unforetely i deal with med voltage system like 4160 system and anytime work on it use live tester to verify to make sure line are dead then ground it out. the reason to ground it because it can hold :voltage" charge like capatior does and i use lock and try test and double check the sources like air, electric , hydruallic , etc etc to make sure it is off in postive way

merci marc

Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)