In this diagram power is taken from an existing wall outlet for a new switch and light fixture. Touch a prong from a two prong electrical tester to a terminal screw holding a black wire to the switch.
How To Add A Light
Add light to circuit. Examples include adding lighting underneath kitchen wall cabinets where the existing switch will be at the exact height of the new lighting or installing an outside light by routing the cable directly through the back of an existing switch box to the outside. The switch comes first in the new part of the circuit and new 2 wire cable is run to it from the outlet. Make sure the cable you use is the same gauge as the one powering the existing fixture. Wiring a new switch and light from an outlet. The tester wont light if the correct breaker is turned off. Or more sheathing visible inside the box.
From the switch new 2 wire cable is run to the new light location. There are various circumstances where it would be convenient to add another light to a circuit and connect that light directly to an existing light switch. Adding a light to a circuit an end of run fixture is one that goes after the existing fixture in the circuit. Start by mounting the fixture strap to the box. At the switch cut the cable about 12 in. Choose a place for the fixture install an electrical box and run a cable between the new fixture and the existing one.
Of sheathing from the wires and push the cable through the knockout leaving 14 in. Strip the ends of the wires and connect them to the fixture. Touch the remaining prong from the tester to any metal on the electrical box or switch. Remove the screws holding the wall plate to the switch on the circuit.
Gallery of Add Light To Circuit
