S.C. Code Ann. § 20-7-1530
(A) In making a decision regarding custody of a minor child, in addition to other existing factors specified by law, the court must give weight to evidence of domestic violence as defined in Section 16-25-20 or Section 16-25-65 including, but not limited to:
(B) The absence or relocation from the home by a person, against whom an act of domestic violence has been perpetrated, if that person is not the primary aggressor, must not be considered by the court to be sufficient cause, absent other factors, to deny custody of the minor child to that person.
Construction and effect of statutes mandating consideration or creating presumptions regarding domestic violence in awarding custody of children. 51 ALR5th 241.