Metal dimmer switch

[lurchajn]

Is it normal to get a current flowing through a metal-faced light switch? I can't feel it to touch but, my little electrical-tester screwdriver lights up when in contact with the plate.

I have recently installed a dimmer switch with a metal facia. I use it to control a set of 3 x 20W 12v lights and it is designed for use with a low voltage system.
I have earthed the metal dimmer facia as directed by the instructions.

 

[AnonymousImport]

i know its late but if you are sure you have earthed your switch i wouldnt worry them screwdrivers are as much use as a chocolate teapot

 

[AnonymousImport]

If the neon indicator in your screwdriver is lighting, this indicates that there is a voltage present on the plate. The reason that you cannot feel any thing is probably because you are insulated from earth and the current flowing is very small, I note that you said that you had earthed everything. I'd be aliitle concerned about the efficiency of the earthing system. If your neon can detect a current flow, then your earth may be high resistance. Using a multimeter, measure the resitance of your electrical earth to a cold water pipe. It should read less than 1 ohm.