The 200a main disconnect is mounted under the meter on the power pole. It has spaces for 8 breakers and a neutral bus bar. The only ground I see is from a rod at the base of the pole to the meter. I've run 50' of #8 2wireuf from the 30a rv pedestal to the main in PVC conduit. The neutral and ground are separated at the pedestal. I intend to put the neural and ground on the single bus bar. The question is do I run #4 bare from the existing rod to the neutral bus bar in the main and put in 2 at the pedestal.