Have Federal Contract on Air Force Base. Reference 358.30.(B) where it states horizontal runs of EMT securely fastened within 3 ft of termination points. Inspector is stating a conduit termination is the end of a conduit - here is his reasoning:
Although the code does not list a specific defininition for termination point, the specified TIA-569 does. The Steel Tube Institute discusses it in their manual also. The contractors conduit manufacturer discusses it in his installation guide.
1. NEC 358.30(B) states to securely fasten the conduit within 3' of termination points. The code handbook has a picture and not one coupling or fitting has a support shown in the picture that is more than 3'. The picture even has dimensions on it.
2. TIA 569-V paragraph 22.214.171.124 states metallic conduit shall be terminated with an insulated bushing. The end of the communication conduit does not have to be installed in a junction box or a device.
3. The Steel Tube institute paragraph 4.4.1 notes that a "termination point" is not limited to outlet and junction boxes, device boxes, cabinets and conduit bodies. The Steel Tube Institute also considers conduit and tubing as the same item as the title of section 4.4 states. ("Support of Raceways")
4. The contractors conduit manufacturers code interpretation on supports states to support the conduit within 3' of a conduit termination. They did not say 3' from a conduit termination with a box or device on it.
In summary, the conduit should be supported within 3' of the conduit/tubing termination point. Where the conduit ends is a termination point. If you cut a 10' piece of conduit, the end of that conduit is the termination point. If you install a coupling on the end of the cut piece (termination point) you need a support within 3' of that termination point.
We have never had an interpretaton such as this on any project - ever. Does anyone have any experience with this issue - stating that every coupling is a termination point of a conduit?