Romex 12-2 or 14-2 for the feed wire.
Note: Romex 12-3 or 14-3 wire has 4 conductors in it, three are sheathed (white/black/red) and one is bare copper (ground). Romex 12-2 or 14-2 wire has 3 conductors in it, two are sheathed (black and white) and one is bare copper.
Always use the same gauge of wire for the entire circuit, either 14-x or 12-x gauge.
– Two SPDT (single pole double throw) switches
– Wire Nuts
– Copper crimp tubes
Working with electricity might be life threatening. Consequently, when installing a 3 way light switch make sure you first turn power off to the feed line that may power the 3 way light switch. The feed line ought to be turned off on the circuit panel.
Instructions for Installing 3 way Light Switch
Step 1: Run a feed cable to the first light switch from the bottom of the switch box. This is effectively the ability feed coming from the circuit panel.
Step 2: Run another cable, known because the traveler between the primary switch and the sunshine fixture.
Step 3: Run another traveler cable from the light fixture to the second switch.
Step 4: A three way switch has a standard terminal at the bottom and two traveler terminals at the top. Consequently it is wise to have the traveler cables are available in from the top of the switch boxes.
Step 5: At the primary 3 way switch box, wire the black feed line to the common terminal which is on the underside right.
Step 7: Next wire the red traveler wire (again a “hotwire) to the left traveler terminal.
Step 8: At the primary switch box, attach the 12-3 white wire “neutral wireto the 12-2 feed neutral wire with wire nuts.
Step 9: Again, at the primary switch box, connect the bare copper ground wires together using lineman’s pliers. Twist the copper wires together several times and add a copper crimp tube over them.
Step 10: At the light box, again connect the bare copper ground wires together using lineman’s pliers. Twist the copper wires together several times and add a copper crimp tube over them.
Step 11: At the sunshine box, connect the red wires along with a wire nut.
Step 12: Again, at the sunshine box connect together with a wire nut the black wire coming from the primary 3 way switch box, and the white wire coming from the second 3 way switch box. Since you might be connecting a black “hotwire to a white wire that is typically neutral you will need to mark this white wire as now “hot To do that, attach a piece of black electrical tape on each end of the white wire that you connected to the black wire.
Step 13: At the second 3 way light switch attach the white wire (with the black tape on it indicating it is now used as a “hotwire) to the highest right traveler terminal.
Step 14: At the second 3 way light switch attach the red wire to the top left traveler terminal.
Step 15: Again on the second 3 way light switch, connect the black wire to the lower right common terminal.
Step 16: Again at the second 3 way light switch, connect together the bare copper ground wires. Twist the copper wires together several times and add a copper crimp tube over them.
Step 17: With the circuit wired up try to be left with at the sunshine box a white wire end (neutral wire) that comes from the first switch box, a black wire (hot wirethat comes from the second switch box, and a bare copper ground wire (associated with the twisted copper wires coming into the sunshine box from the 2 Romex cables.). These three wires then connect with the sunshine fixture. The ground wire connects to the sunshine chassis, and the black wire end to one among the sunshine fixture terminals, and the white wire end to the opposite light fixture terminal. After you have wired the light fixture attach it to the sunshine box.
Step 18: Secure the 3 way switches into their switch boxes and attach face covers.
Step 19: Power up the switch circuit, back at the circuit breaker panel box. Next, test the sunshine. If you followed these instructions perfectly you should have a properly working 3 way light switch.