The white wire of the romex going to the switch is attached to the black line in the fixture box using a wirenut. A switch loop single pole switches light dimmer and a few choices for wiring a outlet switch combo device.
Wiring Single Pole Light Switch Wiring Diagram
Wiring diagram for single pole light switch. The ground screw is for the circuit ground wire connection. Wiring a single light switch in the middle of a circuit. In this illustration you can see the red hot lead wires of the dimmer are connected to the inbound black wire from the electrical source the electrical panel and the black wire that goes to the light fixtures black wire which in this case is a white wire that has been taped with black electrical tape. Light switch wiring diagram single pole this light switch wiring diagram page will help you to master one of the most basic do it yourself projects around your house. Standard single pole switches do not connect to neutral circuit wire. The other terminal is for a second hot wire called a switch leg that runs only between the switch and the light fixture.
And this switch is pretty much right smack dab in the middle of the circuit with two switches before it and a few outlets after it in the circuit. Also included are wiring arrangements for multiple light fixtures controlled by one switch two switches on one box and a split receptacle controlled by two. A dimmer switch is wired the same way as a single pole switch. In this first example ill be wiring a one gang junction box that holds one single switch and that switch controls one single pendant light. Single pole switch diagram 2 this switch wiring diagram shows the power source starting at the fixture box. The switch leg brings power to the fixture when the switch is turned on.
Wiring a single pole light switch. This page contains wiring diagrams for household light switches and includes.