Been wanting to post this for a while. Just took some pics yesterday. I found the fixtures on craigslist. Came out of a school remodel. The garage is 28 x 35 12' high.
I hung 12 fixtures. 3 rows of 4. They hang about a foot down from the ceiling. Each fixture hold four 4' bulbs. 48 bulbs total. The bulbs are the Sylvania 4100 from Lowes. The middle row goes right between the door rails. The outside rows have a step in them so they are out side the door rails. Same amount of light if the doors are up or down.
They are plugged into six 4 gang outlets in the ceiling. Each outlet is controlled by 2 switches. 6 switches total.
Depending on how they are plugged in I can turn on any two lights in any pattern. Right now I have them staggered every other light. Could change them to pairs, but I like it this way for now. I can have three switches on and the whole garage is lit at half power.
If I just run in for a minute or two I usually just hit one center switch. Its enough light to find a tool or something.
If I'm working on one side I'll hit 2 or 3 switches in the area I'm in.
If i want to buff paint or something I hit them all and it's like daylight in there.