S.C. Code Ann. § 31-1-40

In municipalities and counties where building, construction, or tax permits are issued no supplier of electricity in this State may connect electrical power to a manufactured home after April 1, 1972, unless the owner of the manufactured home presents to the supplier of electricity a permit which may be part of a building, construction, or tax permit from an authorized officer of a municipality or county where the manufactured home is located that the manufactured home meets the requirements of Chapter 29 of Title 40. A sworn affidavit or other proof from the owner of the manufactured home that it bears the label or seal or compliance number of an approved independent third party testing and inspecting agent or of a foreign state granted reciprocity or a HUD manufactured home label is sufficient evidence of compliance for the municipal or county official to issue the electrical permit. The governing body of a municipality or county of this State shall designate an officer to issue the permit. This section does not apply to a manufactured home if it has been connected to electricity before April 1, 1972. An affidavit of the owner of the manufactured home that it has been connected before that date is satisfactory evidence for the officer of the municipality or county to issue the certificate.