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Two F14T12 lamps running in series on 40W preheat ballast

Two F14T12 lamps running in series on 40W preheat ballast

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Here are my GE F14T12/CW and GE F14T12/D running in series on my Advance L-140F-TP 30/40 watt preheat ballast.

This setup works really well. Total arc voltage is 87V, more than the minimum the ballast was designed to handle. Lamp current is 0.39A, which is nearly perfect, and line current is 0.72A, which is below the ballast's rated maximum, so the ballast shouldn't run hotter than normal, either. All-in-all, I say the Advance L-140F-TP would make a fine ballast to run two F14T12 lamps in series.

I plan on conducting a bunch of experiments running various combinations of lamps in series on this ballast, measuring lamp and line current, and uploading photos of each. If anyone has any specific combo they would like to see, feel free to suggest it to me.

IMG_1270.JPG IMG_1023.JPG IMG_1356.JPG IMG_1164.JPG

Light Information

Light Information

Lamp
Lamp Type:2x F14T12
Fixture
Ballast Type:Advance L-140F-TP 30/40 watt magnetic preheat

File information

File information

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Filename:IMG_1356.JPG
Album name:themaritimegirl / Experiments, Projects, & Mods
Keywords:Lamps
File Size:153 KB
Date added:Jun 08, 2014
Dimensions:2050 x 1215 pixels
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TheUniversalDave1
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Jun 08, 2014 at 08:26 PM Author: TheUniversalDave1
I may have to try this if I ever cut down a 2x20 watt striplight.

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening

themaritimegirl
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Jun 08, 2014 at 09:08 PM Author: themaritimegirl
Just gotta be sure it's an LPF ballast that lists compatibility with the F30T8. A better ballast would overdrive the lamps and possibly run too hot.

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funkybulb
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Jun 11, 2014 at 12:30 PM Author: funkybulb
I find full power HPF can drive 2x 20 watt lamps perfecly. I am planning on doing 4 lamp
2x2x20 set up on tulamp ballast.

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

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