msheets
PE Electrical
- Location
- Salt Lake City, UT, USA
- Occupation
- Electrical Engineer
I am working with a client on a 2MW ground-mount array. The owner has requested that a "grounding counterpoise" be installed around the perimeter of the array, with each rack bonded to it. The "counterpoise" will basically be a very large ground ring with ground rods. Is this a reasonable request? I have limited experience with this size array, and the other MW+ arrays we have done have not required it. It seems to me like a second grounding electrode system, and about 3,000' of copper. The racks are already going to be bonded to ground with the EGCs run with the positive and negative conductors back to the inverter, where the DC and AC ground bus bars are bonded internally, and there to the system ground.
Thanks in advance.
Thanks in advance.