lighting fixture support

[smallfish]

Previous threads argue that by using emt, for example, in a vertical position in order to support an exit sign violates 358.12 (5). Set screw or compression fittings can loosen and the sign falls.
But can emt be used in a horizontal position in a grid fashion, supported by ceiling wires, the emt coupled together and the ends secured to side walls, in order to support light-weight, single tube, 4-foot flourescent fixtures by means of a conduit hanger (i.e. a "minerallac")?

 

[mivey]

As long as the grid is secure and the emt is not part of the wiring method, why not?

 

[cadpoint]

Local AHJ ordances over two feet support a box with threaded rod and a conduit backer.

I've trapized EMT across a ceiling but from my installed and flagged wire harness's, that had to be continual to the ceiling grid.

Id rather single support from threaded rod then get into wrapping ceiling wire, UGH!

But at times it way faster ...