> A single insulation fault (live -> chassis) will put the chassis at line potential if PE isn’t connected.
As long as the other wire is not connected to ground, chassis being connected to one doesn't pose much risk.
Grounding either wire makes whole thing worse. If you ground the chassis and it's not connected to either wire it makes no difference. Once insulation on any of the wires fails and the wire connects with the chassis it becomes the neutral and ground at the same time and the other wire will shock you through ground even if you don't touch the chassis at that time.
I'm curious if GFCI would trip if you didn't have the whole thing grounded and just touched one of the wires...
I know that in normal setup GFCI detects if too little electricity goes back through neutral relative to how much goes through hot wire. Assuming nothing is grounded, would short, small leakage current when you touch one of the wires be enough to trip GFCI?
Does GFCI work both ways? If there was more current "comming back in" on the neutral than goes out on the hot would GFCI trip as well? Are the usual solutions worthless when you have just two free floating wires with potential difference between them but with no reference to ground?
Is there a code for high voltage mobile installations? It seems that EV and mobile home makers go mostly with their own solutions derived from first principles...
As long as the other wire is not connected to ground, chassis being connected to one doesn't pose much risk.
Grounding either wire makes whole thing worse. If you ground the chassis and it's not connected to either wire it makes no difference. Once insulation on any of the wires fails and the wire connects with the chassis it becomes the neutral and ground at the same time and the other wire will shock you through ground even if you don't touch the chassis at that time.
I'm curious if GFCI would trip if you didn't have the whole thing grounded and just touched one of the wires...
I know that in normal setup GFCI detects if too little electricity goes back through neutral relative to how much goes through hot wire. Assuming nothing is grounded, would short, small leakage current when you touch one of the wires be enough to trip GFCI?
Does GFCI work both ways? If there was more current "comming back in" on the neutral than goes out on the hot would GFCI trip as well? Are the usual solutions worthless when you have just two free floating wires with potential difference between them but with no reference to ground?
Is there a code for high voltage mobile installations? It seems that EV and mobile home makers go mostly with their own solutions derived from first principles...