Hey guys. I have a 3 1/2 conduit coming up from the floor. The next door's panel is hanging over this conduit. So I need to mount a trough because a 90 is not an option, neither is 2 45's. Since my conduit is coming up from the floor into the bottom of the trough, and my conduit going into the panel is coming out of the top of the trough, what is the minimum size trough I can use. Do I use the angle calculation in 314.28(A)(2). If so what size box do I need. I'm thinking i need a 24w"x36l"x10"d.