From: "Da Man"
References: <3E13F782.6ECB3F2D@sympatico.ca> <3E14D73C.ED5DF392@sympatico.ca> <firstname.lastname@example.org> <85jvHtBcmLF+EwdQ@jmwa.demon.co.uk>
Subject: Re: battery operated neon light please help if you can
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Date: Fri, 03 Jan 2003 07:30:57 GMT
NNTP-Posting-Date: Fri, 03 Jan 2003 03:30:57 AST
"John Larkin" wrote in
> On Thu, 2 Jan 2003 22:13:48 +0000, John Woodgate
> >I read in sci.electronics.design that Frank Bemelman
> > wrote (in <3e14aed8$0$37205$1b62eedf@news
> >.euronet.nl>) about 'battery operated neon light please help if you
> >can', on Thu, 2 Jan 2003:
> >>What I always found interesting is that a 5 yr old kid can stack
> >>twentyfive 9V batteries in series, and kill itself. And it seems
> >>like a logical thing to do, at that age, almost the same as playing
> >>with lego-bricks etc.
> >They even fit together like Lego. But luckily, not many 5YO have access
> >to as many as 25.
> 225 vdc is unlikely to be lethal.
Wet fingers could make it quite leathal. Dry skin, and you may not even feel
I was changing all the recepticals in a house once, and had all the power
shut down except for one circuit so that the contractors could use their
saws, etc. I checked all the plugs with my cheap meter to insure the power
was off (120V 60 Hz) as I changed them, As I was doing the last room (the
one with some power still on), I kept getting a little tingle (as in
something you'd expect off a door bell transformer) sometimes when I touched
the wires. I was getting a stay voltage of ~18V on the wires, which can be
normal if nothing was plugged in (remember, there's probably over 100' of
wire connected in a circuit that can be capacitively, and inductively
coupled not to mention the nice possibility of it acting like a antanna). I
soon figured out that I only recived a tingle when I touched the normally
live wire and the neutral or the box (which is grounded). I went over to the
contractors chop saw, hit the switch to make sure it worked, and then stuck
my meter probes in the outlet. I got a 18V reading :-( - I then pulled on my
meter cables, and one stretched out like an elastic.
I once made the mistake of touching the wet drywall compound my father put
around an outlet. That F&*^ing HURT, and I was not grounded nor did I even
touch the terminal within a 1/4". Normally the drywall is just knocked off
once it drys.