N.C. Gen. Stat. § 58-74-1

An administrator, executor, guardian, collector or receiver, or an officer required to give an official bond, or the agent or surety of such person or officer, may execute a mortgage on real estate, of the value of the bond required to be given by him to the State of North Carolina, conditioned to the same effect as the bond should be, were the same given, with a power of sale, which power of sale may be executed by the clerk of the superior court, with whom said mortgage shall be deposited, upon a breach of any of the conditions of said mortgage, after advertisement for 30 days.