MA. Code.
Any fixture with a ballast needs additional support.
410.16 (C)-- Add second paragraph.
"In addition to,or in lieu of,the machanical means,electrical fixtures containing ballasts,other than simple flourescent reactance ballasts,shall be supported directly to the building structure by wire,chain or threaded rod of sufficiantstrength to carrythe fixture.Flourescent fixtures shall be supported at each end of a diagonal axis of the fixture. (luminaire, replaced with fixture by me)."
My understanding, is for fire fighter safety, knock the ceiling down and don't worry about the 30# fixture.
