H
holmslaw
..
So what's the name given to the type of lighting which only comes on automatically when the power fails but when the power is present can be turned on and off like any other light?In maintained emergency lighting the emergency lamp is permanently ON.
Maintained Emergency Luminaire
A luminaire containing one or more lamps, all of which operate from the normal supply or from the emergency supply at all material times.
Non-Maintained Emergency Luminaire
A luminaire containing one or more lamps, which operate from the emergency supply only upon failure of the normal mains supply
Combined Emergency Luminaire
A luminaire containing two or more lamps, at least one of which is energised from the emergency supply and the remainder from the normal supply (If the emergency lamp is only illuminated in a mains failure condition this luminaire is regarded for fire authority approval as non-maintained).
The ones I have are a mixture of neither. They contain 2 lamps.
Power on, switch off - none of them are lit.
Power on, switch on - both of them are lit.
Power off, switch irrelevant - one of them is lit.
The maker (Thorn) describes that behaviour as "maintained".
So with a key/test switch is it possible to install these sensor lights with non-maintained emergency lights feeding off them?
http://www.gx-security.co.uk/steine...Csid=07d1a4f602f33199575e53c893addc61[/QUOTE]
Don't see why not. This would make for an easy install, as you'd simply need L, N and E looped in and out of all fittings, whether they be non-maintained emergency luminaires or occupancy sensing fittings. You could then have a test switch at the supply end which would remove the supply to everything, thus testing the emergency lights.
It would be preferable for the main occupancy sensing lighting not to be on the test switch, but this would mean that you can't utilise the existing wiring alone.
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