RE: HA without fallback-CBUS

["Nigel Giddings" <nigel@xxxxxxxxxxxxxx>]

Neil,

I considered a central emergency lighting system with wiring in FP200
(as opposed to pyro) but felt in my situation local self contained
(non-maintained) lights suited best.

The lights are not installed in 'formal' areas, only in the basement,
node 0 and loft areas (Node 3). For this reason looks were not that
important. They will not be used for normal lighting hence
non-maintained.

I will connect them to the breakers that also feed the lighting dimmers
in their own location so a breaker trip will bring the light on
immediately. I am also considering routing them through relay contacts
that are held closed by other systems. Specifically the fire detection
system which has a relay output on alarm condition.

These will be electromechanical connections set to fail-safe, ie any
failure in supply, MCB or cable will result in the light coming on...

This will not cover me for a dimmer failure or if an MCB on a dimmer
output fails. However, these areas are covered by multiple dimmers for
scene lighting (Basement). The other areas (Node 0 and Node 3) are
operated by mechanical switches with the power taken from the permanent
live side of the actual switch.

I think I have covered most bases, it is, after all, only a house...

Nigel

Planning the House warming party for late June......
http://photos.corbenic.co.uk



-----Original Message-----
From: Neil Fuller [mailto:neil@xxxxxxx]
Sent: 14 January 2006 09:57
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] HA without fallback-CBUS

Of course, emergency fittings will overcome mains failures etc and need
to be sited to provide illumination of key escape routes. Nigel, have
you installed a centralised emergency lighting system or used separate
luminaires? In my experience, the centralised systems , with their far
more reliable lead-acid battery stacks are much preferred over the
distributed systems, although of course the wiring has to be in pyro and

so starts to get costly (and I guess a large stack of batteries is
overkill for an average house).

Regards

Neil


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15/1/2006