garage wiring

[that-guy]

so I'm working out a diagram on wiring up the blank canvas garage I just got with a new house purchase. lets say its 24x24, 2 garage doors, 10 feet to the bottom of the rafters. I want three 120 outlets on both the left and right sides, four 120 outlets on the back wall, and one 220 on each of those three walls. as well as 9 pot lights in the ceiling.

I already know that I will put each walls receptacles on their own breaker, and all three 220's on one as well, and the 9 pot lights to be put on two breakers, using 2 switches. so my question is, what size breakers should I be using? my thought is that each string of receptacles will have 20's, each set of pot lights will have 20's, and the 220's will have a 50.

so that's one 50, and five 20's, with a 200 amp main. does this sound right?

 

[pattenp]

If this is residential use and you are thinking of having 3 240V 50A outlets on one circuit you better check with your local building authority because code may not allow more than one 240V 50A outlet per circuit. International Residential Building Code only allow multiple outlets on circuits that are 20 amps or less.

 

[that-guy]

If this is residential use and you are thinking of having 3 240V 50A outlets on one circuit you better check with your local building authority because code may not allow more than one 240V 50A outlet per circuit. International Residential Building Code only allow multiple outlets on circuits that are 20 amps or less.

so I would need 1 separate breaker for each 220? that's 250 amps total

 

[that-guy]

thru this together real quick in MS paint

 

[pattenp]

so I would need 1 separate breaker for each 220? that's 250 amps total

A separate breaker/circuit for each 240V 50A would be the case if that code applies to your local area. To determine panel load you don't just add up the breaker amounts. Not all circuits are fully loaded at the same time.

 

[slow]

What is your use for the 240 volt 50 amp? I assume welder?

Personally, I would figure out where you are most likely to use the welder and put one in that location, preventing the headache/cost of multiple breakers or code issues.

I have a nice 8/4 SO extension cord for my welder, so i could simply plug it anywhere and reach outside into the driveway.

 

[that-guy]

I have my TIG, Plasma, and in the future, a lift, all which will require a 220v. I only want the multiple locations so that I can reach just about any location in the shop, mostly for the TIG...if not 3, I do at least want 2

I'm aware I won't be loading every circuit to the max, i just want more than i need instead of too little

 

[pattenp]

If you are not having inspections done then you can put as many 50A outlets on one circuit as you like. If you are having inspections done then do it and ask for forgiveness if it comes up as an issue. You can probably get around the inspection by removing extra outlets and putting on blank cover plates.

 

[that-guy]

If you are not having inspections done then you can put as many 50A outlets on one circuit as you like. If you are having inspections done then do it and ask for forgiveness if it comes up as an issue. You can probably get around the inspection by removing extra outlets and putting on blank cover plates.

the garage already has 4 outlets in it that the previous owner put in. they all work, but he secured them to the edge of his workbench, which I am getting rid of, so I am just simply "altering" the existing layout, aka, removing it all and starting over. I just want to make sure the job is done safely and efficiently

 

[Notgrownup]

If you can , isn't it better to have 2 separate circuits though? I was wondering the same for my new shop... I have a 220 compressor but I want a welder later on...

 

[Rock knocker]

as well as 9 pot lights in the ceiling.

Seattle, Colorado or MMJ?

 

[that-guy]

Seattle, Colorado or MMJ?

adult conversations going on in here...

 

[wyliesdiesels]

OP is the garage attached or detached?

Compressor and lift should be their own individual circuits.

The lift and compressor likely have dfferent electrical requirements so u cant just put in a bunch of 50 outlets and expect it to work for all equipment.

What size compressor? If more than 3HP, it needs to be hardwired so 50 a recepticle wont work...

Welder circuits have special wiring allowances...

 

[Rock knocker]

adult conversations going on in here...

 

[Norcal]

If someone is calling recessed cans "pot lights", there is a pretty good chance they are Canukistani.

 

[that-guy]

my compressor is only 115v, so that is not an issue. the garage is detached

and no, I'm not Canadian

 

[CNGsaves]

OP is the garage attached or detached?

Compressor and lift should be their own individual circuits.

The lift and compressor likely have dfferent electrical requirements . . .
. . . so u can NOT just put in a bunch of 50 outlets & expect it to work for all equipment.

What size compressor? If more than 3HP, it needs to be hardwired so 50 a recepticle wont work...

Welder circuits have special wiring allowances...

Fixed it for 'ya !!

 

[wyliesdiesels]

Fixed it for 'ya !!

DAMN phone auto correct!