#DIYDay again
Fixing electrics and disconnecting others.
basically, the extractor in my new ensuite done last year wasn't turning on with the light... But could be activated by cycling the isolator switch quickly.
Figured either the controller on the inline extractor had failed, or there was a broken wire... maybe just a loose connection.
Was not expecting a faulty switch arcing to be the problem.
Whilst the switch was hanging of the wall, I noticed that if you moved the switch in certain directions whilst the power was on... the extractor came on, then off as you moved the wires about. We'd already checked the wires were secure and found no loose ones.
So after carefully pulling and moving the wires individually... we found the one that was the problem... Possibly a break inside the wire. hard to diagnose, even harder to fix as it means fishing new cable through into the loft.
So I had an idea... swap the isolator switch with one that we know works.
So we did just that... and the problem went away.
Diagnosis... the problem lay with the switch itself.
It wasn't some cheap switch either, but a British General Nexus black metal one... these are about 4x the price of your basic plain white plastic ones. Not expensive at around £15... but higher price would bring higher quality you'd think.
So I opened the switch up, know it would be destroyed in the process to see if the cause was obvious.
What I found was concerning... those scorch marks on 2 of the contacts should not be there after 8 months and the fault was intermittent for at least 3 months before getting worse.
I'm not an electrician... I don't know if this could have caused a fire.
But at least the solution is an easy fix... I've left the plain white one fitted in place and will get a new plain white one to go back on the other bathroom... For now the electrics for that switch are protected with wago connectors until I can get the new one.
As for the rest of the DIY, that was disconnecting the electrics into the conservatory... switches and sockets are now dead, some wiring removed. once the old conservatory is taken down (hopefully starting next weds or thurs), I'll cover the blanking sockets better to protect from any rain as it will be a couple of months before the new one is up.