Kale, Your guess is as good as mine. I also love the way the far light rests partly ATOP the bus duct (not the HVAC this time :-)). I'll try to get another pic....this was obviously a place rife with incompetent management, and a maintenance department that used dumpsters as their "parts house."
#121419 - 07/13/0509:27 PMRe: Lights Hung from Bus Duct
Is that one down by the "familiar" looking sprinkler a 2x4 troffer with no lense? Don't worry... ...I'm sure they'll hang the other side independently of the bus duct as soon as someone throws some jack chain in the trash.
#121420 - 07/14/0506:50 AMRe: Lights Hung from Bus Duct
What gave me the willies is that there is no visible means of support for that twin-tube strip light. I'm afraid to open it, and find someone mounted it with self-drilling screws- right where the PoCo feed comes in through the wall!