Home electrician question

Anthony

Club Member
Bought a welder off Moneypit

Need 220 in the garage for that and a compressor

One line will be fine. Won’t use both at same time.

Had a electric stove, 40 amp breaker 4 leg plug.
Welder and compressor are 3 legs

Wire that is ran to stove location is aluminum not copper.

Will that be ok? Or should I pull the alum out and replace with copper

IF I can keep the alum, how do I wire it for the 3 leg?
 
Get a 50 amp double breaker, aluminum wire is fine, get the correct receptical to match your welder and compressor and party on. Or call jack the roofer and he can hook you up lol.
 
The plugs in the welder and compressor might not be the same......could complicate things.

The welder is probably a NEMA 6-50P. Most compressors are not that big.

--Joe
 
Miller 175

Still looking for a compressor

There’s a few used on craigslist

60 gal 3-5 hp

Campbell hausfeld
Ingersol
Porter cable

https://www.tractorsupply.com/tsc/p...belt-drive-air-compressor-60-gal?cm_vc=-10005

https://detroit.craigslist.org/mcb/tls/d/ingersoll-rand-air-compressor/6350343411.html

https://detroit.craigslist.org/wyn/tls/d/5-hp-60-gal-air-compressor/6363564816.html

Kinda want the ingersol but dude want answer

Might just drive to tractor supply tomorrow for 450 it’s new. Vs 350 for the black one used from 2012
 
I added a 220v 50 Amp circuit to my garage for the compressor. It was a 6-50R/6-50P. I wasn't going to run another 220v circuit so I changed the compressor to a 6-50P plug.
 
Personally, I'd just install a sub panel in the garage and home run your welder and compressor circuits to there. That'd also allow you to install some more plug circuits, receptacles and lights around the garage w/o overloading anything. It also would enable use of newer 4-wire 220V appliances. It shouldn't be that hard to pull a new sub panel feed to an attached garage.

You need to be careful with modifying that AL circuit. CU and AL do not like each other, and can cause a fire just being connected together improperly. Any new breakers or receptacles also need to be rated for AL, and if you need to join wire, then you need to use an AlumiConn or similar joiner.

Putting a 50A breaker or receptacle on a branch circuit rated for 40A is against NEC - FYI.

In a perfect world, I'd pull out the old stove AL run, use that same/similar path to chase a new 100A subpanel feed, and then run your welder and compressor circuits from the sub.
Or less perfectly, change the existing 40A stove plug configuration that is compatible with the welder and compressor, but still is a NEMA 40A receptacle.
 
Technically, any of the work mentioned in this thread requires a permit. I personally wouldn't pull one for just changing the receptacle out, but would for installing a new subpanel. The permit shouldn't be too much $, probably ~$50-75.

If you "just run a line over there", I think I'd ask why not just make that line a subpanel feed to the garage vs. a single branch circuit. It's not that much more work, and a lot more practical/flexible for the future.
 
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