Do you need a CDL license to pull 40 trailer in North Carolina?

In North Carolina, a Commercial Driver's License (CDL) is required to operate any combination of vehicles with a gross combined weight rating (GCWR) of 26,001 or more pounds, provided the GVWR of the vehicle being towed is more than 10,000 pounds.

Therefore, pulling a 40' trailer will require a Class A CDL license in North Carolina if the combined weight of the trailer and the towing vehicle exceeds 26,001 pounds.