Electrical 101

Dedicated Circuits

A dedicated circuit has only one device, usually an outlet and supplies power to one load only. This type of circuit is normally used for high wattage appliances.

Dedicated Circuit Wiring

In the diagram below, a 3-wire NM cable supplies line voltage from the electrical panel to the first outlet box. The red wire (line “B” phase) connects to the first outlet only. The black wire (line “A”phase) connects to the black wire of an NM cable that travels to the next outlet box. The white (neutral) wire connects to the first outlet and the 2 wire NM that travels to the next outlet. This repeats until the end of the chain.

Diagrams shown on this page are simplified for clarity. Electrical outlet boxes can have numerous NM cables going in and out. See Actual Switch Box Wiring Diagram.

Outlet ground connection diagram is shown separately.

Dedicated Circuit Wiring Diagram

Dedicated Circuits

Switched Outlet Wiring

Travel Plug Adapters

Replace an Electrical Outlet

Push-In Connections on Switches & Outlets