I have deleted one picture, it made it too easy to spot the issue because I had zoomed in on something and you need to use your electricians visual inspection skills.
At least the wooden frame didn't catch fire. A 2.5mm2 cable protected by a 30/32 Amp device. So that is what can happen. Was it a ring final?
Z.
I suspect that the outcome would be similar with a 20 amp fuse.
I am not a fan of crimped connections. I appreciate that a good crimp tool, good materials and a careful operator CAN make reliable connections, but in practice they seem unreliable.
When working as a building maintenance engineer, a significant part of my work was locating and rectifying faults caused by defective crimped connections.
Is the top hole of the red 30 Amp insulating shield heat damaged. Did the fuse carrier overheat and transfer heat upwards to the crimped joint, thus assisting its demise? I assume that the heat damage is caused mainly by the bad crimp, a heavy load, and I2R heating.
O.K. The old red L. was heat damaged. Probably due to bad stripping of the cable. The L. was renewed with a short section of brown 2.5mm2. It appears that L. may have overheated and migrated into a C.P.C.
