NEC 358.30 EMT Supports

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The Doc

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I have a good topic for discussion for a lovely Friday.
NEC 358.30 ? EMT shall be securely fastened in place.
That is the gist of the referenced article above, BUT...
What would a contractor do in the event that the item supporting the EMT needs to span a distance greater that would be typical? Say a mechanical room with a ceiling height of +/- 40 feet and said raceway needs to attach to a mechanical piece of equipment that is floor mounted in the center of the room.
3/8" all thread is attached from a beam clamp and spans a distance of +/- 30' with 7/8" uni-strut along the all-thread to strap the conduits to. These is not any structural steel within 15' or more laterally from where the EMT drops down from the ceiling.

Any thoughts, comments and discussions would be appreciated :)
 

jusme123

Senior Member
Location
NY
Occupation
JW
.....first question would be, what is the equipment in the middle of the room? Is it possible to come from floor below, even if you have to go down wall, thru floor and up into unit? Is it possible to switch to rigid metal conduit, which would allow a 20' verticle span between supports?
 
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