RE: Re: CBus control of extract fans?

["Phil Harris" <phil@xxxxxxxxxxx>]

I think you still should have an isolator but you'd best talk to
someone who
is up on the current wiring regs.

Phil

> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
> Of Paul Gale
> Sent: 22 May 2007 15:56
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Re: CBus control of extract fans?
>
> So with a fan wired directly to CBus, you don't need any isolator?
>
> Paul.
>
> > -----Original Message-----
> > From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On
> Behalf
> > Of Phil Harris
> > Sent: 22 May 2007 12:44
> > To: ukha_d@xxxxxxx
> > Subject: RE: [ukha_d] Re: CBus control of extract fans?
> >
> > No - the isolator was required because effectively they are
"double
> > fed"
> > with a permanent supply as well as the switched supply from the
> > lighting
> > circuit that is used as a trigger.
> >
> > The purpose of the specific extractor/fan isolator was to ensure
that
> > *ALL*
> > feeds to the fan were isolated.
> >
> > Phil
> >
> > > -----Original Message-----
> > > From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On
> > Behalf
> > > Of Gareth Cook
> > > Sent: 22 May 2007 12:25
> > > To: ukha_d@xxxxxxx
> > > Subject: Fw: [ukha_d] Re: CBus control of extract fans?
> > >
> > > Wasnt an isolator required because they normally hang off
the light
> > > circuit ?
> > >
> > > Now that mine are on individual relay circuits they have
there own
> > fuse
> > >
> > >
> > >
> > >
> > > ----- Forwarded by Gareth Cook/UK/IBM on 22/05/2007 12:09
-----
> > >
> > > Discussion
> > > Main Topic
> > >
> > > ukha_d@xxxxxxx
> > > Today 12:02
> > >
> > > .
> > > Subject:
> > > .
> > > [ukha_d] Re: CBus control of extract fans?
> > > .
> > > Category:
> > >
> > >
> > >
> > > --- In ukha_d@xxxxxxx, "Paul Gale"
<groups2@...> wrote:
> > > >
> > > > Great - thanks everyone :)
> > > >
> > > > So apart from fitting the fan to the relay at this
point, I don't
> > > need to worry about programming until later on after the
build?
> > > >
> > > > Paul.
> > > >
> > > I am no electrician but I thought you have to wire the fan
to an
> > > isolator outside the bathroom?  What I have is a mains feed
to the
> > > isolator from the light, a feed from isolator to the fan and
a feed
> > > from a relay to the isolator.  So mains live goes light
-> isolator
> > > patress -> relay -> isolator (where neutral also
isolated)->fan
> > >
> > > This means the fan can be isolated regardless of what the
relay
> > > setting is.
> > >
> > > HTH
> > > Jon
> > >
> > >
> > >
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> > >
> > >
> > >
> > >
> > >
> > > Unless stated otherwise above:
> > > IBM United Kingdom Limited - Registered in England and Wales
with
> > > number
> > > 741598.
> > > Registered office: PO Box 41, North Harbour, Portsmouth,
Hampshire
> > PO6
> > > 3AU
> > >
> > >
> > >
> > >
> > >
> > >
> > >
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