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Philips F20T12/CW Alto

Philips_F15T8TL865_Plus.JPG Osram_25W_Yellow_GLS_Lamps.JPG Philips_F20T12CW_Alto.JPG Atlas_18_15W_Cooker_Tube.JPG EKCO_15W_Red_GLS_Lamp.JPG
File information
Filename:Philips_F20T12CW_Alto.JPG
Album name:SuperSix / My Files
Keywords:Alto / USA / 4300k / 20w / Halophosphate / Daylight / 33 / Tube / Philips / T12
Manufacturer:Philips
Model:F20T12/CW
Power Consumption:20W
Working Voltage:57V
Cap Type:Bi-Pin
Cap Finish:Green
Light Colour Temp:Halophosphate Daylight (33) 4300K
Comments:I gather these are your average 2' 20W in the US? Quite a novelty to see green capped tubes over here! Found in a box of mixed lamps for recycling!
Date / Code:K3
Country Of Origin:USA
Filesize:900 KiB
Date added:Aug 18, 2014
Dimensions:1600 x 951 pixels
Displayed:47 times
URL:https://allthingslighting.co.uk/atl/displayimage.php?pid=18713
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Comment 1 to 9 of 9
Page: 1

Kev   [Aug 18, 2014 at 08:08 PM]
Cool wonder where these were used?
Andy   [Aug 18, 2014 at 08:50 PM]
Yes, very interesting find over here! A nice lamp for the collection. Very Happy
Linear_SLI   [Aug 19, 2014 at 08:17 AM]
Recycling?, they look new!
funkylamp   [Aug 20, 2014 at 03:56 PM]
These are your typical CW lamp in USA and these are still made. around
In the US is used in Residential lighting and some commercial as well
In 2x2 troffers and in display cases
Andy   [Aug 20, 2014 at 07:58 PM]
Nearly every shop I have been to in the USA has these green ended Alto tubes installed! I think they are 4100k. The low power versions of these are absolute $hite such as the 34w which supposedly replaces the 40w and can overheat the ballast.
SuperSix   [Aug 20, 2014 at 10:33 PM]
Yes I was amazed to find these, in with a box of standard GE and Osram 18W 35s! No idea where they came from!
Kev   [Aug 20, 2014 at 11:01 PM]
Are they working?
Slyspark   [Apr 26, 2017 at 12:00 AM]
Got one of these off Eliot. I was surprised just how dim they are in comparison to a bog standard 20w/33 They seemed to me to be more colour 35 as well. Let it run for ages, but that was as bright as it got!
Tom   [May 23, 2017 at 03:19 PM]
The US cool white ~4100K certainly isn't as good as our old 4300K 33!

Comment 1 to 9 of 9
Page: 1

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