Step 1 - Determine Your Type of Fluorescent Fixture
In order to calculate your total fixture wattage, you need to know what the wattage is of the existing system you have in place. There are numerous variables, but typically we see T-12 fluorescent lighting in most places. Even if you are aware of that you use T-12's, knowing what type of T-12 fixture is very important. Here are the 3 that we run into most