I was trying to figure out the conduit fill for the (2) 6/3nmb's. On another thread 6/3nmb is listed as .3318 diameter. How exactly do I do the calculation for the conduit fill?
While I see requirements for conduits to be listed products, I am not aware of any requirements that a sleeve be made from listed conduit.Yes, provided it's electrical PVC and not plumbing or air-vac (which are not listed for the purpose).
If you intend to use SCH80 PVC, be sure to anticipate that its interior area is smaller than that of the same trade size of SCH40 PVC.
While I see requirements for conduits to be listed products, I am not aware of any requirements that a sleeve be made from listed conduit.
(2) Table 1 applies only to complete conduit or tubing systems
and is not intended to apply to sections of conduit or tubing
used to protect exposed wiring from physical damage.
You are trying to tell me that SCH40 pipe and SCH80 fittings will not interchange? I do not think so!This is not true. It's the outside diameter of the pipe that differs.
http://www.sprinklerwarehouse.com/PVC-Fittings-Sch-40-vs-Sch-80-s/7615.htmSchedule 40 PVC fittings have a thinner wall than the Schedule 80 PVC fittings. It is important to know that Sch 40 & 80 fittings will have the same inside diameters but different outside diameters. However, the opposite is true for PVC pipe in which the outside diameters are the same.
While I see requirements for conduits to be listed products, I am not aware of any requirements that a sleeve be made from listed conduit.
The NEC doesnt define a sleeve, however if the sleeve doesnt have to be of a listed conduit, one could get pretty crazy with sleeve materials. A straight piece of plumbing PVC, maybe okay... now add a plumbing 90 on each end.. still 8' long...still compliant? What If I have no conduit, but take a stick of straight 2" bamboo and hollow it out perfectly; still okay? Muffler pipe? Can I run a short section of garden hose to protect UF cable from house above grade penetration to trench depth? I say no, because none of those are "listed" per its chapter 1 definition.
or am I completely on the wrong line with that train of thought?
I agree and there is no maximum fill for sleeves. Chapter 9, Table 1, Note 2:
My bad. I was referring to gal
And I don't see anything that says plumbing PVC is not allowable as a sleeve....
Not trying to be argumentative here, I just dont see where, say, plumbing PVC is allowable as a sleeve, chase, riser (in OP's case; it's penetrating multiple floors). Wouldnt 352.2 definition and 352.6 disallow such an install?
Not trying to be argumentative here, I just dont see where, say, plumbing PVC is allowable as a sleeve, chase, riser (in OP's case; it's penetrating multiple floors). Wouldnt 352.2 definition and 352.6 disallow such an install?