Shoplight Bulbs

[chuck]

What is the difference between T-12 and T-8 shop light bulbs?
Can T-5 HO bulbs be used in regular shoplight fixtures?

[HayZee518]

T-8 and T-12 refers to the physical size of the tubes the HO is high output and requires a ballast of the same HO output. The T-5/HO will probably not "fire" with a standard ballast.

[Java_Bob]

and if you are using in a below 50 degree area, you will need cold start type ballasts

[HayZee518]

I have three 120 volt 8 ft VHO fixtures in my garage. they will fire at 6 below zero and do not flicker.