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How Many Lights Per Channel For Mr. Christmas


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I blew the fuse on my mr christmas box two years ago from too many lights, thats when i came up the "gizomofatch" as my neighbors call it. basically the mr christmas box does nothing more than trigger relays, The relay box has 3 seperate power sources coming into it . 2 channels/relays per power source for a total of six channels. the relays I use are pretty cheap 15A plug in style mechanical relays. I never blow Up the box and can pump almost anything I want thru it cause no draw goes thru mr christmas other than what it takes to run the relays I also have the box miced and run into fm modulator, If you listen to the video you can hear the relays clicking to the music, the cabinet next to the penguin is where everything is http://youtu.be/sejApRD5AyA

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According to Home Depots web site it can hold 1200 mini-lights per outlet for a total of 7,200 lights.

thanks very much I couldnt find it anywhere

Hmmm... Home Depot's calculators must not be working.

According to the actual manufacturer's site (http://www.mrchristmas.com/pdf/67791.pdf):

Each outlet can support 240 watts max- that's 6 sets of 100ct standard minis (40watts each). Your total watts for the whole unit is only 1440 (pg 9) so you can have 36 strings.

If you follow the Home Depot's listing (and several others, which is sort of alarming) and plug 7200 onto it you are doubling the capacity of the unit.

Unless it's a different unit (and it's the same item number so I don't think it is) you could have yourself some issues.

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Ryan,

It appears you are correct. Home Depot is using the wrong information on that unit.

I checked their light sets and they are 40 watt for 100ct standard minis also as you stated.

Good catch on your part. Home depot should correct their information before someone has problems.

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Ryan,

It appears you are correct. Home Depot is using the wrong information on that unit.

I checked their light sets and they are 40 watt for 100ct standard minis also as you stated.

Good catch on your part. Home depot should correct their information before someone has problems.

You're not kidding! There are several places that have that same listing- up to 7200 lights. Now I'm sure you can "find a way" to get more than the recommended strings on it but since the question wasn't "how can I modify it" I figured I'd check it out.

I had two neighbors in the last two years essentially melt these things which is why I went and checked.

To the original poster- more isn't always better. You can do a great display with 3000 lights (in fact I've seen some that truly opitimize the "less is more" theory). Another option is to use more than 1 Mr Christmas unit, although I'm not sure if you can "synch" them to play the same tune at the same time.

Good luck!

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You can sync more than 1 using the others as drones basically, a member did a write up on here a couple years ago about it. I'm running 3) units this year synched. I know all too well about pushing these units too hard, my original unit which is a deluxe unit I blew 1 of the triacs on it 2 years ago by overloading it. I replaced the triac last spring, wasn't too hard.

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Do not do this. If you do you will burn off insulation from the wires, overheat terminations, and destroy triacs, connectors, everything.

maybe but I use 8 Mr Christmas all with the bigger fuse for the last 3yrs never a problem.Just saying it may not be safe..its like using a inside cord outside
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  • 2 weeks later...

on my hay ride I use 1 Mr Christmas last year with over 10,000 lights on it. In my yard display I use 3 Mr Christmas for my roof and 2 arears in my yard. All I did was had them hook to a timer they arent sync but very close. And I turn the sound off the other 2 so unless you sit long enought you never know.The rest all use around my yard but only 1 other one with the sound on.

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I ran two Mr. C. last year and did the mod to have them syc. together. Used cat 5 cable to connect the two together. Also put the audio cut off switch and output plug to be able to broadcast audio. Do the mod to connect the two units together wasn't to difficult, just a little time consuming. I think I got photos of the mod somewhere on my computer if anyone is interested. Seemed to work out pretty good.

Hope to use some LOR this year in I can find some sequences along with the Mr. C.

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Wow - I've been using one of these Mr. Christmas controllers for 5 years now - the manual that came with it back then mentioned the 1200 lights per channel. I always thought it was a little high, given how many lights you can safely put on a 15 amp circuit, but if you always use the animation setting, the lights are rarely all on at once, and then only briefly. And I've run it successfully all this time following the 1200 mini-lights per channel guideline. Of course, I also replaced most of the lights on channels 1 and 2 with LEDs, and I'm slowly replacing the other lights with LEDs, so that might have helped me stay under max load...

In any case, I'm overdue to replace it with a LOR setup... although I'm also tempted to follow some of the other posters' suggestions on modding good old Mr. Christmas!

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  • 2 weeks later...

The orange cords are the outgoing power to the lightsI have several sets of cords bundled together in sets of six all lettered a-f on each end.... It makes it neater and easy to set up the colors....i know all green lights are on A.... Blue is on B,etc.... Each relay is 15A with 120v coil so Mr Christmas can trigger the relays directly... Theres also three other orange cords coming in to supply power to the relays so I dont put it all on one circuit of the house

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