I wonder if anyone can explain this for me. I've just replaced a light switch in the house and noticed that the new one gave a very very slight funny feeling in the finger tips when run across the metal front panel. I immediately removed power from that lighting circuit to investigate it was wired correctly, as indeed it was. I replaced the switch with an all plastic one as a precaution until I can explain what was happening.
This may or may not be related to the problem, but is my query for this forum. I have a Megger non contact voltage detector pen. While checking the light switch during the replacement above, I noticed that I get a positive detection reading on the pen from around 15cm away from the socket. In fact the electric field is so strong that I am able to follow where the cable runs up inside the wall. No other light switch or plug socket i have tested so far gives such a strong reading. Generally I have to have the point touching the switch/socket to get a live reading.
From experience, can anyone explain what is going on here?
Thanks,
Rob