I went nuts and just swapped out about 200 bulbs in our shop to LED and all I can say is WOW
The lighting output is unreal - the difference is night and day, and better still here are the before and after ammeter test results:
T12 two bulb 4' shop light came in at .55 amps to run
T8 two bulb 4' shop light came in at .44 amps to run
Converted to very high output 3000 lumens 5000k clear LED's in the same fixtures (bypassing the pesky ballasts) the amp draw for almost twice as much light output came in at just about half the power draw at .31 amps!
Here are the links for anybody interested:
Conversion lamp that runs with the existing ballasts (meaning plug n play without any rewiring):
https://www.ledmyplace.com/products/...0k-clear-cover
Conversion lamp that runs straight 110V (bypassing the ballasts which is more efficient):
https://www.ledmyplace.com/products/...ns-5000k-clear
Besides being just simply bad ass, I'm looking forward to seeing our next electrical bill - should show a considerable difference! Yes, reworking all of the light fixtures to bypass the ballasts did take me three days, and it did cost a lot of money on the front side to convert the entire shop. People that walk in now are stunned as to how nice these lights are (look kick ass even in the fixtures that have the wrap around plastic covers).
