I am working on a desin where I will have (3) 1-1/4" conduits laying side by side clamped to unistrut. Is there a table or location where I can determine the width of the unistrut needed for these conduits? I'm assuming that I need to consider the O.D. of each conduit but I'm not sure what spacing is required between conduits for clamps and installation. Would assuming a 1/2 between the O.D. of each conduits be enough for clamps and installation of the conduits.
Also these unistrut brackets will be installed on a channel spanning between 2 beams. How often does the NEC recommend installing these unistrut brackets to support the conduit? Is there an table in the NEC?
What is the maximum length that a 1-1/4" conduit can span between two vertical beam supports without additional support? Is this limited to just (1) 10" section of conduit or can you have a longer piece spanning between 2 beams witout any support?
Also these unistrut brackets will be installed on a channel spanning between 2 beams. How often does the NEC recommend installing these unistrut brackets to support the conduit? Is there an table in the NEC?
What is the maximum length that a 1-1/4" conduit can span between two vertical beam supports without additional support? Is this limited to just (1) 10" section of conduit or can you have a longer piece spanning between 2 beams witout any support?