The Essential Guide to Wiring a Switch and Outlet Combo

Having electrical outlets in your home is necessary for powering everyday appliances and electronics. There are certain situations, however, where you may need more than just an outlet, such as when you want the outlet to be switched on and off with the flip of a switch. In these cases, wiring a switch and outlet combo, also known as a duplex device, is the best solution. This type of outlet is ideal as it makes wiring simpler, taking up less space and reducing the need for extra wiring components.

In this guide, we will provide a detailed look at switch and outlet combination devices, including what they are, how they work, and how to wire them. We will also detail some of the common codes and safety regulations that must be observed when wiring a switch and outlet combo.

What is a Switch & Outlet Combination Device?

A switch and outlet combination device, also known as a "duplex," is a single unit comprising two separate functions: a light switch and a standard electrical outlet. It is a single device with two distinct functions, but both share the same power supply. This means that if you turn off the switch, the electric outlet will also be turned off.

The benefits of using a combo device are numerous. Not only does it save space by eliminating the need for two separate components, but it also simplifies the wiring process. For instance, if you wish to install a light switch and an outlet, you would normally require two separate boxes, plus additional wiring. With a combination device, the number of connections is reduced and the components are simplified.

How Does a Switch & Outlet Combo Work?

When a switch and outlet combo is installed, the power flows from the circuit breaker to the switch and then to the outlet. The power is always connected to the switch, even when the switch is in the ‘off’ position, so if the switch is moved to the ‘on’ position, the power will flow through the switch and outlet. The outlet will remain ‘on’ until the switch is moved back to the ‘off’ position.

When wiring a switch and outlet combo, it is important to use the correct wiring configuration. Most combo devices come with wiring diagrams that explain how the wires should be connected. Generally speaking, the two wires from the switch are connected to the black and white wires from the outlet. The ground wire should be connected to the ground terminal on the outlet. Additionally, a pigtail wire is usually used to bridge the two wires from the switch.

Common Codes and Safety Standards for Wiring a Switch & Outlet Combination Device

Safety is paramount when wiring a switch and outlet combo. Failure to follow the necessary codes and safety regulations can result in serious injury. It is important to research the applicable codes before beginning the wiring process.

Most areas have rules and regulations that specify the minimum gauge of wire required for the various components. The outlet must be properly positioned and securely screwed into the box, while the switch must be securely attached to the box as well. Additionally, the wiring must be secure and the circuit must be protected with a ground fault circuit interrupter (GFCI).

Finally, it is important to ensure that the switch and outlet combo is compatible with the existing wiring in terms of voltage and amperage. Many combos are designed to operate with either 30-amp 110-volt or 50-amp 220-volt circuits. It is essential to check the compatibility of the device before installation.

A switch and outlet combo can save time and space when installing new electrical outlets. By following the necessary codes and safety regulations, the installation process will be much easier and safer.

Eaton 15 Amp Tamper Resistant Commercial Duplex Switch Outlet White In The Electrical Outlets Department At Lowes Com