[time-nuts] Wavecrest DTS 2070

Charles Steinmetz csteinmetz at yandex.com
Mon Sep 9 23:49:33 UTC 2013


Ed wrote:

>You could grab the buss bar with your bare hands and not feel a 
>thing.  48V isn't high enough to be dangerous.

It all depends on the current drawn through the body (and especially, 
through one's heart).  Therefore, it depends on the point-to-point 
resistance through the body between contact points, and whether the 
current path runs through the heart.  Much (most) of that resistance 
is between the skin's surface and the flesh just beneath the 
skin.  If the skin is punctured so the contact goes straight to the 
flesh beneath the skin, or the contact patch is very large, or the 
skin is wet (especially with salt water), or a combination of the 
above, you can get lethal current with much less than the voltage 
normally required (i.e., dry skin, small contact points, etc.).

Best regards,

Charles







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