"Dave Plowman (News)" wrote in message
...
In article
ws.net,
:::Jerry:::: wrote:
And when there were different sizes of plugs, what was to
stop
an
idiot using a five amp one for a 3 kW heater?


True, but then the final protection would trip...

You weren't around in the days of those radial circuits? It was
common to

I was actualy...

see both 5 and 15 amp plugs on the same circuit.


But that is not what you originally implied, someone trying to
run a 3kw
heater off a 5amp supply.

No - I said using a 5 amp plug. Didn't say anything about the
supply,
which were usually a 15 amp radial.

True, but that is were the stuff below comes in.


What is the difference between someone running
a 5amp load off a 15amp radial circuit and someone leaving a
13amp fuse
in a BS 1363 type plug, or worse still, using that bolt to bridge
out
were the fuse goes and thus protecting something at 30amp rather
than
the correct 5amp ?...

The fuse in the plug top is to protect the appliance - not the
circuit.

So ?!

If
you overload the appliance - or in this case extension lead - it
will be
obvious by the smoke. Overloading a circuit with concealed cables
is a
different matter

But you won't because you have a fixed fuse or breaker that is rated
to protect the fixed wiring, there is nothing to stop some idiot
bridging the 30amp fuse protecting a ring circuit and thus leaving
the circuit protected only but the company fuse even now.