Wiring Diagrams for Multiple Receptacle Outlets

Wiring Diagram for Dual Outlets. Here 3-wire cable is run from a double-pole circuit breaker providing an independent 120 volts to two sets of multiple outlets. The neutral wire from the circuit is shared by both sets. This wiring is commonly used in a 20 amp kitchen circuit where two appliance feeds are needed, such as for a refrigerator and a microwave in the same location.

Multiple outlets: To wire multiple outlets, follow the circuit diagrams posted in this article. Multiple Outlet In Serie Wiring Diagram : For wiring in series, the terminal screws are the means for passing voltage from one receptacle to another. Any break or malfunction in one outlet will cause all the other outlets to fail.

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A common misconception when doing receptacle wiring is that, when you daisy-chain them in a circuit, you're wiring them in series. You're actually wiring them in parallel, and that's a whole different thing. Each device in a parallel circuit receives electricity independently of the others, so if one of them fails, the others stay on.

Electricians hardly ever wire outlets this way, but it's good to know about it because it gives you near 100-percent assurance of circuit continuity. It's a good way to wire a GFCI outlet if you want outlets after it in the chain to stay on when the GFCI trips, but be aware that those outlets won't have ground fault protection.

Here we compare wiring an electrical receptacle in series or "daisy chained" (the most-common practice) with wiring receptacles in parallel on an electrical circuit. Wiring in parallel gives greater reliability to the devices on the electrical circuit, but larger electrical boxes and more wiring connections are required.

GFCI Receptacle in a Series with an Unprotected Outlet. This diagram illustrates the wiring for multiple ground fault circuit interrupter receptacles with an unprotected duplex receptacle at the end of the circuit. The load terminals on the gfci are not used and the last receptacle is wired directly to the circuit source.

The load terminals can be used to extend wiring to additional regular receptacles beyond the GFCI, which allows them to also enjoy GFCI protection. However, should the GFCI go bad, then all the connected downstream outlets will also cease to function. This section of the circuit, then, is an example of wiring in series.

This wiring is also known as series wiring of outlets which is only acceptable in case of AFCI or GFCI. Wiring Dual Outlets from 240V Source for 120V In this wiring, the first and 3rd outlet hot terminals are connected to the Line 2 (Blue) and the second and last outlets hot terminals are connected to the Line 1 (Red).