General > General Technical Chat
Issues with circuit breaker/RCD randomly tripping
Vovk_Z:
--- Quote from: Halcyon on August 10, 2021, 10:24:13 pm --- I should also point out that it's a relatively new house, well under 10 years old.
--- End quote ---
So, a ghost is not a reason too. :-// :)
Mouses start to move at night...
Have you pulled off everything from sockets?
Gyro:
Hopefully the electrician did an insulation test on Neutral to Earth as well as Line-Neutral and Line-Earth. Neutral-Earth faults are notorious for causing intermittent RCD trips with no other symptoms.
themadhippy:
--- Quote --- It also feeds the gas hot water system
--- End quote ---
--- Quote --- Happens around the same time every night.
--- End quote ---
Is there a time clock on the heating system
Psi:
Since your old RCD is not faulty you could reinstall that so you have two and wire half the connections to each. At least you can eliminated 50% of the items the next time it trips
hm.. you said you have gas hot water, do you also have a smaller electric hot water tank as well, maybe on ripple control
(It's not uncommon here to have primary gas hot water but also a smaller electric hot water cylinder in the kitchen so that hot water is available instantly.)
Another intermittent option is the icemaker in the fridge door, or water cooler.
Alti:
I'd start from checking what failed.
There are various types of RCBOs (if that is what you have there) and most of the designs do not indicate which out of four trips actually tripped. So you are assuming this was residual current part - what makes you think so? Because you did not turn on any loads? If that is not due to overloading but there is also a magnetic trip inside - there is no way to tell, especially when it is B curve. Then, if you have reactance there (inductor or capacitor) and you are unlucky, it is going to trip due to inrush at turn on.
If that is residual current part and you have single pole circuit breakers then I am afraid this is going to take some time till you figure out what is going on there.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version