S.C. Code Ann. § 14-7-260

Except as otherwise expressly provided, the jury commissioners shall draw and summon at least seventy-five persons to serve as petit jurors to attend at one and the same time at any court. The chief administrative judge or the presiding judge of that circuit may increase or decrease the number of jurors drawn and summoned if he considers it necessary; however, at least seventy-five jurors must be drawn and summoned.