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Author Topic: 110v Par Cans on a dimmer rack?  (Read 727 times)

Jack Pollard

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110v Par Cans on a dimmer rack?
« on: February 11, 2021, 10:31:09 am »

Hi There,

I have picked up 2x 4way par can bars.

Each bar has 4 par64 par cans hard wired to a single 110v 16a plug on the end.

Each lamp is 250w so the total is 1000w for the entire bar.

I use an old analog dimmer rack with a digital dmx converter to control it. The dimmer has socapex out of the back to a 16a spider fan.

The rest of my par64 are 240v and plug into the fan.

My question is can I plug the 110v bar into the soca spider or will I blow the lamps?

Any help is much appreciated.

Thanks
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Mike Caldwell

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Re: 110v Par Cans on a dimmer rack?
« Reply #1 on: February 11, 2021, 10:39:34 am »

What is the voltage rating of the lamps?
What is wattage rating of the dimmer total and per channel.

If the lamps are 110/120 volt they would blow if you turn a 240 volt
dimming system past about half way on that channel.

Jack Pollard

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Re: 110v Par Cans on a dimmer rack?
« Reply #2 on: February 11, 2021, 12:26:15 pm »

What is the voltage rating of the lamps?
What is wattage rating of the dimmer total and per channel.

If the lamps are 110/120 volt they would blow if you turn a 240 volt
dimming system past about half way on that channel.

Hi There,

Iím not sure on the voltage of the lamps but the dimmer is 5amps per channel.

I will check the lamp voltage.

Thanks
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Jeff Lelko

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Re: 110v Par Cans on a dimmer rack?
« Reply #3 on: February 11, 2021, 01:21:06 pm »

Hi Jack, what voltage are you running the system at?  As Mike stated, running 120v lamps in a 240v system won't end well.
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Jack Pollard

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Re: 110v Par Cans on a dimmer rack?
« Reply #4 on: February 11, 2021, 01:46:09 pm »

Hi Jack, what voltage are you running the system at?  As Mike stated, running 120v lamps in a 240v system won't end well.

Hi there,

I am running off 13a plugs so 240v wall sockets essentially. Thatís what I figured.

How are these lamps usually controlled/dimmed?

As you can probably tell I am an audio/video guy so Iím not at all an expert.

Thanks for all your help.
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John L Nobile

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Re: 110v Par Cans on a dimmer rack?
« Reply #5 on: February 11, 2021, 01:57:35 pm »

Hi there,

I am running off 13a plugs so 240v wall sockets essentially. Thatís what I figured.

How are these lamps usually controlled/dimmed?

As you can probably tell I am an audio/video guy so Iím not at all an expert.

Thanks for all your help.

What dimmer do you have, how many channels and whats the amps or wattage per channel? Does the dimmer plug into a 240V source but outputs 110V?
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Art Welter

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Re: 110v Par Cans on a dimmer rack?
« Reply #6 on: February 11, 2021, 02:11:07 pm »


I have picked up 2x 4way par can bars.

Each bar has 4 par64 par cans hard wired to a single 110v 16a plug on the end.

Each lamp is 250w so the total is 1000w for the entire bar.

Jack,

Sounds like you may have four 28volt 250 watt ACL (aircraft landing light) wired in series for 120volt use.

If that is the case, you could wire the 2 bars of four in series for 240 volt use.

ACLs have about a 7 x 8 degree beam, not much use other than lighting runways and rock and roll effects.
Bright as hell, but even at 28 volts, they don't last long, and loose one lamp and your 4 (or 8 in series) lights are gone until you find and replace the bad one. When one goes, the others are usually not long behind, kind of your Russian Roulette effect, all good till it's not ;^).

They make beams something like those left of Geddy Lee's head in the screen shot below:

Art
« Last Edit: February 11, 2021, 02:38:43 pm by Art Welter »
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Jack Pollard

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Re: 110v Par Cans on a dimmer rack?
« Reply #7 on: February 11, 2021, 02:30:25 pm »

Jack,

Sounds like you may have four 28volt 250 watt ACL (aircraft landing light) wired in series for 120volt use.

If that is the case, you could wire the 2 bars of four in series for 240 volt use.

ACLs have about an 8 degree beam, not much use other than lighting runways and rock and roll effects.

Art

Yes I have just checked and they are 28v Aircraft Landing Lamps.

The dimmer rack is 240v with 5a per channel.

I think the only option it to have them in series off one socket and control all 8 at once.
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Art Welter

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Re: 110v Par Cans on a dimmer rack?
« Reply #8 on: February 11, 2021, 02:50:17 pm »

Yes I have just checked and they are 28v Aircraft Landing Lamps.

The dimmer rack is 240v with 5a per channel.

I think the only option it to have them in series off one socket and control all 8 at once.
240v at 5 amps is only 1200 watts, but 8 ACL in series will draw around 2000 watts- you'd need a 2K dimmer.
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Mike Caldwell

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Re: 110v Par Cans on a dimmer rack?
« Reply #9 on: February 11, 2021, 05:51:18 pm »

Art for the win!!!


Calling them a par kind of led some of us a stray.

Jack Pollard

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Re: 110v Par Cans on a dimmer rack?
« Reply #10 on: February 11, 2021, 06:39:07 pm »

240v at 5 amps is only 1200 watts, but 8 ACL in series will draw around 2000 watts- you'd need a 2K dimmer.

Perfect thankyou.
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ProSoundWeb Community

Re: 110v Par Cans on a dimmer rack?
¬ę Reply #10 on: February 11, 2021, 06:39:07 pm ¬Ľ


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