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Three F14T12 lamps running in series on 40W preheat ballast

Three F14T12 lamps running in series on 40W preheat ballast

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Here are my Sylvania F14T12/R, F14T12/G, and F14T12/B running in series on my Advance L-140F-TP 30/40 watt preheat ballast.

This setup works quite well. Total arc voltage is 133V, more than what the ballast was designed to handle, so because it's an LPF ballast, it doesn't mind at all. Line current is 0.57A, well below the ballast's rated minimum, so the ballast should actually run cooler than normal as a result of the high arc voltage. Lamp current is 0.29A, lower than optimum, but still well within the acceptable range - the lamps are doing about 11 watts. All-in-all, I say the Advance L-140F-TP would make a fine ballast to run three 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_1274.JPG IMG_1273.JPG IMG_1270.JPG IMG_1023.JPG

Light Information

Light Information

Lamp
Lamp Type:3x F14T12
Fixture
Ballast Type:Advance L-140F-TP 30/40 watt magnetic preheat

File information

File information

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Filename:IMG_1270.JPG
Album name:themaritimegirl / Experiments, Projects, & Mods
Keywords:Lamps
File Size:71 KB
Date added:Jun 11, 2014
Dimensions:2050 x 711 pixels
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xmaslightguy
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^homebuilt fixture


GoL ATL
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Jun 11, 2014 at 10:49 PM Author: xmaslightguy
Do you have to manual-preheat to get this to work, or does it output enough voltage for starters to fire?

Colored Fluorescent's such as F40T12 Red or  Green or Blue are awesome...

themaritimegirl
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themaritimegirl themaritimegirl themaritimegirl
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Jun 11, 2014 at 10:54 PM Author: themaritimegirl
I did manual preheating. Starters would operate, but starting would be very finicky (and for more than two lamps, probably impossible) because every lamp depends on the other lamps to be in the right conditions (either preheating, or successfully running) to start. If one starter opened and that particular lamp started, and then another lamp's starter opened, but that lamp didn't strike, it would knock out the first lamp, and everything would have to start all over again.

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dor123
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Other loves are computers, office equipment, A/Cs


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Jun 12, 2014 at 02:57 AM Author: dor123
Usually, when operating two lamps on a single series preheat choke, each lamp still needs a seperate starter for series operation.
I don't know how it is possible with manual preheating, to have a single switch for all of the lamps together.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

themaritimegirl
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themaritimegirl themaritimegirl themaritimegirl
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Jun 12, 2014 at 10:44 AM Author: themaritimegirl
Use a multi-pole switch. Such a switch behaves like several switches controlled by one physical switch. For this setup, a momentary TPST (triple pole, single throw) switch will do the job.

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Flurofan96
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Aug 10, 2014 at 05:03 PM Author: Flurofan96
Colours look more accurate here

I will give LEDisease a taste of my shoe

themaritimegirl
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themaritimegirl themaritimegirl themaritimegirl
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Aug 10, 2014 at 07:08 PM Author: themaritimegirl
I just lit the lamps up to see - the comparison is difficult, but I still think the film gives a better depiction of what they look like in real life.

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