"dennis@home" wrote in message
eb.com...
On 30/05/2015 17:21, John Rumm wrote:
On 30/05/2015 14:19, dennis@home wrote:
On 30/05/2015 01:03, John Rumm wrote:
On 29/05/2015 19:02, dennis@home wrote:
On 29/05/2015 11:20, John Rumm wrote:

All that is required is a bit of common sense from the designer of
the
circuit, and a user can do as they please.


So three 3kW heaters on the end of a ring then?

Which part about the designer using common sense did you not get?

If you have a kitchen layout like mine, all the sockets are in the
middle of the ring since there is a 20m of cable run just to get there.
If you have a CU in the kitchen then you use a bit of common sense like
if you have a pair of adjacent utility spaces close to one end of the
ring, you make sure you wire the sockets on alternate ends and not
adjacent to each other.

So you want to make it worse as the user now has no idea where the
"close to one end" sockets are?

Den, I know this is a personal crusade of yours to convince the world
there is a problem where it is blatantly obvious that one does not
exist, but at least try and put the effort in - rather than taking the
lazy route of simply being obtuse...

I will say it again for you:

The user has no need to know what socket it where in the cable run. They
plug stuff in, it works.

Now a designer ought to think about it a bit more deeply. They need to
think about what the typical loads are going to be, what the circuit
layout will be, and what type of circuits to provision. For general
purpose socket circuits this is often a ring, but it does not have to be.

So a user has to know what design decisions have been made so he can avoid
doing something that compromises them.

No, because the design is robust enough to work fine
even when the user does something really stupid like
running 3 3KW heaters and the microwave in a kitchen
which is being renovated and has a ****ing great hole
in the outside wall and it’s a blizzard outside.

That's the problem, you don't know what a user will do.

And that is why the system is designed to handle say a
50A load fine for quite a while with no chance of a fire or
even the wiring insulation melting so you need to replace it.

All you have been able to say is that typically a user wont compromise the
design but they still can, either by design or by accident.

And the system handles that fine with
no risk of a fire or the insulation melting.

And if it is so flagrantly abused so that the insulation
does melt, the breaker will trip and its still completely safe.