3 way light switch issues
I had a house built and recently, I've been putting ceiling fans in each room. Once I got outside on my back porch, I noticed that the Light switch was putting out 64volts, while it was off. The fan switch worked fine. I went and checked both switches and it was always 120v or 64v, no matter which way it was flipped. The light switch had is on a 3 way switch.
I called the home builder and they sent someone out who gave me this spill that someone had run hot wires to both switches and had the traveler running across, which was causing the issue. He said he capped the hot wire off the secondary switch and it should be working now. I, for some reason, took his word for it and left it as is. I've been busy so it's been a few week, so when I went up to test it to find, It doesn't work the way it was, but in a more weird manner.
Now if I turn both the light and fan off from the primary, both wires are not hot, thats good. When I turn them both on, both are 120v. However, if I turn 1 on and the other off, the one that is off will have 64v, while the one on is 120v. No matter which one I turn on, if the other is off, it does this!!
What the hell. How does one switch change the voltage in another switch that isn't part of the 3 way? They just sit side by side, thats all. I've verified that nothing is touching, so I'm a bit confused, but I'm not an electrician either, so I'm in the dark.