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Old 04.02.2019, 22:21
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Electrical standards

Anyone out there an expert on Swiss electrical regs? I have a house from about 1970 with a few electrical issues. It has a 48kw 3ph supply, no fewer than 30 MCBs in the main panel, 15 more ground floor and 7 more upstairs. Iíve been replacing some with dual pole RCBOs and found a few issues. Some shared neutrals (probably from additions over time) and a couple of outside outlets with ground directly wired to neutral with a factory bridge. Pretty horrific. Is that still considered acceptable? Also nothing is labelled and there is no consistency to the colours.

All these seemed to pass inspection. What exactly are the rules on older installations and on who is permitted to make modifications/improvements to them?

Garage, greenhouse, grotto, outdoor circuits all seem pretty sub par.
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