In your pervious response (see pdf) your answer stated to keep the neutral and ground separate at the sub-panel. Being the novice I am, does that mean I only have to pull 2 wires or do I pull 3 including the original neutral?

Thanks,
Bob

A feeder to a subpanel needs two hots, a neutral of the same size, and an equipment ground sized to the circuit per NEC Table 250.122. A 200 Amp feeder will need a minimum of #6 copper or #4 aluminum. If you are using #4/0 SER cable you will be all set.