Ron,
I have experience paralleling steam, diesel and gas turbine units of vastly differing capacities on one site without any problems whatsoever.
You just have to tweak your control systems properly otherwise the turbine may try to hog the load.
Go for it.
Colin.
Good responses but why use and MCCB or ACB as an incomer when an isolator would do ? Presumably there will be upstream devices providing cable protection. Introducing an MCCB or ACB as an incomer only messes up discrimination within the power system.