Generally the maximum support spacing requirement for rmc rigid metallic conduit of trade size 1 is 10 ft but for straight runs with threaded couplings this spacing is increased to 12 ft.
Want to use rmc conduit as patio roof support.
Rigid metal conduit and intermediate metal conduit are heavy duty rigid metal tubing used for structural applications typically outdoors.
Not a ul 6 requirement.
Aluminum rmc beats steel rmc in this application too.
Nothing in the nec states that you cannot use the same supports for conduit as for other systems.
Back injury risk upon a roof top emt is usually the way to go.
Wheatland trade sizes 3 through 6 are ul listed for use with directional boring equipment.
With the first porch roof support in position you can then continue to work along the porch.
Rigid metal conduit weights and dimensions 10 lengths for information only.
Rigid metal conduit is manufactured to produce a 10 3 05 m length of conduit when a standard coupling is attached.
Patio roof post column options in addition to the ever popular wood posts for outdoor structures can be made from other materials including concrete and steel.
Continue installing porch roof supports.
Conduit supports and installation methods.
They are used for the structural piping that houses the wiring for the home s connection to the utility service lines.
To install conduit overhead and underground properly you need to review the appropriate articles of the code.
And of course direct lay down is prohibited upon a membrane roof.
Standard 20mm plastic conduit will be fine another method would be to use a cable type called hi tuff which is made for outdoor use you wouldn t really need to use conduit with that as long as it s not likely to suffer mechanical damage although it would provide additional protection of course.
You will need to make sure that each of the posts is plumb.
If your home has overhead service wires coming in from the utility that connect to a pole on top of the roof the pipe that extends above the roof is probably rmc or imc.
As stated in section 370 23 d the enclosure s size cannot exceed 100 cubic inches.
Both rmc and imc are joined with threaded connections.
Imt has largely replaced rmc in new construction.
It s not as if a fork lift is going to back into it.
Rigid metal conduit and intermediate metal conduit are heavy duty conduits made of galvanized steel.
370 23 d 2 enclosures fastened to support wires an enclosure may be fastened to a suspended drop ceiling support wire while meeting the requirements of sections 300 11 a and 370 23 d 2.
4 grc is a two man portage imho.
Use 2 inch carriage bolts to secure the posts to the mounting brackets.
There should never be more than the equivalent of four right angle bends between outlets or fittings.
The enclosure must be securely fastened to the support wire with a fastening device specifically identified for the.
Most often alternative materials are chosen because the structure needs additional strength or for style reasons to better complement the home s architectural style or landscape.
