Fw: Re: CBus control of extract fans?

[Gareth Cook <g@xxxxxxxxxx>]

Possibly a twin pole contactor is in order..

Gareth Cook
IT Architect / Project Manager, SWG Sales Europe
Office: +44 (0)1784 445166 - Mobile: +44 (0)7980 445166
email: g@xxxxxxx


----- Forwarded by Gareth Cook/UK/IBM on 22/05/2007 13:22 -----

Discussion
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ukha_d@xxxxxxx
Today 12:51

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RE: [ukha_d] Re: CBus control of extract fans?
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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
>
>
>
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> ----- Forwarded by Gareth Cook/UK/IBM on 22/05/2007 12:09 -----
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> Discussion
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> ukha_d@xxxxxxx
> Today 12:02
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> [ukha_d] Re: CBus control of extract fans?
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> --- 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:
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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







[Non-text portions of this message have been removed]