Westinghouse F25T12 black enders « on: March 07, 2012, 04:47:35 PM » Author: Powell
A local hardware store has a lot of these. They are longer than a 20 watt but shorter than a 30.  What kind of ballast can I run these with? These were originally for preheat and I at one time had a fixture..... Powell
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	Re: Westinghouse F25T12 black enders « Reply #1 on: March 08, 2012, 06:43:08 PM » Author: funkybulb
I would use Full power preheat circline ballast. wich is hard to find.  you can use Lpf .67 amp RS ballast wich is run the tubes at half power for F40s
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No LED gadgets, spins too slowly.  Gotta  love preheat and MV. let the lights keep my meter spinning.

	Re: Westinghouse F25T12 black enders « Reply #2 on: March 08, 2012, 08:59:22 PM » Author: Silverliner
I have a F25T12 fixture that takes in the 33 inch lamps. The ballasts are simple chokes like in the F14T12-F20T12 fixtures, but will need to check and see what lamps they are rated for. They use the FS-25 starter rather than the FS-2 starter though.
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	Re: Westinghouse F25T12 black enders « Reply #3 on: March 08, 2012, 11:35:19 PM » Author: icefoglights
I have a Robertson choke ballast that was rated for 19, 20, 22 and 25 watt lamps.
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	Re: Westinghouse F25T12 black enders « Reply #4 on: March 14, 2012, 02:22:13 PM » Author: DieselNut
Somewhere, I have a ballast for these tubes also.  They were for appliances and I got mine out of an old snack vending machine, along with its FS-25 starter.
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Preheat Fluorescents forever!
I love diesel engines, rural/farm life and vintage lighting!

	Re: Westinghouse F25T12 black enders « Reply #5 on: March 14, 2012, 02:25:26 PM » Author: Powell
I was thinking of making me a fixture for these......
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	Re: Westinghouse F25T12 black enders « Reply #7 on: March 21, 2012, 01:23:35 AM » Author: funkybulb
@ MV the black ender refers to the black end caps on fluorescent tubes that made out of bakelite or plastic    sylvaia used baklite black end caps back in the 50s, while westinghoue fluorescent lamps used black endcaps  until philip take over. so there they are really easy to spot when you are searching for classic lamps  the newer westinghouse that you see today are made by abco known as faux westinghouse as the qualty dont compare.
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No LED gadgets, spins too slowly.  Gotta  love preheat and MV. let the lights keep my meter spinning.

	Re: Westinghouse F25T12 black enders « Reply #8 on: March 21, 2012, 02:24:01 AM » Author: Medved
The bakelite end caps were quite common on krypton T8 lamps made by Tesla in 80's. But I do not see that as a good idea - The black plastic absorb light, so in mildly diffused refractors it create black spots visible from outside. Aluminum endcaps do not do this effect. - The plastic "liked" to crack
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No more selfballasted c***