This 20kw generator was located on the side of the garage. We maintained our setbacks with no problems.
We tied into the main panel with a 200amp transfer switch.
Our gas meter was tied in with 1 1/4″ gas line to feed the generator. Our gas inspector inspected the system for leaks.
Whole panel surge arrestors will protect the homeowner from power surges. (Located above panels x2) They already had to replace appliances after the last surge happened earlier this year.