Can a 3-pole main switch be used to switch 3 different lines at the same time? It's far from a 3-phase feed.

It was then necessary to control 3 different groups from another shield at the same time. Quickly turn on and off. It is not an emergency switch. Can these neutral and defense managers also match?

In theory, can the separate neutrals and protective conductors (belonging to 3 different groups) from the switchboard be connected together at this common main switch, the phases would still remain separate in the 3p-switch?

 

I'll admit I don't know electrical codes so someone else may have a different idea, but I would say if you just connect the line voltage to the switch you can easily do three circuits. Personally I would not tie all the neutrals together, but instead just connect the neutrals of each individual circuit together. I think to be code correct all earth grounds need to be tied together though.

 

Certainly a three-pole switch can be used to switch three separate lines, even three separate voltages, although the switch voltage rating must be high enough for the highest voltage present. Usually that is not an issue.