Mains Tester screwdriver

[PJK]

Hi I am hoping for some advice and to see if anyone is aware of this issue.

I was using a mains 240volt mains tester screwdriver ( the clear type, no battery, you just put your finger on the end cap to see if the screwdriver lights up, indicating 240v present). I was getting an indication on the earth wire of a light switch. When connected to the back box earth terminal the RCD did not trip and the RCD is working correctly. I used a Meger1552 to test the cables insulation and tested between all lines, switch wires and earth, no problems indicated. I tested the voltage reading on the earthwire and it was nil. I rewired the switch to the ceiling rose (it was easy to do) with new cable. The earth of the new cable also read an indication on the mains tester screwdriver yet it was definitely not shorting and was not connected at either end etc., Seems I was getting some sort of feedback through my body which caused the screwdriver to light up. Full PIR done on the installation and everything is fine.
Any comments would be welcome.

 

[RETIREDSPARKY]

Suggest you read GS38 and get yourself an approved voltage indicator. The mains tester you have descibed has been banned for some years.

 

[supasparxs]

Totally agree with all above. My assessor nearly failed me for having one.
What about the non-contact type, happy with it so far or am I being lulled into a false sense of security?

I disagree.

I think a volt stick is useful as an indication.
but it can't replace a contact tester.
even these aren't trusted as we buy proving units

Iif you find something dangerous and want to take a photo showing something was left live and dangerous

 

[kung]

Back in my apprentice days i used one to test a cable in the loft it showed dead and when i touched it almost put my foot through the ceiling as it WAS live ! ever since i have never used one only for kids to undo batt covers when they replace them.

 

[daver]

I always use one, to test the static in my new wool jumper. Works a treat.

 

[rangersgary]

I can't believe a spark even own's one!

Bin it and get yourself a proper insulated pincer!!!

 

[scotsparky]

I disagree.

I think a volt stick is useful as an indication.
but it can't replace a contact tester.
even these aren't trusted as we buy proving units

Iif you find something dangerous and want to take a photo showing something was left live and dangerous

volt sticks can be a usefull indication but thread is about mains testing screwdrivers with the metal tip

 

[Bromd123]

I'd bin both just to be SAFE lol, had bad experiences with both of them.

 

[High Tower]

Volt sticks are brilliant for showing up dropped neutrals, they dont need a complete circuit like conventional testers