Post by jen on Sept 28, 2023 3:12:55 GMT -5
I'm not sure how a magnet would help with copper cables although one of those really stong ones when moved across a mains cable may induce a measurable interference.
Bad luck with the pipe. Normal detectors will not detect plastic. It's not something I am likely to come across as we have limited piping and I am reasonably certain where it runs.
After I got the tester home I did a quick check with it. It seems to work well and I was able to detect wiring, even isolating specific circuits by turning them on and off so it may be useful if we ever get a wiring problem. It's a vast improvement on the basic device I used to borrow. It appears to light up when it finds a cable and the light flashes when the power is running.
Use a magnet, such as a refrigerator magnet or a compass, and bring it close to the exposed wire. If the wire is carrying an electric current, it will create a magnetic field that will be detected by the magnet. The magnet will either be attracted or repelled by the wire depending on the direction of the current flow.