N.C. Gen. Stat. § 35A-1271

The public guardian shall enter into bond with three or more sureties, approved by the clerk in the penal sum of six thousand dollars ($6,000), payable to the State of North Carolina, conditioned faithfully to perform the duties of his office and obey all lawful orders of the superior or other courts touching said guardianship of all wards, money or estate that may come into his hands. Whenever the aggregate value of the real and personal estate belonging to his several wards exceeds one-half the bond herein required the clerk shall require him to enlarge his bond in amount so as to cover at least double the aggregate amount under his control as guardian.