Re: Boom .....
I have actually seen a circuit where some moron had come up with the idea to put a fuse in the neutral line of a 3 phase service.
And yes, the reason I know this is because I was called in to work out why radios had blown up, which the above post already explains other than that in 3 phase, the signal is 120º out of phase so you get approx 380VAC over two phases. An electric heater on one phase and aforementioned radio on the other - the moment the neutral fuse pops the radio briefly changes into a breadless toaster and either dies or catches fire. Thanfully it opted at least for Walhalla without the flames.
I merely pointed at the fuse and told them to get a proper electrician in to go over ALL of it - one bit of stupidity tends to be a warning that there's almost certainly more.
Biting the hand that feeds IT
