Thanks, we have already beat the "seperately derived system" to death lol it comes up when I try to explain to lay persons when they need a 2 pole versus a 3 pole transfer switch BUT I ALWAYS LOOSE THEM heck I almost loose myself lol It also has to do with how the genset is wired and whether its Neutral is bonded to case frame and if a GroundING Electrode is used etc etc just gets too complicated for non sparkies Ive found.....
Yep if the breaker trips that can save the conductors from meltdown and prevent a fire, but anytime a case/frame becomes de energized (if a hot shorts to case frame in a 3 wire system) Id say that could also sure save a life in given circumstances REGARDLESS of the "purpose" it tripped. Just semantics, Id agree its safer BOTH for the conductors (could prevent a fire which could save a life) PLUS maybe a life saver if a hot case frame is no longer hot..And for sure if the third wire GroundING conductor IS NOT IN PLACE and theres a short and little Johnny touches the saw/drill/appliance it can kill and would save his life if the wire was in place tripping the breaker so the case was no longer HOT YIKES
It boils down to the old song "... You say Potato I say Po Tato" the third wire GroundING Conductor can save the conductor and maybe prevent a fire (hey that can save a life you know) PLUS it can save a life by de energizing a hot case frame which Johnnny may touch !!!
Thanks again, LOVE this sparky chat even if others are bored to tears
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