Thread: Fuses
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Old 8th Jan 2007, 8:18 pm   #6
G8DLG
Retired Dormant Member
 
Join Date: Aug 2006
Location: London, UK.
Posts: 48
Default Re: Fuses

Quote:
Originally Posted by pmmunro View Post
A typical domestic 13A socket can have an earth loop impedance of less than 1 ohm, giving a prospective fault current measured in thousands of amps.
I think you nean several hundred amps,at least at the sub circuit feeding the socket,(theres not a lot of current to be got from mains,especially AC),but a fuse has to break considerable energy at short circuit.
Fitting the correct fuse is of utmost importance,it should be rated equal to, or less than the smallest wire in the circuit,for most radio sets a 2A HRC fitted in the plug gives good protection.
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