100amp fuse 16mm tails

[growler]

can anyone tell me why some houses are fitted with 100amp fuses and only 16mm tails ? was this how they did it back in the day ?

 

[Kate]

Connect a length of 16mm² tails to the output of a good welding set. Turn the current to 300A+ and see what happens. It’s boring!

What happens?

 

[Knobhead]

What happens?

Not a lot. Takes about five minutes before the insulation starts to degrade. By that time the fuse should have given up the ghost.

Note, should have given up. Over the years I’ve had a couple of fuses fail blowing a hole through the end caps.