In this updated diagram 3-wire cable runs between the receptacle and SW2 to allow for splicing the neutral source through to the second switch box. Here the white is not used for hot but instead the extra red wire serves
The diagrams on this page illustrate connecting multiple lights in 3 way and 4 way switch circuits. Check below for more details about these circuits and some troubleshooting tips.
A 20 amp 120v duplex receptacle like this should be installed in a circuit using 12 awg or larger cable and a 20 amp circuit breaker. These receptacles are usually found in kitchen wall outlets where two branch circuits are
The neutral wire in this circuit is taken from the receptacle and spliced to the white on the new cable and to a pigtail that runs back to the receptacle. The hot is spliced to the black cable wire and
This is the oldest version of a wall receptacle that you will find. It lacks a grounding contact and the plug slots are both the same size. These devices did not make use of a ground wire and both plug
New 2-wire cable is run from the receptacle to the new light fixture. At the receptacle the wires are removed and each one is spliced to the new cable and back to the receptacle with a pigtail splice. At the
The following 3 diagrams show the wiring for a specially made dimmer that can be used in these circuits in place of either of the the 3 way switches or both. This arrangement allows for lowering the lights in a
When using this device for heavy appliances like washing machines and microwaves it should be connected to a dedicated 20-amp/120-volt circuit breaker. As of 2014 a GFCI receptacle is now required in a laundry room for the washing machine.
Here two switches are wired in the same box to control two separate lights. The source is at the switch box and a 2-conductor cable is run to each light. One source is spliced to each switch with a pigtail
A plug-in device that will detect the wiring configuration of an electrical outlet. Through a system of lights this tester will confirm a receptacle is properly wired as well as indicate a problem with the wiring and what the problem