S.C. Code Ann. § 63-3-530
(A) The family court has exclusive jurisdiction:
(18) to make an order for support of a husband or wife and children by his or her spouse, even though he or she may have left the home, in cases where the spouse's conduct or condition or his or her cruel or inhuman behavior made it unsafe or improper for the deserting spouse to continue to live with him or her.
Such orders may require either spouse or any other party to the proceeding:
(31) to require spouse to furnish support or to be liable for nonsupport, as provided above, if, at the time of the filing of the petition for supports: