![]() Each coil would be wired in parallel (across) the light fixtures. The relays would have coils sensitive to the AC line voltage applicable to your area. In the mean time, if anyone gets what I'm saying, feel free to add some illustrations.Ī second option that you have is to add a pair of relays driven one each from the two lighting circuits. Sorry I'm not illustrating this, I need to take some time to learn how to add drawings here, I know it's fairly easy. Either pole powers the fan, but the separate coils keep each circuit isolated from the other. While such a switch is common in electronics, I don't know if such a device is available for house wiring.Īlternately, a double pole relay could be used to switch the fan. To have only one light go on with a particular switch, you need a pair of single throw-double pole switches where one pole of each switch goes to it's associated light and the other pole of each switch both go to the fan. ![]() ![]() This can be confusing as one switch may not always turn off the lights. Alternately, wire two standard switches in parallel so one bath user would not accidentally turn off the light for the other. This is just a standard 3-way switch circuit. It can be done if both lights and the fan all go on at the same time. But I look forward to being proven wrong. ![]() Powering the fan will backfeed power to the other light that was supposed to stay off. I don't think it's possible to individually control two different lights while controlling a common fan using conventional house wiring devices. ![]()
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