Wiring Diagrams for Multiple Wall Outlets

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This page contains several diagrams for 2 or more receptacle outlets in one circuit. Wiring for multiple ground fault circuit interrupters (gfci) and standard duplex receptacles are included with protected and non-protected arrangements.

Wiring Multiple Outlets Using Terminals

wiring diagram receptacles in a row

In this diagram wall outlets are wired in a row using the terminal screws to pass voltage from one receptacle to the next. In this diagram, multiple receptacles are connected together using the device, instead of a pigtail splice as shown in the next diagram. Using this method, any break or malfunction at one outlet will likely cause all outlets that follow to fail as well.

Wiring Multiple Outlets With Pigtails

wiring diagram for a row of receptacles

This diagram shows the wiring for multiple receptacles in an arrangement that connects each individually to the source. All wires are spliced to a pigtail which is connected to each device. This wiring allows for voltage at each device independent of the other outlets in the circuit.

Double Receptacle Circuit

diagram for a double receptacle circuit

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

Wiring Multiple GFCI's

wiring diagram multiple gfci receptacles

In this diagram multiple ground fault circuit interrupter receptacles are wired together using pigtails. Two-conductor cable is run between gfci's, and the hot, neutral and ground wires from the source are spliced to the line terminals at each device. The load terminals are not used and each device provides its own, single-location protection.

Double GFCI Receptacles

wiring diagram gfci receptacles

Here GFCI's are wired to a double-pole circuit breaker with the source split to provide 120 volts to two sets of receptacles. The neutral from the source is shared by both sets. Single-location protection is provided by each receptacle.

Multiple Duplex Receptacles and a GFCI

wiring diagram for a gfci and multiple duplex receptacles

Here a gfci receptacle is added at the end of a row of duplex receptacles for single-location protection. The first outlet is connected to the source and 2-wire cable runs from box to box. All wires are spliced with a pigtail at the devices to pass current from one to the next. The load terminals on the gfci are not used and it does not protect the other receptacles in the circuit.

GFCI to Protect Multiple Duplex Receptacles

wiring diagram of a gfci to protect multiple duplex receptacles

Here one ground fault circuit interrupter protects multiple duplex receptacles coming after it, known as multiple-location protection. Two-wire cable runs from the gfci to all the following receptacles. The line terminals on the gfci are connected to the circuit source and the load terminals are connected with a pigtail splice to each of the following receptacles. This keeps each duplex connected directly to the gfci.

–In these wiring diagrams, the brass colored terminals represent the hot side of the device and the silver colored terminals represent the neutral side. Ground wires and terminals are in green, including a green dot representing the builtin grounding terminal found in most metal outlet boxes.

–By code, the number of conductors allowed in a box are limited depending on box size. Conductors include wires, devices like switches and receptacles, and some other metal parts. Check here to calculate the number of conductors allowed in a box before adding new wiring, etc.