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http://constructionmanuals.tpub.com/14027/css/Conduit-Supports-and-Installation-Methods-118.htm
LOCATION OF CONDUIT SUPPORTS The Code states that rigid-metal conduit will be firmly secured within 3 feet of each outlet box, junction box, cabinet, or fitting. The Code permits this distance to be increased to 5 feet where structural members do not readily permit fastening within 3 feet.
https://www.electricallicenserenewal.com/Electrical-Continuing-Education-Courses/NEC-Content.php?sectionID=102.0
348.30(A) Fittings as a Means of Support. 348.30(A) Fittings as a Means of Support. Code Change Summary: Code language was added to address the use of flexible metal conduit fittings as a means of support.
http://wiresizecalculator.net/tables/conduitsupportstable.htm
These tables list the maximum distance between conduit supports for rigid metallic and non-metallic conduit. Supports for Rigid Metallic Conduit Source: NFPA 70, National Electrical Code…
https://www.electrical-knowhow.com/2013/06/conduit-fittings-and-supports.html
Rigid metallic conduit and electrical metallic tubing both require support. Conduit should be fastened by straps to the ceiling or wall, or supported on hangers from the ceiling at least every 10 feet (Figure 11). Conduit should be fastened within 3 feet of a box (5 feet of unbroken lengths are allowed if structural members do not permit ...
https://www.ecmweb.com/national-electrical-code/code-basics/article/20896214/2011-nec-revisions-for-boxes-conduit-bodies-and-handhole-enclosures
The allowance for a raceway-supported box or conduit body in 314.23(E) has been one of the more difficult rules for a Code user to read, due to the length of the rule and the number of technical requirements found in it. The exception for the support of conduit bodies has been equally difficult.
https://steeltubeinstitute.org/steel-conduit/resources/installation-guides/support-raceways/
Supporting Follow all Code requirements for spacing of supports and frequency of securing RMC, IMC and EMT. The requirement to securely fasten raceways within the specified distance from each “termination point” includes, but is not limited to, outlet and junction boxes, device boxes, cabinets, and conduit bodies. Each raceway shall be so secured.
https://www.electriciantalk.com/f5/supporting-emt-21229/
Feb 24, 2011 · They are wrong but go back some code cycles and they would be right. ... and everyone else. I do not think couplings are terminations; one support per stick is fine. Conduit bodies are LBs and LRs, etc. where I would agree you do need a strap within 3'.-John _____ To view links or images in signatures your post count must be 10 or greater. ...
http://www.cooperindustries.com/content/dam/public/bline/Resources/Library/catalogs/bolted_framing/strut_systems/rd-rigidsteelconduitimc.pdf
*Conduit plus weight of heaviest conductor combination as specified by the National Electrical Code. Rigid and Intermediate Metal Conduit shall be supported at least every 10 feet (3.05 m) and within 3 feet (914 mm) of each outlet box, junction box, cabinet, or fitting, except for straight runs of conduit connected with couplings which may be
http://www.cooperindustries.com/content/dam/public/bline/Resources/Library/catalogs/fasteners_and_fixing/spring_steel_fasteners_NA/NECRequirements.pdf
Reprinted with permission from NFPA 70HB14, the National Electrical Code ... Support wires that do not provide secure support shall not be permitted as the sole support. ... intermediate metal conduit, or rigid nonmetallic conduit having a length not exceeding 3.05 m.
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