<img class="lazy" height="1" width="1" style="display:none" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%201%201'%3E%3C/svg%3E" data-src="https://www.facebook.com/tr?id=376816859356052&amp;ev=PageView&amp;noscript=1">
 In Techniques

We may receive a commission when you use our affiliate links. However, this does not impact our recommendations.

FIGURE A: Here are 120V (left) and 240 volt (right), 20-amp receptacles.

A single cable provides 120-volt and 240V service.

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 significant 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.

FIGURE B: Here is an example of the 120V/240V wiring for a two-gang box. Leave at least a foot of cable in the box to allow for the accordion folding so the receptacles can be easily connected to the wires and then pushed into the wall box.

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.


 

By registering, I acknowledge and agree to Active Interest Media's (AIM) Terms of Service and to AIM's use of my contact information to communicate with me about AIM, its brands or its third-party partners' products, services, events and research opportunities. AIM's use of the information I provide will be consistent with the AIM Privacy Policy.


Start typing and press Enter to search