What is the most energy efficient T12 fluorescent tube? « on: November 26, 2021, 10:50:06 PM » Author: WorldwideHIDCollectorUSA
While imagining how nostalgic it was to think of fluorescent tubes as an energy efficient light source, I am wondering which white T12 fluorescent tubes are the most energy efficient in terms of lumens per watt.
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Desire to collect various light bulbs (especially HID), control gear, and fixtures from around the world.

DISCLAIMER: THE EXPERIMENTS THAT I CONDUCT INVOLVING UNUSUAL LAMP/BALLAST COMBINATIONS SHOULD NOT BE ATTEMPTED UNLESS YOU HAVE THE PROPER KNOWLEDGE. I AM NOT RESPONSIBLE FOR ANY INJURIES.

	Re: What is the most energy efficient T12 fluorescent tube? « Reply #2 on: November 27, 2021, 01:10:33 AM » Author: dor123
Triphosphors have the best efficiency of all phosphors.
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	Re: What is the most energy efficient T12 fluorescent tube? « Reply #3 on: November 27, 2021, 01:39:58 AM » Author: WorldwideHIDCollectorUSA
Quote from: dor123 on November 27, 2021, 01:10:33 AM Triphosphors have the best efficiency of all phosphors. Philips North America had Advantage 800 triphosphor F40T12 tubes that had a lumen output of 3,600 lumens.
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Desire to collect various light bulbs (especially HID), control gear, and fixtures from around the world.

DISCLAIMER: THE EXPERIMENTS THAT I CONDUCT INVOLVING UNUSUAL LAMP/BALLAST COMBINATIONS SHOULD NOT BE ATTEMPTED UNLESS YOU HAVE THE PROPER KNOWLEDGE. I AM NOT RESPONSIBLE FOR ANY INJURIES.

	Re: What is the most energy efficient T12 fluorescent tube? « Reply #5 on: November 27, 2021, 11:45:30 PM » Author: AngryHorse
In the UK, even back in the 90s, the 840, tri-phosphor, 100 watt, 8 foot tube was pushing out 95 lumens per watt!, I don’t understand why they were originally banned to be honest?? That was better than the 78 lumens per watt halides at the time!
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	Re: What is the most energy efficient T12 fluorescent tube? « Reply #7 on: November 28, 2021, 12:10:52 AM » Author: AngryHorse
I’m wondering if it was more the ‘mercury’ thing that efficiency?, some of the 5 foot tri-phosphor tubes of the early 2000s were that bright, that when used in twin battens, they weren’t easy to look at! The same goes with the PL lamp, but we can still get packs of those here
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Current: UK 230V, 50Hz
Power provider: e.on energy
Street lighting in our town: Philips UniStreet LED (gen 1)
Longest serving LED in service at home, (hour count): Energetic mini clear globe: 57,746 hrs @ 15/12/24

Welcome to OBLIVION

	Re: What is the most energy efficient T12 fluorescent tube? « Reply #8 on: November 28, 2021, 11:38:03 PM » Author: nicksfans
GE F96T12/XL/HL41/WM is among the most efficient T12s at 98 lm/W. It's so efficient that it actually meets EISA standards and doesn't have to rely on a CRI exemption. Sadly, I believe it is out of production. https://www.gecurrent.com/catalog/8-t12-instant-start-watt-miser-lamp-66858
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	Re: What is the most energy efficient T12 fluorescent tube? « Reply #10 on: November 30, 2021, 02:59:57 AM » Author: AngryHorse
And again, the 85s were the first they stopped making!!, doesn’t make any scene at all??
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Current: UK 230V, 50Hz
Power provider: e.on energy
Street lighting in our town: Philips UniStreet LED (gen 1)
Longest serving LED in service at home, (hour count): Energetic mini clear globe: 57,746 hrs @ 15/12/24

Welcome to OBLIVION

	Re: What is the most energy efficient T12 fluorescent tube? « Reply #11 on: December 14, 2021, 11:35:22 PM » Author: funkybulb
For me  it be full power light white T10 40 watts   But for T12 it be Maintance engineering alpine whites.   They say it bright enough to delamp a pair in the troffers to provide energy savings
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No LED gadgets, spins too slowly.  Gotta  love preheat and MV. let the lights keep my meter spinning.