Formidable Can You Wire A 3 Way Switch With 2 Wires

The first way of wiring uses a couple of two way light switches with a 3 wire control.

Can you wire a 3 way switch with 2 wires. A three conductor cable with a ground is then installed between the two 3 way switch boxes. There is a way to wire a light fixture controlled with two 3 way switches using only 14 2 cable. Regardless of what 3 way switch wiring diagram you re following you ll need to use a 3 wire cable to connect the two 3 way light switches.

The l1 terminals of both the switches are connected to line or phase or live of the ac supply. White black and red plus a bare ground wire. I think that the most common method used to wire a set of 3 way switches is to bring the two wire line cable into one switch box and bring the two wire load cable into the other switch box.

Anyway when i did this i removed some wires that were now extraneous because we no longer had 2 extra walls. Connect the wires to the new 3 way switches with ground screws using one of the two wiring diagrams fig. You can observe in the schematic that both the com terminals are connected together.

There are were 3 switches that control the same 3 lights 2 can lights in the upstairs hallway and one chandelier on the stairway ceiling one switch at the bottom of the stairs one at the top and one down the hall. This makes sense. So what you should see if you have correct 3 wire electrical cable romex is a black power white neutral and now a 3rd red wire.

Two way switches are single pole single throw spst with two connection wires and are wired with 12 2 or 14 2 cable between the switch and fixture. The 14 3 cable has three insulated conductors. After replacing the switch with a new 3 way switch the light switch at the bottom of the stairs has to be on for the other two to function.

The following is the simple schematic of a three wire 2 way switch wiring. Standard 2 way switch wiring. Description power at one end switch leg at both ends with a 2 wire 14 2 or 12 2 used as travelers and a 2nd 2 wire used as a switch leg.