Are you sure it’s 2.5mm? Not 4mm?
I thought he said the dimmer “didn’t work”.
The short circuit that caused the flash has killed your dimmer.
Make everything off in larger terminal blocks in the flushed in conduit box, dropping three new smaller wires down to the new light.
You’re not trying to compare one with the other. You’re making sure the highest reading is low enough to provide disconnection.
You may find one...
Fan is designed to fit into ducting. Hole through wall may not be large enough for ducting, which is why they left it out?
A type B needs 5x it’s current rating to trip “instantaneously”. A type C needs 10x, a type D needs 20x.
So a C63 needs 630amp. Using ohms law,...
No. Not really, but depends on the fault current.
I joined in 2004. Time has flown. I am now ripping out installs I originally did as an apprentice and updating them. Mainly commercials.
Is the fan working in the oven? That can cause elements to blow if it’s failed.
Replacement elements are often poor quality. Some cost less than...
If it’s functionality you want, one of these shifts air.
or this, a little less intense....
you can stop it where you like.
Depending on your fitting, you could fit GU10 lamp holders instead and remove the transformers from the circuit.
You won’t regret fitting duct. NOT conduit, duct. Even if you bag the ends and leave it buried, digging down to expose ends when needed....
Yes. Current can travel from other circuits via a N to E fault. The existing RCD is likely fine. They rarely fail. They are a good make.
When you say disconnected, do you mean neutrals too? If not, you’re not testing the RCD in isolation on its own. Turning MCBs off is not enough....
Wouldn’t know without testing. Could be either. Test both. That’s what fault finding is.
smacks of a sparky who has no idea how to fault find.
Sounds like the usual low ins res N to E fault to me. The more load you apply,...
16mm main earth, 10mm bonding.
18th edition hookups are interlocked. If it’s a mechanical interlock, it can be padlocked. Such as a Rolec TRE2
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