RE: EIB installation

["Hawes,Timothy Edward (GEG)" <haweste@xxxxxxx>]

Martin,

Ok, standard ring main, that's fine. IEE regs compliant I had already
assumed :-)

You can do that with CBus etc, sort of. The catch is that instead of the
ring running literally around the house, it would be effectively star-wired
from a single point. Think of a radial circuit, but with two cable runs
(one to the socket, and one from). For the CBus configuration you use a
single cable, when you need to changeover to sell (if you're not going to
leave the CBus kit behind) you fit both cables into the socket at the
remote end and wire the other ends into a ring at the consumer unit end.
I feel I'm not explaining that very well :-(

It would be like wiring the tamper circuit on an alarm system, if you're
familiar with that (where there's usually just one tamper circuit for the
whole system).

Lighting circuits would be similar, although you'd have to pre-wire the
wall switches to the ceiling roses during first fix, and then ignore them
for your CBus controls. Only connect up when you need to sell.

Please shout if I've not explained things very well, it's difficult to
describe in words, but if you draw it out it should be clearer.

As for signing off, pop over the Yahoo Selfbuild group, plenty of good
advice over there on this sort of thing. Also take a look at the group's
FAQ which should cover this.

HTH,

Tim.

> -----Original Message-----
> From: Martin Wonders Sent: 16 January 2004 13:44
>
> Tim,
>
> By standard wiring I mean, as per IEE regulations i.e ring
> mains, spurs etc.
> I'm not sure what is expected in terms of the wiring being
> signed of by the
> elecricity board.
>
> Martin
>
> -----Original Message-----
> From: Hawes,Timothy Edward (GEG) Sent: 16 January 2004 12:57
>
> > -----Original Message-----
> > From: Martin Wonders Sent: 16 January 2004 09:16
> >
> > I'm starting a new build in April and SWMBO (who is an
> > Electrical Engineer
> > and will not be blinded by science) wants the the power wiring
> > to be standard (thinking about resale).
> >
> > Martin CW
>
> Martin,
>
> Just before I dive in with some comments, what exactly do you
> mean when you
> talk about "standard" wiring. If you wire for A.N.Other
> hardwired system;
> CBus, Polaron etc. you can revert to standard switches &
> sockets by removing
> your intelligent, centrally-located kit and replacing with
> connecting blocks
> (for want of a better description).
>
> Or, if it's really a problem, run two lots of mains cables
> (e.g. CBus and
> 'standard' configurations) and only connect up the second lot
> when you come
> to sell.
>
> Cheers,
>
> Tim.

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