230V dedicated circuits?

[vavet]

I'm planning to insulate and drywall my detached garage/workshop. In an effort to futureproof this, I'd like to add some additional 230V circuits.

I have a total of three 230V circuits currently: one for future mini-split, another for the the auto lift, and 3rd one where the autolift was originally planned.

This is a residential garage and I'm likely the only one to be working in there at, so it's unlikely to have more than one 230V circuit on at a time (with the exception of mini-split).

Is it permissible to daisy chain 230V circuit boxes together? It would be arranged so I would have one 30 amp breaker that would feed multiple junction boxes? My thought is I'll run the wire from the breaker box to a new junction box with wire nuts, but no receptacle. Then I'll run more wire to the next junction box 8 feet away. I've heard of something called non-coincidental loads - you wouldn't have your AC running at the same time as your furnace, so this is OK. Since they are not pre-defined loads, is this Ok to do?

 

[pattenp]

If your locality follows IRC International Residential Building Code then no. Multiple outlet circuits are not to be over 20A.

 

[Crazyjake8493]

Nothing wrong with having multiple junction boxes on a circuit and installing one receptacle in the box needed down the road. If you're not sure where you'll want the 240V receptacles at this point, I'd consider surface mounting those circuits in the future, rather than having a bunch of boxes for nothing.

 

[ard]

Future proof, run emt to a 4x4 box in the center of each wall, back to the panel.

You will be able to add outlets as needed in the 4x4, 240V or whatever...or attach a 4x4 ring to that box and then extend surface mount conduit left or right.

 

[Falcon67]

Put in a big enough panel to handle the later runs. I did - and I'm still out of room. SO go larger.

 

[Crazyjake8493]

Put in a big enough panel to handle the later runs. I did - and I'm still out of room. SO go larger.

You can never go too big when it comes to a panel for the shop.

 

[jtbinvalrico]

I’d do the home runs for each circuit and be done with it. When you bring the wires into the panel, you can cap them and tie them off to the side...if you ever want to use that circuit, put a breaker in and run it....Future-proofed and you won’t have to tear into your walls later.

YMMV....This approach inspected and approved here in Hillsborough County, FL.


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