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terry terry is offline
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Default Neon screwdrivers

On Apr 11, 2:51*pm, Peter Twydell wrote:
In message , Clint Sharp
writesIn message , Peter Twydell
writes
They do try to electrocute their users if they're the wrong ones. I
once had a 24V version for car use and a 400V (?) for domestic. Guess
which one I used to test a mains wire?

Well, some would say that was the user's fault as the 24v one wasn't a
neon but a bulb indicator (neons generally only work above 80-90V
unless there's significant radiation or strong radio signals around)
and the user should have known what tools he was about to use.


I was that user. Can't remember exactly what the 24V one was as it's
long been chucked out. It was very similar in appearance to the mains
tester, which was the problem. Just picked it up without checking.

I *have* learned a little bit about safety since then; it was 37 years
ago, after all.
--
Peter

Ying tong iddle-i po!


Hey you are right; I now recall once having a little screwdriver
tester that must have had 12 or 24 volt bulb inside and a lead coming
out top of the handle. Wonder where that is ................... maybe
in one of the vehicles ................... or the garage ..........
the boat .................. hmm!!!!

Back to a neon tester/screwdriver ..............; is not the reason
they will usually light up even if one is NOT standing in bare feet on
a wet floor, due to one's personal body capacitance to something (such
as mother earth!) which is nominally at zero volts? At least seem to
remember testing for 230 volts RMS in the UK doing that?
In North America etc. where nominal RMS to neutral/ground is 115 RMS
not so sure?