200amp Subpanel Question
Planning on relocating the existing 200 amp main breaker panel into our basement. To do this my plan is to install a new 200 amp panel in the basement as a main lug sub panel fed by a 60 amp double pole feeder breaker in the main panel. I would then run four 6 awg THHN conductors to the sub panel (2 hot, neutral and ground) in conduit (~15ft). I would then rewire the branch circuits to this new panel one by one (to minimize disruption to the house) and eventually hire an electrician to cutover the main service to the new panel and decommission the old panel. Sub panel neutral and ground will not be bonded, and permits will be pulled for the work.
Here is the panel I plan to use for the subpanel:
Here is the question: The panel data sheet lists the minimum wire size for the main lugs (A/B) as 4 awg. What is the preferred/correct way to wire this panel with 6 awg feeders? I am trying to avoid running 4 awg due to the limited space in the current load center and obvious cost.
That is for the assistance, it is much appreciated.