On Wednesday, 28 March 2018 14:58:30 UTC+1, whisky-dave wrote:
On Wednesday, 28 March 2018 14:25:50 UTC+1, Sam wrote:
These
sites shows you the possible pitfalls of it:
https://www.pat-testing-training.net...se-ratings.php
exactly as I said
"The purpose of the fuse within a BS1363 plug is to protect the cable."
the thinking behind the design of our household electrical system is that the plug fuse is there to protect the cable, and the appliance should either protect itself or be protected by a 13A fuse. However IRL it does more than that for several reasons as I've already covered. Not that you'll listen to sense.
and its not illegal AFAIK to buy fuses of non standard values, I've even brought 50ma ones.
This year I've brought over 100 1 amp QB fuses and prety much every one of them has blow.
so again you don't know how to assess the correct fuse for the job.
https://www.esr.co.uk/electronics/fuses-household.htm
I also came across this from a forum:
" The problem is that of "surge" or "startup" currents. These often blow
a 3A fuse.
Yes I know and yet another reason not to use the wattage calculation on the back of pieces of equipment.
absolutely the wrong conclusion. It's just not quite as simple as 3A fuse for everything upto 699W.
It;s even a bigger problem with IEC leads of which we have 100s which if just leads are treaded differntly because you have no idea what they will be connected to power wise.
This is why Table 2 of BS1363-1 effectively states that for 0.5 sq mm,
5A fuse may be used if this is a problem,
which is why most of our IEC leads have either 5 or 13 amp fueses in them..
£amp is just too low unless yuo are sure you'll never exceed 700W
I thought you said everything there had a 3 or 13A fuse.
As for current flow.
The appliance takes/allows the current to flow due to its
resistance/impedance and the source forces/feeds the current to the
appliance. Isn't this is what is implied by EMF of a source, ie the
Electro Motive Force?
No, emf is volts not current.
you're funny. And you seldom learn.
NT