Wiring 220 in a Sub Panel

I am looking to upgrade the electrical service in my shed to 100amp sub panel and bring up to code the wiring from the meter and 200amp circuit breaker located on an electrical pole 30 feet from my shed.

I will be bring 4 wires to the sub panel in the shed 2 hot, seperate neutral and seperate ground

My question is on wiring a well. Currently there is 3 wires run to the pressure switch ( 1 black, 1 white and a 1 ground), then 3 wires ( 1 black, 1 white and a 1 ground) running to the 220 pump. When I put in the sub panel in the shed the neutral and ground will NOT be bond together.

The ground wire from the pressure switch does it go to the ground side of the sub panel?

Thanks in advance for the help.

 

Just the opposite I am Following code and I have talked to local county inspector and he said I am following the code. What I did not ask him about is well. I will stop and see him and get the answer to my question.

The county building inspector said the yellow wire connection located in the 200amp circuit breaker box at the pole. This ground/neutral needs to connect the separate ground and neutral wires that I will be running to the shed here AND connect another wire and run that to a ground pole directly under the box. 4 wires will run to the shed

The sub panel (in shed) the ground and neutral will NOT be bonded this comes from the building inspector and another ground rod will be installed off the sub panel ground.

I will be getting a building permit, just to get it inspected and insure it is done correctly and to CODE.

 

Thank you for the response, the explanation and answering my question. The explanation why the sub panel is not bond was very helpful makes more sense to me now.