maintained/non maintained

KNIPEX · Jun 1, 2009

hi guys,

Exit lights which have running men on them which are maintained how do you wire them??

perm live from the out going em test which, which i know is right. for maintained and non maintained.

but for maintained which one 1or 2

1. a switch wire of local lighting circuit so the exit light switch off when u switch the lights off but still charges. and lights up again when u put the lights on.

2. a perm live to it so its always lit up until power failure

Spudnik · Jun 1, 2009

In a public place the EM should be on all the time, but if they dont, then the switch wire turns them off with the rest, however, because there is also a perm live, it will then light up when the power fails, whatever the position of the switch.

If its in a flat for instance, then they come on when the power fails.(normally, depends on the designer etc).

NM - Works on power failure only.
M - Works all the time or with switch.

baldsparkies · Jun 1, 2009

As Jason says, but if your maintained spec is permanently on( ie iluminated 24/7) you can put a link between Lsw and L saves on wiring.

Spudnik · Jun 1, 2009

Oh yeah. I forgot that bit

KNIPEX · Jun 1, 2009

thanks guys so both ways are right.

maintained can be switched or can be lit at all times

Spudnik · Jun 1, 2009

KNIPEX said:
maintained can be switched or can be lit at all times

They can but in certain circumstances they MUST be lit permanently depending on their location and the designer.

sparks1234 · Jun 2, 2009

So then, who has heard of sustained as well?

Doomed · Jun 2, 2009

any of the older people here.
A light fitting that has a normal use lamp in it with another lamp in the fitting that is only used in event of a mains failure - ie a normal light with a non maintained light built in to it.