I was tracing some electrical cabling last night and noticed a ~6" section of 2.5 T&E cable that appears to have been subject to heat damage and the plastic has started to melt. It's about 1m away from the CU in the garage and connected to a 32amp MCB. It's a radial circuit that powers a small 4 sqm section of UFH int the utility room. I have no info on UFH as it was installed before we bought the house. Luckily we never really used it.
So from what I can see the circuit looks something like this:
32 Amp MCB (Contactum B Type) --> Damaged section of cable --> Switched fuse on garage wall --> into wall cavity --> Once it goes into the wall cavity i have no idea where it goes.
Needless to say, I've isolated the circuit at the breaker and won't be turning back on until an electrician has advised and fixed. There's a second identical circuit that provides power to the UFH in the kitchen. I've also isolated this despite there being no visible damage.
I'm interested to see what you guys think the problem is. Did the MCB fail or is 2.5 T&E no suitable for a 32amp circuit? Do you think there's a fault with the UFH or maybe just a faulty run of cable?
One good outcome from all this is that it's made me realise i need a fire alarm and CO2 extinguisher in the garage.
So from what I can see the circuit looks something like this:
32 Amp MCB (Contactum B Type) --> Damaged section of cable --> Switched fuse on garage wall --> into wall cavity --> Once it goes into the wall cavity i have no idea where it goes.
Needless to say, I've isolated the circuit at the breaker and won't be turning back on until an electrician has advised and fixed. There's a second identical circuit that provides power to the UFH in the kitchen. I've also isolated this despite there being no visible damage.
I'm interested to see what you guys think the problem is. Did the MCB fail or is 2.5 T&E no suitable for a 32amp circuit? Do you think there's a fault with the UFH or maybe just a faulty run of cable?
One good outcome from all this is that it's made me realise i need a fire alarm and CO2 extinguisher in the garage.