Speaking of “suitable for use with service entrance conduit”. Is an off-set nipple “suitable for use with service entrance conduit”? NEC doesn't seem to touch on it in 230.43, but does UL list these thin die cast parts as “suitable for use with service entrance conduit”? I wouldn't use them as I don't think they have the physical strength to protect service conductors. As far as die cast parts go, a bolt on hub is made a lot stronger, like four or more times as strong as an off-set nipple. The area I work in will only accept IMC or RMC. And, I have never seen an off-set nipple used for any part of a service, other than on this forum a while back.
