Wiring a 3-prong dryer outlet with 4 wires is a common electrical task that can be completed in a few steps. This type of outlet is typically used for electric dryers, which require a 240-volt power supply. The fourth wire in the outlet is a ground wire, which provides a safety path for electrical current in the event of a fault.
To wire a 3-prong dryer outlet with 4 wires, you will need the following tools and materials: