220v outlet for welder powered by (2) 20 amp breakers

[MossRoad]

OK, so reading up on it, it's a multi-wire branch circuit. Circuit as in singular, not circuits, plural. It's one circuit, not two. Correct?

 

[grsthegreat]

OK, so reading up on it, it's a multi-wire branch circuit. Circuit as in singular, not circuits, plural. It's one circuit, not two. Correct?

no, there 2 separate circuits. They share a neutral. The reason you use 2 pole breaker is the necessity to kill both circuits in the box if working on it.

 

[grsthegreat]

Contractors here use them to run both required kitchen circuits for kitchen. Can run both circuits thru 1 wire. Again...not on my jobs

 

[MossRoad]

no, there 2 separate circuits. They share a neutral. The reason you use 2 pole breaker is the necessity to kill both circuits in the box if working on it. View attachment 669015

Yes, I see the same circuit example all over the place. All of them refer to it as a circuit, not circuits. Anyhow, looks nightmarish. Thanks for the info.

 

[grsthegreat]

Yes, I see the same circuit example all over the place. All of them refer to it as a circuit, not circuits. Anyhow, looks nightmarish. Thanks for the info.

you should see how bright incandescent lights ger when you unhook the neutral. Like looking at sun. Led lights get instantly destroyed

 

[k0ua]

To the OP, Well Gene, looks about like I said earlier, the 120 volt works, but not really to your satisfaction. Cant run the sizes of rods you would like at the heat settings you would need without breaker tripping. You really need at least a 240 volt (or what ever it runs in your area) at least 30 amp circuit and breaker, and at a minimum #10 wire, BUT I would go bigger. And here is why, what if some day you want a larger welder? I put in a 50 amp circuit (kinda standard for homeowner welding circuits ) and wire and breaker sized to match. While I have never gotten a larger welder, I can if I want to.

 

[GeneV]

To the OP, Well Gene, looks about like I said earlier, the 120 volt works, but not really to your satisfaction. Cant run the sizes of rods you would like at the heat settings you would need without breaker tripping. You really need at least a 240 volt (or what ever it runs in your area) at least 30 amp circuit and breaker, and at a minimum #10 wire, BUT I would go bigger. And here is why, what if some day you want a larger welder? I put in a 50 amp circuit (kinda standard for homeowner welding circuits ) and wire and breaker sized to match. While I have never gotten a larger welder, I can if I want to.

I hear ya man, but since I'm stumped for now....well look it, I could never get my 90 amp flux core welder to bite into 1/4" plate like I did with this Amico on 120v, using e6011. That's a win right there!

I forgot which one of you guys said it, just learn to weld stick using the power you got. Sounds legit to me, I'll figure something out with the electricity eventually.

 

[GeneV]

OK, I'm confused (nothing new there). You can't put 2 circuits on a 2-pole breaker.

Me personally, the only thing I know about electricity is which wire to use with which breaker, stuff along those lines. I know enough to keep from blowing stuff up lol, but as far as actual electrical theory, I'm fairly ignorant. I only learned about this edison circuit by googling shared neutral wire circuits.

 

[grsthegreat]

Not wanting to reread entire post, but cant you just run a new circuit back to panel thru crawl space or attic. Im an electrical contractor and did that cra* nearly every week. Not that hard, and would of taken less time than rereading 4 pages of replies.

 

[GeneV]

Not wanting to reread entire post, but cant you just run a new circuit back to panel thru crawl space or attic. Im an electrical contractor and did that cra* nearly every week. Not that hard, and would of taken less time than rereading 4 pages of replies.

It's not super easy here, but yeh where there's a will, there's a way. In any case, the original quick & dirty idea is dead in the water, that's obvious now.