infinity said:I agree with Marc, this is simply a disclaimer to limit the manufacturers' liability. Most guys I know would only use them because of their working live potential.
The missing part of the equation is that how many electricians do you see who continuity check their circuits before they connect them? Not many. So you "hot tap" a shorted circuit with one of these, probably onto a nice fat conductor at 277 volts with a big circuit breaker ahead of it (plenty of available fault current)....voila!...instant fireball. Hey, people should have the freedom to kill themselves.