Ray Heavican
New member
- Location
- Lincoln, NE. U.S.A.
Does anyone have pros and cons for ballast by-pass vs. using a ballast when using LED replacement lamps? Our line voltage is 277.
Does anyone have pros and cons for ballast by-pass vs. using a ballast when using LED replacement lamps? Our line voltage is 277.
One CON for bypassing ballast is that there are multiple wiring shemes to do so. Single or double end feed. Is it bypass ballast to a driver or direct feed to tombstones? I've not looked into 277v direct feed tubes.
I'm soon to try Plilips Instantfit 4000k in a school. I was planning to use an external driver until I discovered the shunted tombstones - they would have to be replaced in order to feed a single end.
It might not seem like much of a CON when choosing for install, but think of the guy who's gonna maintain it after the current guy. I started thinking about a handyman trying to figure out which lamps to purchase if a tube goes out. Leave the ballasts in and you just simplified it, imo
but think of the guy who's gonna maintain it after the current guy. I started thinking about a handyman trying to figure out which lamps to purchase if a tube goes out. Leave the ballasts in and you just simplified it, imo