Light Switch Loop Wiring Diagram. An example of installing a new switch loop is when a light fixture originally switched with a pull chain is converted to use a wall switch. The latter cable is referred to as the switch live (s/l) provides.
Image showing wiring diagram of a loop at the light circuit light switch wiring electrical diagram electricity. The wiring consists of two red wires + one red loop, one black wire and earth. Also included are wiring arrangements for multiple light fixtures controlled by one switch.