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F32T8 (25w Energy Saving) on Magnetic 2xF32T8 Ballast

F32T8 (25w Energy Saving) on Magnetic 2xF32T8 Ballast

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Lamps start up and run just fine to my surprise. They nearly instant start on hot restart. I wonder if it would be ok to use these lamps on magnetic T8 ballasts long term ?

Running voltage (Red-Blue)
226-228V

Kill-A-Watt
49W
0.42A
0.96PF

20180627_172815_HDR.jpg 20180214_183744_HDR.jpg 20180214_181727_HDR.jpg 20180205_211420_HDR.jpg

Light Information

Light Information

Lamp
Lamp Type:F32T8/25/WM
Fixture
Fixture Type:2 lamp strip
Ballast Type:Magnetic Rapid Start
Electrical
Wattage:2x25w
Voltage:120v 60Hz

File information

File information

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Filename:20180214_181727_HDR.jpg
Album name:Lightingguy1994 / Lamp comparisons, ballast fun & Experiments
Keywords:Lamps
File Size:271 KB
Date added:Feb 14, 2018
Dimensions:2464 x 1386 pixels
Displayed:100 times
Date Time:2018:02:14 18:17:27
DateTime Original:2018:02:14 18:17:27
Exposure Bias:0 EV
Exposure Time:1/540 sec
FNumber:f 1.8
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Focal length:4.42 mm
ISO:50
Make:LG Electronics
Model:LG-H831
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Lightingguy1994
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Jun 27, 2018 at 05:16 PM Author: Lightingguy1994
Has anyone else tried this ? Still wondering if it is OK on the ballast to do this
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Jul 22, 2018 at 09:52 AM Author: xmaslightguy
I've done it, but with an electronic...worked just fine there.

For magnetic:
Set it up with a pair of normal F32's, and let it run atleast an hour so the ballast gets hot.
let cool down fully
Try again using the F25's, but check how hot the ballast is after 30 minutes, as long as not hotter than before, let it run the rest of the hour & check again. (in reality being HPF it should actually run cooler with the shorter lamps)

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

Lightingguy1994
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Jul 22, 2018 at 09:53 AM Author: Lightingguy1994
Oh these are not shorter lamps, they are the 4 foot 25w T8s
xmaslightguy
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Jul 22, 2018 at 10:00 AM Author: xmaslightguy
Oh.. I was thinking they were the 3' F25T8, not the 4' version
Electrically I believe the 2 are actually very close to the same (basically ballast 'sees' a 3' lamp either way). Same thing as above, as long as the ballast is staying cooler than with normal lamps! Also I see the current is .42a, that alone is a good sign - I'm assuming normal for this ballast is .6-something?

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

Lightingguy1994
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Jul 22, 2018 at 10:03 AM Author: Lightingguy1994
The ballast lists 0.56, the ballast I used is this one

When doing a test with the 4ft 30 w ones, they did not start easily and seemed maybe a little to bright, but these 25w ones started and ran perfectly, brightness was normal for them
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Jul 22, 2018 at 10:19 AM Author: xmaslightguy
Should be a good ballast
I've noticed the 30w F32's are a bit harder to start too, they must have a higher starting voltage.

Since you have multiple ballasts, set 2 up side by side one with a pair of each type of lamp, then you don't have to wait & can do a better/direct temp comparrison..

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

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Jul 22, 2018 at 10:25 AM Author: Lightingguy1994
Good idea! I'll definitely do that
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