2 things wrong with this the most obvious being the fact the the cable is not clamped in the plug.
The…

Should only use boxes that are in good condition.

Old cables fall to bits, this is why you should get your electrics checked periodically.

No earth, Old Regs, conductors starting to break down and not marker on the black conductor to identify…

Melt down on one pin

Concrete floors, beware of buried cables which is very popular in the older blocks of flats.

Rotting steal conduit.

Loose connections cause burn outs and potential fires.

Burnt out but still working. Cable welded itself to the terminal which kept it working.

Over tightened terminations can cause the housing of an MCB to break, especially when they have aged…

Was found to be still working although customer said the lights had been flickering!

This was still working although quite warm from continued use.

This was an original light pull cord switch in the bathroom probably dating back to the 50's.

It is important to isolate a circuit BEFORE removing faceplates. Due the the VIR cable, thats old rubber…

Conductor burnt out altogether hence the immersion it was feeding stopped working, had to replace the…

Another loose connection.

And people wonder why electrical fires start, it is not just a case of overload, it can be a loose connection…