[TCML] top load and photography (tripod grounding)

Peter Terren pterren at iinet.net.au
Tue Mar 4 16:21:28 MST 2008


In truth I rarely push the on button these days.  I use the standard or long 
range IR remote to avoid camera shake.
If I am working alone then I am also controlling the variac and am grounded 
to the metal handle but this is well out of harms way. If I am using the 
camera manually then I will be behind the camera and tripod and there will 
be very little pickup of HV from my body.
Peter
www.tesladownunder.com

----- Original Message ----- 
From: "S&JY" <youngs at relia.net>

> Peter,
>
> There is still the danger of you acting as an antenna, so that when you
> touch the grounded camera the difference in potential between it and you
> could be enough to damage the camera.  Wearing a ground strap connected
> through a string of a dozen or so 1 meg resistors to ground, or holding 
> onto
> the tripod with one hand, would make your body potential be closer to that
> of the camera, thus avoiding damaging "tingles".
> --Steve Y.
>
> -----Original Message-----
> From: tesla-bounces at pupman.com [mailto:tesla-bounces at pupman.com] On Behalf
> Of Peter Terren
> Sent: Monday, March 03, 2008 7:46 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] top load and photography (tripod grounding)
>
> That was me. I do it because I was sometimes getting a little tingle when 
> I
> touched the camera when I am standing behind it suggesting the camera is
> above earth potential. I don't want that voltage sparking onto the screen 
> or
>
> eyepiece or plastic on button which could damage the camera.
> If you are trying to avoid "unseen leaders" then you are expecting the
> camera to be floating at many thousands of volts. Not safe at all.
> Secondly, if there was a camera strike while I was holding the camera (I
> don't get that close), then I would be protected and not the path to 
> ground.
> I stand by my decision to earth the tripod.
>
> Peter


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