According to Tom Horne, Electrician :

It takes around thirty milliamperes; that's three tenths of an ampere;
to kill, sixteen amperes to trip the breaker on overload, and up to
seventy five amperes to trip it magnetically via it's instantaneous
trip. Does that answer your question?

It should ;-) But 30ma is three hundredths of an amp. 3/10s
of an amp is 300ma ;-)
--
Chris Lewis,

Age and Treachery will Triumph over Youth and Skill
It's not just anyone who gets a Starship Cruiser class named after them.