Above 600 volts, the ‘rules’ change drastically. With contact accidents at this level, the amount of current and path through the human body can readily cause live tissue to be “cooked” from the inside out.
Medium- {and high-}voltage circuits demand a much higher level of care and “respect” and are much less forgiving of accidents.
There is a universal rule dealing with medium {and high} voltage —
NOT Grounded: NOT Dead. The seriousness of this issue for routine operations is evidenced in:
http://www.hubbellpowersystems.com/powertest/tips_news/pdfs_best/09-9501clamp.pdf [This message has been edited by Bjarney (edited 01-30-2004).]
