett @ Nov 9 2008, 09:14 AM) 2...   Nov 9 2008, 03:18 PM
GlennCMC70   accually the way i understand it is the neutral is...   Nov 9 2008, 03:16 PM
nape   I AM an electrician and Sean's advice is corre...   Nov 9 2008, 04:50 PM
Torque   Out of curiosity, what's the safety issue with...   Nov 9 2008, 05:46 PM
nape   QUOTE (Torque @ Nov 9 2008, 11:46 AM) Out...   Nov 9 2008, 09:41 PM
GlennCMC70   got it done. usd the black and red to the 30A brea...   Nov 9 2008, 07:07 PM
nape   QUOTE (GlennCMC70 @ Nov 9 2008, 01:07 PM)...   Nov 9 2008, 09:49 PM
sgarnett   QUOTE (nape @ Nov 9 2008, 04:49 PM) The s...   Nov 11 2008, 05:20 AM
Torque   Thanks for the explanation on Romex. The melting ...   Nov 10 2008, 04:20 AM
nape   QUOTE (Torque @ Nov 9 2008, 10:20 PM) Tha...   Nov 11 2008, 04:37 AM
firehawkclone   This tread came at the perfect time. I've need...   Nov 10 2008, 03:56 PM
nape   As ironic as this is going to sound, I had an elec...   Nov 11 2008, 04:21 AM
Torque   QUOTE (nape @ Nov 10 2008, 08:21 PM) Anyw...   Nov 11 2008, 05:25 AM
nape   QUOTE (Torque @ Nov 10 2008, 11:25 PM) Wo...   Nov 11 2008, 11:11 PM
Torque   QUOTE (nape @ Nov 11 2008, 03:11 PM) QUOT...   Nov 12 2008, 12:17 AM
TOO Z MAXX   QUOTE (nape @ Nov 10 2008, 11:21 PM) As i...   Nov 12 2008, 06:15 AM
nape   QUOTE (TOO Z MAXX @ Nov 12 2008, 12:15 AM...   Nov 12 2008, 11:47 PM
marka   Howdy, First time I ever heard anything bad (safe...   Nov 12 2008, 01:51 PM
sgarnett   On the shoeless cobbler's kids topic, I screwe...   Nov 12 2008, 02:51 PM
Machine   2 things that I was thinking regarding your applic...   Nov 12 2008, 08:24 PM
nape   QUOTE (Machine @ Nov 12 2008, 02:24 PM) D...   Nov 12 2008, 11:29 PM

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