Grounding Help

[GOLFNUT83]

I have a 200a Outdoor Service Disconnect 120/240 outside of the house and a 200amp Main Breaker panel indoors and a Sub Panel in the Garage. Do they each need to be grounded to ground rods or how would I make sure that these are properly grounded? No ground rods have been used on the existing service. Also on the outside of the house a concrete sidewalk is directly under the Service Disconnect. I'm at a lost on how to properly ground this system.

 

[charlie b]

I am closing this thread in accordance with forum rules. This forum is intended for use by electricians and electrical contractors, inspectors, engineers, and vendors with their job-related duties. We are not allowed to provide how-to advice to persons who are not employed in this industry. If I have misjudged the situation, please send me a private message to explain.