![]() I have read the manual and purchased a 3 way kit, but I haven't put it in the wall, so I'm not 100% sure on Case A. The GE/Jasco switches I bought use an add-on switch for the second switch, I couldn't tell wether or not the treatlife switches are similar.ĬAVEAT: I've put a few single switches in the wall already. Both switches will need neutral (to keep the computers in the switches on). You can make them both control the same set of lights through some sort of automation. At the second traveler, the common is connected to the black of another 12/2 that goes to the light. The travelers go to the second 3-way on the 12/2. If each switch controls a separate set of lights you'll want 2 of the single switches. If one connects the hot to the first common, the neutral goes up to the light on a 12/2, and the black conductor in that 12/2 isn't used. A 3 way switch is a switch that controls a light from two. A box that holds one device would be a single gang box, a box that holds two devices would be a two gang box, a box that holds three devices would be a three gang box. At least one of the two switches will need a neutral (to keep the computer in at least one switch on), possibly both, see caveat below. Gang usually refers to how many devices (plugs or switches) fit into a given box. The physical switches have a traveller wire between them that allows both switches to operate the same set of lights (switches at the top and bottom of stairs are generally setup like this, I can turn either switch on and the lights come on, turn either switch off and the lights go off). They can NOT be used interchangeably.Ĭurrent physical switches both control the same set of lights (couldn't tell from the description) If so, you'll likely want the 3way. A more positive way to identify a 3-way switch is to look at the body of the switch and count the number of screw terminals: a 3-way switch has three terminal screws plus a ground screw. (In a house built in the 1930’s, I doubt it unless it was completely renovated and re-wired completely in recent years.)Īlso ground and neutral are NOT the same thing. Before even looking at hardware you need to know if you have neutrals available. Neutral requirement is an entirely different matter. (4-way = used in combination with 3-way switches when the same light can be controlled by 3 or more switches.) The classic example situation is a hallway light, switch at each end-both controlling the same light. No additional switches can control the light.ģ-way = two switches control the same light and can be used interchangeably. Single pole = one single switch controls the light. Technically “2-way” isn’t a term that’s used, it’s best to stick with the two standard terms “single pole” and “3-way”. Three-way and four-way switches make it possible to control a light from multiple locations, such as the top and bottom of a stairway, either end of a long. First, Both switches you linked require neutral.
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