Wiring

[moparstud440]

Will be upgrading my air compressor to a 80 gallon 5 hp so I need to add a circuit to my electrical panel. Also want to add a receptacle plug for a 240 volt welder while I'm at it. I don't yet have a 240 welder, but it will more than likely be a 180-200 amp model one. The air compressor will be approx. 30 ft from the panel box and where I want to put the welder plug would be 50 ft.

Option 1:
Run 2 separate lines so each have their own dedicated circuit.
1st to Hard wire the air compressor
2nd wire for welder plug

Option 2:
Run 1 line
Put a receptacle where the air compressor is and than use a plug for the air compressor instead of hard wiring it.
Continue the line to the welder plug

I was thinking of using 8 gauge wire and a 40 amp breaker.

I'm a hobbyist so I may get to work in my garage 2-3 times a month. The welder plug will more than likely will only get used 1-2 times a year as I have a 110v welder that is capable of doing 90% of the welding task I do. I figured when I use the 240 welder I'd turn off the air compressor so it won't kick on.

Which option would you guys do, or do you have any other suggestions?

 

[Illahe]

Will be upgrading my air compressor to a 80 gallon 5 hp so I need to add a circuit to my electrical panel. Also want to add a receptacle plug for a 240 volt welder while I'm at it. I don't yet have a 240 welder, but it will more than likely be a 180-200 amp model one. The air compressor will be approx. 30 ft from the panel box and where I want to put the welder plug would be 50 ft.

Option 1:
Run 2 separate lines so each have their own dedicated circuit.
1st to Hard wire the air compressor
2nd wire for welder plug

Option 2:
Run 1 line
Put a receptacle where the air compressor is and than use a plug for the air compressor instead of hard wiring it.
Continue the line to the welder plug

I was thinking of using 8 gauge wire and a 40 amp breaker.

I'm a hobbyist so I may get to work in my garage 2-3 times a month. The welder plug will more than likely will only get used 1-2 times a year as I have a 110v welder that is capable of doing 90% of the welding task I do. I figured when I use the 240 welder I'd turn off the air compressor so it won't kick on.

Which option would you guys do, or do you have any other suggestions?

Run two circuits. Wire is way over priced, but the project is worth doing right.

For the air compressor, follow the manufactures circuit protection requirements.

For the welder, I always install one size larger breaker and wire gauge. For instance, 8 gauge 40 amp~ requirement, Install 6 gauge 60 amp circuit.

 

[Murray]

Do you have room in your box for two new circuits?

 

[moparstud440]

Do you have room in your box for two new circuits?

Yes

 

[ESP47]

First thing is you need to figure out what welder you're getting and what the compressor and welder require for wire/breaker size.

I wouldn't go with option 2 because it's not up to code at all.

What about option 3? If your compressor and welder can utilize the same 3 wire NEMA plug, you can just install one receptacle and make yourself an extension cord for the welder. Should be cheaper with less work required. This way you can never run both at the same time and you won't need the second circuit ran.

Also I'd suggest looking on facebook marketplace for deals on wire. Local electrical supply houses are usually cheaper than big box stores. Wire is stupid expensive right now.

 

[moparstud440]

First thing is you need to figure out what welder you're getting and what the compressor and welder require for wire/breaker size.

I wouldn't go with option 2 because it's not up to code at all.

What about option 3? If your compressor and welder can utilize the same 3 wire NEMA plug, you can just install one receptacle and make yourself an extension cord for the welder. Should be cheaper with less work required. This way you can never run both at the same time and you won't need the second circuit ran.

Also I'd suggest looking on facebook marketplace for deals on wire. Local electrical supply houses are usually cheaper than big box stores. Wire is stupid expensive right now.

My garage is divided in half with a wall. The electrical panel is on my non shop side, that's where I plan to put my air compressor. I want the welder plug on my shop side for convenience.

 

[volaredon]

First thing is you need to figure out what welder you're getting and what the compressor and welder require for wire/breaker size.

I wouldn't go with option 2 because it's not up to code at all.

What about option 3? If your compressor and welder can utilize the same 3 wire NEMA plug, you can just install one receptacle and make yourself an extension cord for the welder. Should be cheaper with less work required. This way you can never run both at the same time and you won't need the second circuit ran.

Also I'd suggest looking on facebook marketplace for deals on wire. Local electrical supply houses are usually cheaper than big box stores. Wire is stupid expensive right now.

I did this option 3. Add a 2 post lift that's 220 powered to my welder and compressor, which are the same size as you're talking about. I don't have a problem since I'm never running any 2 of the 3 at the same time as each other. If I'm welding I'm not sanding or grinding or running an impact or air ratchet at the same time. I have 2 220 breakers among the 3 machines. The wire run from the breaker box is longest for the lift and that's only about 20ft of wire in emt conduit away. The lift is the most intermittent of the 3. I may run it up n down 10 times in the course of a job but it's not drawing anything when I'm not pushing the button and when I am, it's a minute at a time, each time/ "at most".