I have 4 conductor tray cable , 3 number two and one # 6 bare ground in a jacketed tray cable, would 1 1/2 rigid conduit be suficient for this application, it runs about 200 ft

Without doing the conduit fill calcs, 1.5" conduit may be of sufficient size,but I would use a min of 2" for a pull like this.

To do the actual calcs, I need the outside dimension of the cable.