Originally Posted by oilseal
Are you sure that the wire in the plug actually goes to ground when plugged in? Explain what your "non-contact voltage detector" is. If your motor runs on 220V it should have a two pole switch.
My voltage detector is one of those that you can trace along a wire or get it near a plug and it will beep and light up. But it doesnt tell me how much voltage is there.
The way i have the motor wired now is, wire from the wall has black and white wire. black goes to motor wire, then other motor wire goes to switch, then switch goes to white wire from the wall plug.
when using a ground, the switch would only turn off half of the voltage. The motor would still run on 110v. Which i know is not safe. So when i bypassed the ground the switch then would cut total power. I am not sure why this works like it does.
I am just affraid that i am getting a reading on the detector because the voltage is trying to ground itself, And when i get near the lathe its reaching out to find its ground. If i lay the detector on the table and move my hand away from the area it will not beeb. Its just when i get close it it.
The guy at homedepot told me that 220v needs a neutral wire for it to work . And he didnt believe me that it would even work at all with only two wires coming in from the plug. What am I missing. The lathe works great with just two wires. Do i really need to be concerned. The original wire that was from the factory only had two.