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3X40w Monster!

3X40w Monster!

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This fixture originally had just sockets for two 40w RS lamps with a .73a Universal ballast. I used a hole saw to cut middle holes and add another set of sockets. The ballasts are interesting because for the outside lamps I used a Universal 631-LH-TC-P /HO ballast. The black box on the right is a "converter" I made using a No-Watt Quik Connect isolation transformer for the filament voltage and a 10 ufd 175w MH capacitor to reduce the 800ma to 435ma. The 350 OCV from the ballast means no more starting troubles on humid days....and a very interesting EOL show from failed lamps!

The second ballast for the middle lamp is a 2x40w Maxi-Miser ballast with an OCV of only 255v, thus making it practically worthless for two lamps starting reliably. On one lamp, it drives a bit harder...around 470ma and a bit hotter but I will monitor it. If it fails, I have other ballasts to use. This baby is bright!

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Filename:010_1.JPG
Album name:don93s / lighting components
Keywords:Gear
File Size:459 KB
Date added:Sep 11, 2013
Dimensions:1600 x 1200 pixels
Displayed:271 times
Date Time:2013:09:11 00:55:46
DateTime Original:2013:09:11 00:55:46
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Exposure Time:1/60 sec
FNumber:f 2.7
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Focal length:7.2 mm
Make:Canon
Model:Canon PowerShot S2 IS
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funkybulb
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Sep 12, 2013 at 05:26 AM Author: funkybulb
Imagine one of these with VHO lamps
It would be crazy bright, that for sure

No LED gadgets, spins too slowly.  Gotta  love preheat and MV. let the lights keep my meter spinning.

streetlight98
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Mike McCann


GoL Mike McCann 88219189@N04/albums
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Feb 05, 2014 at 07:21 PM Author: streetlight98
Is this a Cooper Metalux fixture? I have an NOS one from the 90s with an Advance 0.73A ballast. I believe it's from 1996 (no later than that at least...). It's installed in my garage with a pair of NOS Philips full mercury Econ-o-watt tubes. Since it's my only fixture that can run 34W lamps (and the ballast doesn't even get warm with them) I figured what the heck, i might as well use them up. It's cold up here now and with the garage door opened, the lamps never stop striating but with the door closed they eventually stop striating. The other fixture in the garage is my F20T12 full-power trigger start Western Electric Spec'ed fixture, running an NOS 3500K late 80s GE and an NOS mid-2000s Philips Alto soft white Kitchen & Bath and that fixture starts up with no flicker no matter what and the lamps are nice and bright! the smaller lamps probably do better in the cold tha the longer lamps anyway.

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

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