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Advance 277 volt T8 ballast

Advance 277 volt T8 ballast

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This ballast originally came in a Lithonia 1-lamp F32T8 vaportight fixture my dad bought for 10 bucks at a (now burned to the ground) junk store in Seward, AK in the spring of 2013. It got wired up to 120v and as you might imagine it did absolutely nothing. In fact, a few months later, when I finally got around to trying to figure out why that light didn't work, I was kinda expecting to discover a 277 volt ballast and when I pulled the channel cover off I was like 'Lookie here!'. So I ended up taking it out and sticking in a 120v Advance unit for two F40T12 lamps, wired for one (Electronic but the wiring is identical to a magnetic rapid start ballast).

I have been able to successfully power this 277v ballast using a 400w MV/MH highbay head which is 120/208/240/277v multitap, using it as a step-up transformer by wiring it to 120v like normal and then connecting this ballast to the 277v tap for the hot and wiring it back to the 120v neutral. Don't ask me how it works, I just read somewhere it does, tried it and it did! I've used it as my fryer ballast for EOL F15T8s, F20T12s, F34T12s, and F40T12s many times wired that way.

IMG_0620.jpg PICT0042~0.JPG SAM_0165.JPG 2015-05-29_18_23_06.jpg

Light Information

Light Information

Manufacturer:Advance Transformer
Lamp
Base:Linear fluorescent
Fixture
Ballast Type:Electronic instant-start
Electrical
Wattage:1X17/25/32w
Voltage:277v
Current:.27a

File information

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Album name:ace100w120v / Ballasts
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File Size:439 KB
Date added:Sep 08, 2015
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Solanaceae
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Sep 08, 2015 at 04:48 PM Author: Solanaceae
I've used a 250w ballast as a step up to test a 175w Postline of 208v. Worked great!

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ace100w120v
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Sep 17, 2015 at 08:33 AM Author: ace100w120v
Yeah, it's handy for home testing where we don't usually have 3 phase!
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Oct 15, 2015 at 11:20 PM Author: DetroitTwoStroke
Yep, I've used a multi-tap ballast as a step-up transformer before, too. It works great!

Pride and quality workmanship should lie behind manufacturing, not greed.

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Oct 16, 2015 at 09:50 AM Author: ace100w120v
Luke, I think you're the one who told me how to wire it up to do that, now that I think about it!
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Oct 16, 2015 at 11:51 PM Author: DetroitTwoStroke
I might have...
I used to have a couple of cheap 250W quad-tap MH ballasts that I rescued from a dumpster at a small theater I worked at in a park. I used them for many tests, including use as a step-up transformer. I once wired them in parallel to power a 1KW MH lamp, but I initially got the wiring wrong (I might have crossed the taps). When I plugged them in, the lights in the garage dimmed, and I quickly pulled the plug!
Once I wired them correctly, they powered the 1KW lamp just fine. I later scrapped those ballasts, since they were junky anyway. They were originally replaced because they kept burning out bulbs.

Pride and quality workmanship should lie behind manufacturing, not greed.

ace100w120v
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Oct 17, 2015 at 12:46 PM Author: ace100w120v
Oh wow interesting. Fine? You mean half power right?

I have absolutely no idea how to wire any HID ballast offhand...fluorescents I do though...single lamp preheat, single and 2-lamp rapid/trigger start, 2-lamp slimline...all without consulting the wiring diagram!
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Oct 17, 2015 at 11:27 PM Author: DetroitTwoStroke
I had three 250W ballasts, with the output wires from the capacitors tied together. The 1KW lamp warmed up to very bright, but I'm sure it wasn't full power.
With the wiring diagram, most of them are easy to wire. After doing it enough, the wiring kind of sticks in your head. Pretty much like learning anything, really.

Pride and quality workmanship should lie behind manufacturing, not greed.

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Oct 18, 2015 at 12:34 PM Author: ace100w120v
Yeah, same for fluorescents...it sticks in my mind.
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T12 are and always will be my favorite bulb


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Dec 15, 2016 at 11:53 AM Author: Lightingguy1994
when you use a multi tap HID ballast as a step up transformer, if the ballast uses a power factor correction capacitor, do you still hook that up anywhere or no. So far is sounds like I would connect the 120 lead as nornal and use the 220v that comes out of another voltage tap wire on it lol. Id like to try it someday when needed

I'm not lazy! I'm on energy saving mode!

ace100w120v
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Dec 15, 2016 at 03:51 PM Author: ace100w120v
Apparently so, because I used a highbay head as one that was definitely a CWA, so the cap was still in use.
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Dec 22, 2016 at 03:01 PM Author: DetroitTwoStroke
Depends on where the cap is in the circuit. I think most CWA have the cap in series with the lamp, so the cap wouldn't be used if you're only using the ballast as a step up or step down transformer. I assume the transformer would then operate as LPF, but I don't know for sure.

Pride and quality workmanship should lie behind manufacturing, not greed.

ace100w120v
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Dec 22, 2016 at 05:48 PM Author: ace100w120v
Ya know, Luke, you have a really good point! The cap is in series with the lamp, DUH! I should know this, I just wired one up new out of box the other day!
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