I`m changing out a older service panel. I`m planning on installing a outdoor 200amp panel and droping from the bottom of the panel with 2- 2"LB`s for the wiring they will go through the brick work under the house at that point the pipe will be cut off and the wiring going to there circuits.Didn`t I read somewhere the wires must be connected to the box and this wasn`t allowed anymore? If this is the case someone please steer me in the right direction.Also where do I find the conduit fill for a sheathed cable vs regular fill?

This is a very very old house the inside walls aren`t 3 1/2 " deep or I`d be putting the panel indide they laid 2x4`s side ways and has boards on both sides.