ask the electrician
Electrician Training Electrical Certification wiring recessed light fixtures Electrical Wiring Electrical Troubleshooting and Electrical Repairs wire outdoor light fixture Home Electrical Wiring Diagrams
wiring home generator and transfer switch wiring a 220 volt range cord outlet Wiring for GFCI Outlets Wiring Outlets and a Switched Outlet Wiring and Installing Ceiling Fans and Remote Controls wire dimmer switch wiring diagrams for switches wiring a dryer cord and 220 outlet circuit breaker panel
Electrical Wire and Cable

220 Volt Circuit to 110 Volt

electrical circuit wiring repair By
Summary: Electrical Circuits Question:
I have a 220V outlet that is only used in the summer to run a window A/C unit. Can I tap off of this outlet to make a 110v outlet right next to it to run a small electrical heater in the winter? How do I go about this?

Converting a 220 Volt Circuit to 110 Volt

How to Install and Wire a Sub Panel

Helping You Wire it Right
Check out my YouTube Channel, and Subscribe!

How to Convert a 220 Volt Circuit to 110 Volt

I have a 220V outlet that is only used in the summer to run a window A/C unit.

Can I tap off of this outlet to make a 110v outlet right next to it to run a small electrical heater in the winter?

How do I go about this?

P.S. the 220v outlet is not recessed in the wall.

Randy C.

Hi Randy - Great Electrical Repair Question!
First off I'm assuming this 220 volt AC circuit is a 15 or 20 amp circuit.

The 220 volt circuit for the AC unit most likely does not have a third wire dedicated as a neutral.

Usually a 2-wire romex with a ground wire is run to the AC receptacle and the white wire is identified with black or red electrical tape designating that it is a hot wire. Because the ground wire is usually un insulated it can not be used for a current carrying conductor such as a neutral wire.

This circuit can be converted to 110 volt and a 110 receptacle can be installed during the winter months in place of the 220 volt receptacle, here's how:

To convert a 220 volt circuit to 110 volts - First the circuit must be positively identified back at the source panel.

One of the power legs attached to the 220 volt circuit breaker, usually a white wire (as described above) needs to be disconnected from the breaker and attached to the neutral buss.

It would be best to place a one-pole circuit breaker in place of the two-pole breaker, inserting a spare breaker or spacer in the remaining space, then be certain to label the circuit for it's intended use.

This is not the most convenient way to do this but it will work. The problem is that this procedure will need to be reversed in the summer time if you decide to use the air conditioned again.

The idea of initially installing a dedicated 4-wire electrical circuit which could then be used as a combination of 1- 220 volt receptacle (for the AC in the Summer time) and 2-110 volt receptacles ( Heater in the Winter time) would be great.

I actually do this when installing power for window AC units because I know sooner or later these units may require a dedicated neutral wire just like the electric dryers and the range circuits.

As mentioned above, if this circuit is larger than 20 amps there will be a few more items to address, so please let me know.

Electrical Wiring Tips for Home Electrical Wiring Projects

Tripping Circuit Breaker, Outlet at a Wall Switch, Light Fixture without a Ground Wire, Help with Home Electrical Wiring Projects.

See more House Wiring Videos from Ask The Electrician:

Home Electrical Wiring Videos

Learn more with my Home Electrical Video Course:

Basic Home Electrical Wiring by Example

» You Can Avoid Costly Mistakes! «

Here is How to Do It:
Wire It Right with the help of my Illustrated Wiring Book

Great for any Home Wiring Project.

  electrical wiring  

Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
Handyman, Handywomen, and Electricians
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.

« Electrical Wiring 220 Volt Heater Wiring Circuit »