February 16, 2019
Hi, I have a 3-axis AC Magnetic meter and detected very high levels of AC Magnetic Fields (10-20 mG) close to my electric meter, and still generally elevated levels in my living room (3 mG). I suspect the source of the radiation is from the wires running into my meter (as it’s just as high on the second floor on that side of the house). I tried shutting off my main circuit breaker to no effect. Should shutting off my main circuit breaker have eliminated any AC magnetic fields? I do however have a semi-attached neighbor whose electric meter is also situated at the same location. The AC Magnetic levels fluctuate every couple minutes, and they were much much lower (sub 0.5 mG in my living room) during the summer. Could my neighbor’s furnace or heater cause this issue? Can this be caused by the street service drop line (the wire that connects my house to the poled wires in the street) that runs into my house? but if I wasn’t drawing current, that service drop wire shouldn’t have a field, should it? Please help with any pointers you could give? I’d prefer not involving my neighbor until I have a better idea. thank you!
August 17, 2014
Hello EMF-Q and welcome to the forum. Magnetic fields are caused when current is flowing. If wiring is correct there should not be any magnetic fields from the wiring, but some appliances can generate significant magnetic fields. Since magnetic fields travel through almost any medium (including walls) they are very difficult to screen , and it is possible that a field from a neighbour’s house or from a drop line could affect yours if it is strong enough.Elevated magnetic fields can point to a wiring problem of some kind. A meter should be able to help in identifying any problematic appliances. There may be info on the main site here or on some of the Building Biologists’ sites about how to discuss these issues with an electrician. Good luck!