S.C. Code Ann. § 23-11-30: Bond.

The sheriffs of the several counties, before receiving their commissions, shall enter into bonds to be executed by them and any number of sureties, not exceeding twelve nor (except as provided in Section 8-3-90) less than two, to be approved by a majority of the governing body of the county in the sum of ten thousand dollars, and every sheriff shall procure other satisfactory security when duly required. Such bond shall be filed in the office of the State Treasurer, duly executed and approved, within thirty days from the time the sheriff-elect receives notice that the election is declared.