Commercial: Mechanical Contractor – Electrical Classification required for systems 50 – 600V; if system is greater than 600V then a general contractor license with the Public Utility Classification is required.
Residential: A company must have a Certificate of Authorization in electrical work; to qualify, the company must have a licensed electrician at each location who can do the work.
Licensing (Solar thermal)
Commercial: S.C. Code of Laws, 40-11-410. License classifications for MECHANICAL CONTRACTORS includes “Plumbing” which includes the installation, replacement, alteration, and repair of all plumbing including solar water heating when performed solely within property lines and not on public easements or rights of way except to make connections to water meters or sewer taps as allowed by the utility owner.
Residential: A company must have a Certificate of Authorization in plumbing work; to qualify, the company must have a licensed plumber at each location who can do the work.
Reciprocity: Alabama, Georgia, Mississippi, North Carolina, Tennessee, Texas, and Utah