Speaking of fire hazards. Wild storms did this on Good Easter Friday (19th April 2019). This is the 3 phase mains connection box connecting mains power from the grid to 8 dwelling in my neighbourhood.
Apparently there was a loud bang and street and traffic lights were taken out temporarily when this MCB blew. I slept through the explosioin as this happened in the middle of the night.
How thick are 3 phase power cables (They are hidden in the metal pole)? Each conductor has a diameter of 25 mm!! These cables are a pain to deal with.
So we have dealt with external wiring. They are actually pretty good. Sure the grid power cables are not made of copper. But they do the job. And they are capable, and not ‘bad’ as claimed.