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Old 11-24-2016, 12:15 PM   #1
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Default Lighting contactor with timer

Can anyone tell me what type of lighting contactor I need to control lights in my firehouse for a timed event. Currently we have three relays with a 24V coil that control three banks of lights. I would like to have the lights time off after 5 or ten minutes.
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Old 11-24-2016, 12:26 PM   #2
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Would a timer switch work. Rotate the switch to 10 minutes and that's it. Some have a hold feature if you want it to stay on until you decide to shut it off.
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Old 11-24-2016, 01:41 PM   #3
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What turns on the lights now? As Dennis says just a standard timer switch. You can get fancy...



or fancier.
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Old 11-24-2016, 01:56 PM   #4
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If you look for a "timing contactor" you will probably find a replacement for the contactors you have with a settable time-on.

If that's hard to find, or out of the budget, you could run the switches / controls to inexpensive "timing relays" with the contacts switching the 24v coil of the existing contactor. If you use relays with 24v coils, they will probably be compatible with your existing switches and of course there's already 24v power there.
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Old 11-24-2016, 01:59 PM   #5
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Perfect spot for a little Logo! or Zelio.
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Old 11-24-2016, 05:44 PM   #6
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Quote:
Originally Posted by adagys View Post
Can anyone tell me what type of lighting contactor I need to control lights in my firehouse for a timed event. Currently we have three relays with a 24V coil that control three banks of lights. I would like to have the lights time off after 5 or ten minutes.
There are plenty of options -
But we need to know
how are these lights turned on and from were ?
do you want remote control ? or just local ?
fully automatic ?
fully manual ?
are the three banks all used as one ?

please elaborate ?
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Old 11-24-2016, 06:28 PM   #7
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Quote:
Originally Posted by adagys View Post
Can anyone tell me what type of lighting contactor I need to control lights in my firehouse for a timed event. Currently we have three relays with a 24V coil that control three banks of lights. I would like to have the lights time off after 5 or ten minutes.
Does a dispatch signal trigger the lights to come on in the apparatus bay and you want them to turn off automatically after the trucks leave? If that's the case the dispatch signal needs to start a countdown timer which powers the relays until T=0. You could do this via PLC or a time delay relay.
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Old 11-24-2016, 07:27 PM   #8
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adagys, MikeFL is going the right direction.

What kind of station alerting do you have there?? Is it a Zetron Model 26 or something similar?? Wired or IP based. Is this a satellite station, with station transponder units?

Is this just for the apparatus bay of do you have house lights in quarters with an offset time?

If the lights are initiated by tone-out from the dispatch center that is an easy fix with a small run-down timer made by Alarm-Saf.

http://www.alarmsaf.com/pdf/data_sheets/52-049.pdf

A little more info I can tell you what you need, but of course, this is a job for your municipal electrician
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Old 11-25-2016, 07:34 AM   #9
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Quote:
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Can anyone tell me what type of lighting contactor I need to control lights in my firehouse for a timed event. Currently we have three relays with a 24V coil that control three banks of lights. I would like to have the lights time off after 5 or ten minutes.
Aren't you supposed to fight fires and not try to start them?
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Old 11-25-2016, 09:19 AM   #10
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Aren't you supposed to fight fires and not try to start them?
Their biggest problem is not pulling wires. It's running out the door leaving the food cooking on the stove. Then while on scene of the call they get another call that their firehouse is on fire. Seen it happen. Maybe that's where they need the ten minute timer. Require someone to stay attending it or it goes cool.
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Old 11-25-2016, 10:40 AM   #11
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Quote:
Originally Posted by adagys View Post
Can anyone tell me what type of lighting contactor I need to control lights in my firehouse for a timed event. Currently we have three relays with a 24V coil that control three banks of lights. I would like to have the lights time off after 5 or ten minutes.
You could add a simple 24v delayed off relay and just tie it in to the 24v control voltage. The most simple solution.





https://www.zoro.com/airotronics-enc...1h/i/G5238222/
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Old 11-25-2016, 11:16 AM   #12
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You could add a simple 24v delayed off relay and just tie it in to the 24v control voltage. The most simple solution.





https://www.zoro.com/airotronics-enc...1h/i/G5238222/
Or he could hire an electrician.
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Old 11-25-2016, 09:46 PM   #13
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Or he could hire an electrician.
I've seen a whole lot more electrical advice given to home owners that don't know a light bulb from a fuse on here as of late than a guy like this that asks about a contactor and knows there are 24v coils on the relays controlling the lights he was concerned about.

I have brought the subject of this being a site for electrical professionals exclusively or not and apparently it isn't a concern for most here so screw it. I know of no license requirements for low voltage wiring.

You guys want to keep answering DIY questions when you feel like it and I'll do it when I feel like it until there is some unified front here.
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Old 11-26-2016, 08:29 AM   #14
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Problem is, the OP could be digging into an engineered system and possibly bypass a necessary building state.

The OP signed up as an electrician and then mentioned "his firehouse". There are plenty of dual career and volunteer fire fighters here.
He should have mentioned that.
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Old 11-26-2016, 09:13 AM   #15
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Problem is, the OP could be digging into an engineered system and possibly bypass a necessary building state.

The OP signed up as an electrician and then mentioned "his firehouse". There are plenty of dual career and volunteer fire fighters here.
He should have mentioned that.
Amen to that.

I took the way he posed as an indicator of his base knowledge. Far superior to I have a flickering lamp on the dog table that blows those black handle fuses, quality of the typical DIY post.
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Old 11-27-2016, 04:53 PM   #16
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There are three banks of lights.
Each bank has a relay which has a separate 20 amp circuit.
Each bank is controlled with a low voltage switch at two locations.
The relay is: 20A/120V/ with a 21-30VAC coil.
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Old 11-27-2016, 05:02 PM   #17
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Also, I am a licensed electrician and a full time firefighter and have been so for 25 years. And if this starts a fire, I am fully qualified to put the fire out and rewire the station in a way that I understand!!!!! Thanks for the help.
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Old 11-27-2016, 05:03 PM   #18
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We have the Zetron system, but it is not tied into the lights.
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Old 11-27-2016, 11:38 PM   #19
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Also, I am a licensed electrician and a full time firefighter and have been so for 25 years. And if this starts a fire, I am fully qualified to put the fire out and rewire the station in a way that I understand!!!!! Thanks for the help.
A solid state delay on break relay is the easiest item to add for the operation you'd like.
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Old 11-28-2016, 05:35 AM   #20
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We have the Zetron system, but it is not tied into the lights.
The link I posted will work fine for you if you're manually turning the lights on.

The stations I work in around here have them tied to aux relays in the station 6 handset so the lights come on with the toneout.
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