Recent content by gen x

I write wrong, we have galvanized steel strip all the way to the transformer, so that is excelent grounding

case 2 in this link, https://electronics.stackexchange.c...ring-fault?noredirect=1#comment2028722_763901

@Averagesupernova They claim in case 2, rcd will not trip.

in comments members transistor and andy aka write rcd will not trip, because there is no current leak to the earth... I dont understand their logic at all...

To me,it is crystally clear that will trip, but members with highest reputation scores at stack exchange, tell that RCD will not trip, so I check here.. I will not write a link because you already told me that you dont comment other opinnions..

@Averagesupernova @Baluncore rcd will trip,for case 2 as well?

1) If I take hot and neutral wire from 230V AC socket and connect to external RCD that has one wire parallel to it, and connect to 2kW heater, will this RCD trip? 2) Will RCD trip if this is AC floating supply instead hot and neutral wire? I interested will one wire parallel to RCD couse...

Why is 150V on ungrouding(flaoting) system? Doesnt have to be zero volts?

Yes low resistance of earth is important but in pratice, when hot wire touch metal case, 99% of current return via neutral as it explained below, I think it will be dangerous if that link dont exist and we rely only on earth as return path. Do you agree?

In my country(EU), we have TN-C-S and TN-S system, every house must have earthing with minimum 15m long galvanized steel strip buried into soil, this strip is connected to steel rods stuck deep into soil. Only after the inspection examines the grounding, you can get a connection permit.

What is good primary protection and good construction?

Of course it wasnt self revealed, because it didnt have RCD, if it had it will trip. For this case earth is not needed to RCD trip.

@Averagesupernova Do you agree with his example why we need earth? I don't, because if his case has RCD, it will trip. https://electronics.stackexchange.com/questions/534038/is-ground-connection-in-home-electrical-system-really-necessary

But you can't guarantee at any isolated system that will remain isolated to the earth, here connection to the earth we treat as fault? So this is fault case?

Why my diagram from post #15 without earth electrodes 1 and 2 is not isolated system?