I'm pricing out options on a new house and know that I eventually want to run an air compressor and possibly other tools that require a 220volt from the garage (welder?).

Here's the options on the pricing list:
220 Volt Outlet 30 Amp Circuit
220V 50 Amp Circuit w/Disconnect
100 Amp subpanel
110 Dedicated Circuit
110 GFI Outlet
110 Outlet
110V Floor Outlet

Which of these do I need? I don't know nothing about electrical stuff.

 

the 30amp i believe.... the disconnect would be for something even bigger i think, and permanent...

a separate subpanel would be really nice because from there you could add any needed circuits in the garage, including the 220

the dedicated circuit would be for something like an alarm system maybe, or a clock, or emergency exits/lighting, or anything you don't want to go off, if you blow a circuit

the GFCI would be for anything close or possibly near water, or something that a grounded ext cord could be plugged into that would be near water or outside...


I think thats the basics...

 

if you plan on getting a decent welder i believe 220 50 amp, i sure you will be pointed in the right direction

 

check around at welder websites, or local welding shops if there are any,,,, they would be able to tell you I am sure

 

Any of these can be wired for 220V, but the last two give you the amperage to run anything. The easiest is probably just to go with #2 since the max the 100 Amp subpanel (assuming it's a 110V incoming line) could be wired for would be the same thing (220V, 50A). Just as an FYI, most well built garages will usually run 100 Amp subpanel AND a 220V outlet (either 30A or 50A.......for most people the 30A is fine even with a large air compressor or welder, but a very large MIG or TIG may need more power) AND a 110V outdoor GFCI outlet.......and that's probably what I would run if I was doing it.

 

Definately a 100 amp subpanel, from there you can add any circuit you need.

Once I finish cleaning up my garage, I'll be wiring in my subpanel, from there a 220v 50a circuit for my TIG welder with slow blow fuses, then a 220v 30a for my compressor and finally a bunch of 110v circuits for the rest.

 

I love you electricians! I was wondering about this too.