In message ,
whisky-dave writes
On Friday, November 9, 2012 1:58:11 PM UTC, Mike Tomlinson wrote:
In article ,

whisky-dave writes



True but how do you calculate the minimum fuse necessary, it's not
always that

easy.



Yes it is, you look at the appliance rating plate and if it's in watts

not amps, apply Ohm's law.

So what fuse do you put in a fan that's rated at 50W a 3 amp ?
As that's what's in the fan we brought and it has been PAT tested and passed.

for me 50/230 is NOT 3
So are you saying I should put in a ~250ma fuse instead ?
As that's how I'd calculate it, but I'd put a 3 amp fuse in the plug as
that's what the manufactuer did.


3 amp as opposed to 5 amp or 13 amp.

--
bert