Running -- supporting (?) EMT conduit
Well, again I have a question that the NEC code book seems pretty vague on. I’m looking at Article 348 and 370 – on running conduit.
What I’m doing is wiring my “pole barn” (see prev. posts & great ansrs/help on the “branch ckt” and the grounding”). The barn has what they call “girts” … these are the 2x6’s that run horizontally and are fastened to the “poles” (which are really laminated 6x6’s). Then the skin – the metal walls – is screwed to the girts from the outside. I’m putting outlets about every 8’ around the inside of the thing – with a metal duplex box screwed to the top of the girts. The conduit fits nicely into the 1 ½” space behind the pole.
The question; can the (1/2”) EMT just sit there … (an 8’ piece sure LOOKS fine – not real “wobbly” – suspended between the connectors on the ends of 2 boxes) … or do I need to bend it so it sits ON the 2x6 and then attach it with a strap thingy? If the Code requires attachment, how far can it span?
Then the overhead; The trusses are on 8’ centers. Can I span that 8’ (it’s 10’ above the floor), or does the run need to follow a wall and then go out to the ceiling box?
Thanks. J