Baluncore, thanks! I asked someone a while ago about a separate ground. They said it would require a very large wire going to it, since the copper pipe is a large conductor. They didn't think it would change things much. I may try a separate (empty) copper pipe at a distance from the first as...
I wish I knew what the load is and where it's coming from. The pipe outside the building is carrying this load. It may be coming from other buildings, or from one of the 4 units in my building. I've shut off all the breakers, one at a time in my unit with no change in the mag field. The unit...
To Tom G. and the rest of you folks -my sincere thanks.
About 4 years ago, we got a plumber to disconnect the water pipe outside the building for a few minutes and checked the magnetic field before and after it was disconnected. It did drop the mag field down close to zero right next to the...
Putting a dielectric piece of (plastic) pipe in the copper line to stop the stray current from going through the water pipe is ok if it's 10' away from the building. That 10' allows the pipe to maintain its role as an electrical ground. That's according to the electric code from what I...
Tested with a meter during the summer. (With a clamp meter around the pipe.) It was up to 10 or 11 amps sometimes, but only about half a volt. Con Ed measured it also. They said it was "safe". If you read enough about EMF's, you know they're full of it. I've read that they don't allow their own...
It's in the pipes in the neighborhood. Con Ed is too cheap to make the neutrals big enough, so the excess goes thru the pipes. I'm in a condo unit (4 units in one bldg) & have the mag field going thru a 1" copper pipe that goes right under my LR dining Rm floor. The field at floor level can go...
I appreciate the responses from you guys. I'm out of my depth here. What I really want to do is counteract an already existing mag field coming from a water pipe. It's due to the neutrals not being able to handle the current so it goes into the water pipe. It causes one badass mag field that I...
I want to wrap no. 16 copper wire around 1" copper pipe to create a mag field. At 120v / 1 amp AC, how many turns will I need to get about 5 milligauss near the pipe?