Half of circuit works other half doesn't, until I use ground wire instead of neutral with black wire. Why does white wire read only 53V? All wires are hooked up the way they were previously and there was no issue. Everything worked. Black to black, white to white and grounds to ground. I did notice when I removed the ceiling bath fan that one white wire was twisted with a ground. The fan is still not installed and the lights are not working until I use the ground wire and black wire to power the circuit. I have yet to find where the ground and neutral are spliced or tied together. Should I be looking before the circuit half working, or after? Any thoughts?