Quote:
Originally Posted by pmmunro
I'm a bit surprised by your statement "there's not a lot of current to be got from the mains, especially AC". Maybe I'm misunderstanding your meaning.
|
Peter,
As you have discovered,675A indeed.We are talking about short circuit current in a SUB CIRCUIT ie at the 13A socket.A lot more current would be had further towards the sub station transformer.Another point with AC is the reactive impedance of cables and transformer,all this will limit the current.
As for storage batteries,you are really into danger,short circuits are catastrophic,unless its extra low voltage.
DC is not something to play with.
I used to perform mains short circuit testing on MCBs,I know mains current can be surprisingly small,some MCBs would not trip fast enough to pass the tests!