On Wednesday, July 12, 2017 at 10:34:09 AM UTC-4, Lenny Jacobs wrote:
On 12/07/2017 20:24, trader_4 wrote:
On Wednesday, July 12, 2017 at 9:45:37 AM UTC-4, wrote:

Gfre has brought up a few times now that you may have a main breaker that doesn't just trip on overload, but one that also trips if there is even a tiny ground fault. A ground fault is current flowing to ground instead of confined to the conductors. In the USA they are called GFCI breakers. Gfre says in Europe they are called RCD. If that's the case, then a current of just 30ma can trip it and you can get that from wet connections, outlets, etc. It's very common. Does that main breaker have anything that makes it look different? Markings? A test button?




RCD = residual current device

cute

m

And from the pics he provided, it looks like the bottom two are RCD,
because they have the neutral running through them. Funny thing here
is that with all the talk over days now about RCD/GFCI breakers being
involved, I haven't seen anything from the OP even acknowledging that
part of the discussion. It's almost surely the reason for the trips.

That's beyond my knowledge.

Well, you better learn or call an electrician, because it's central to
your problem. I tried to explain previously, RCD or GFCI are safety
devices that are designed to trip if there is a fault current, one as
small as 6ma. They look at the current going out and compare it to
the current coming back. IF they differ by more than about 6 ma,
it trips because it indicates that some of the current isn't flowing
in the intended path, but making it's way via another path, typically
to ground. That path could be you sticking your wet finger into a
receptacle, a faulty appliance with a partial short to the case,
or in your case, probably wet wiring outside. That RCD breaker isn't
tripping because it sees over 63A, it's tripping because it sees a
small ground fault, which is very common.