battery wall packs

[ceb58]

I have a building I am doing that was specked with 8 42w cfl wall packs. Three of these wall packs were to be battery back up. I have not powered the building as of yet but when I installed the wall packs,made my line connections and connected the one battery line the lamp came on. This got me thinking the wall packs are controlled by a photo cell when the photo cell drops out the three wall packs will revert to battery and burn during daylight. The only way I can see around this would be to install another photo cell on each wall pack to break the battery circ. any other suggestions. These wall packs are all electronic ballast.

 

[JohnME]

Are you sure that the battery doesnt just supply power when there is no line voltage? Such as an emergency light?

 

[ctmike]

sounds like you got it right CEB i like putting a photocell on each fixture so that if you lose one photo cell your not in the dark all together

 

[Bernard1599]

It sounds like those wall packs provide both lighting at night and emergency lighting. If so, they require an unswitched hot wire to the battery charger to keep it charged during normal operation and to the internal device that will sense loss of power, in addition to the "switched" photocell connection.

Regards,
Bernard

 

[ctmike]

It sounds like those wall packs provide both lighting at night and emergency lighting. If so, they require an unswitched hot wire to the battery charger to keep it charged during normal operation and to the internal device that will sense loss of power, in addition to the "switched" photocell connection.

Regards,
Bernard

goods point Bernard the first place to start here would be with the instructions that came with the fixture

 

[R Bob]

I have a building I am doing that was specked with 8 42w cfl wall packs. Three of these wall packs were to be battery back up. I have not powered the building as of yet but when I installed the wall packs,made my line connections and connected the one battery line the lamp came on. This got me thinking the wall packs are controlled by a photo cell when the photo cell drops out the three wall packs will revert to battery and burn during daylight. The only way I can see around this would be to install another photo cell on each wall pack to break the battery circ. any other suggestions. These wall packs are all electronic ballast.

Assuming that we are talking about the same thing, the wall packs are coming on because there is no power. They are working as designed. Never ran across an emergency wall pack with a photocell.

 

[ceb58]

goods point Bernard the first place to start here would be with the instructions that came with the fixture

It sounds like those wall packs provide both lighting at night and emergency lighting. If so, they require an unswitched hot wire to the battery charger to keep it charged during normal operation and to the internal device that will sense loss of power, in addition to the "switched" photocell connection.

Regards,
Bernard

Yes, Bernard's post makes sense as dose yours. Except there were NO wireing instructions with the wall packs. The only field wireing was the ungrounded,(hot), grounded (neutral), and EGC. I ask my supplier for a cut sheet on the lights but he has not came through yet.

 

[R Bob]

I ask my supplier for a cut sheet on the lights but he has not came through yet.

Go to mfgr web site.

 

[ceb58]

goods point Bernard the first place to start here would be with the instructions that came with the fixture

Go to mfgr web site.

Been there no info that I can access

 

[ctmike]

who makes the fixture ??

 

[ceb58]

who makes the fixture ??

Cant remember just now. Will have to check invoice. They weren't RAB it started with a S:-?

 

[cadpoint]

I thought about the same as post #4, but really more like #6, those lights are for means of egress & why are they on a photo cell, seems like an RFI for another circuit!

 

[ctmike]

I thought about the same as post #4, but really more like #6, those lights are for means of egress & why are they on a photo cell, seems like an RFI for another circuit!

my thought was these are exterior lights which arnt need during the day

 

[ceb58]

I thought about the same as post #4, but really more like #6, those lights are for means of egress & why are they on a photo cell, seems like an RFI for another circuit!

Yes these lights are for egress. I see no way to wire them where power is never interrupted. It would be no difference if they were on a switch. I will make all efforts to contact mfg. tomorrow and report back.

 

[cadpoint]

my thought was these are exterior lights which arnt need during the day

use 8 42w cfl wall packs in a search, I didn't know what they were talking of at first, it makes no sense to me to battery back-up a device unless for some reason!

The big boxes can play with their lights and go green for the customers, but some level of safety is invloved if redundancy is installed, No !

 

[benaround]

ceb58,

How could you wire a 6/12vdc battery circuit to a photo-eye? Maybe tomorrow you could

bench test one of these fixtures to see how it works. I know you know this, but, remember

these are EMG. lights, do you really want to alter them yourself ?? Hope the cure is easy

for you, good luck.

 

[benaround]

ceb58,

Here's another thought, the regular wall packs supply the level of light needed, if power

goes down, the battery back-up units kick in for emg. egress, be it day or night. Supply

BB units with 24/7 unswitched circuit power, done ??

 

[ceb58]

OK, talked to rep. today. Told him what I had and was doing. He laughed and said he wished he had $100.00 ever time this situation comes up. Turns out the lights have a built in sensor in the electronics that "knows" it daylight and will not let the light burn during day time. I hooked one up today, let it charge and made it come on with the photo cell. After taking away the power the only way it would burn was to push the test button. Turns out the thing is so simple you over think the installation.