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Electrical Wire and Cable

Installing a Workshop Circuit

workshop electrical wiring

Summary: What Wire Size should I use for a Workshop Circuit?

Wire Size for a Workshop Circuit

Electrical Question:
What Wire Size should I use for a Workshop Circuit?

  • I'm installing a #4 wire for the circuit to my workshop.
  • The workshop is about 100 feet away from the house.
  • I'm planning on using #8 solid copper for my ground wire.
  • Does that sound correct for the ground wire size?

Dexter W.

Copper Ground Wire for a Workshop Circuit

Electrical Question Answer: Hi Dexter - Great Electrical Repair Question!

Workshop Sub-Panel
NOTE: This workshop will have a sub-panel installed as described below:

  • The #8 Copper ground wire for your workshop circuit should be fine.
  • I would suggest that you bring your #4 wires into a small sub-panel, preferably through a main breaker disconnect.
  • Make certain that you are bonding your grounds separately from the neutral because this will be a panel being served from away from your main service.
  • I suggest installing GFCI protection for your receptacle circuits in the workshop environment.

More about Electrical Sub-Panels

Follow up from: Dexter:
Thanks Dave!
I actually got with a local Electrician to do the workshop.
I'm into Electronics Engineering but Electrical is a little different and I couldn't remember the rule of thumb for ground wires.

Thanks again, you offer a great service.
Dexter W.


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