S.C. Code Ann. § 38-77-760: Decision of arbitrators.

After receiving the evidence, the arbitrators, or a majority of them, or the single arbitrator if the parties have agreed upon a single arbitrator, shall enter the decision on the back of the original claim and file it with the clerk of court, who shall enter it as a judgment on the records of his office. The arbitrator first appointed shall, on the day the decision is filed with the clerk of court, serve a copy of the decision signed by each arbitrator on each party to the arbitration, either personally or by registered mail, or as provided by agreement.