Efficient Shop Wiring

A single cable provides 120-volt and 240V service.
By Bruce D. Wedlock
Pages: 82-85

From the October 2005 issue #150
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Every article I’ve seen describing the wiring of a shop for both 120 volts and 240V uses separate cables for each voltage, which is a signifi cant waste of time, effort and cable. Here I describe how a single cable can be used to provide both 120V and 240V service to a single two-gang wall box.

For many home woodworkers this wiring method is an easier, less expensive way to add 240V service to an existing 120V shop.

I describe only the connection scheme, and appropriate plugs and receptacles here. You should consult one of  the many home wiring books carried at home centers for basic wiring instructions. I strongly suggest those inexperienced with electrical wiring practices (or those who aren’t up-to-date on their local electrical codes) to contact a licensed electrician instead of attempting this on their own. Wiring requires a certain expertise.

From the October 2005 issue #150
Buy this issue now