What does the letter E mean on a ballast?
What does the letter E mean on a ballast? Products with this mark are certified by UL to conform to Canadian safety requirements. E. Lamp-Ballast Starting Methods. Ballasts use one of three general methods, defined by the American National Standards Institute (ANSI), to start fluorescent lamps: preheat, instant-start, or rapid-start. How do I know which […]