R.I. Gen. Laws § 5-6-14: Work on premises covered by limited-premises certificates.

Electricians regularly employed by firms or holders of a Certificate C may install and maintain any electrical wiring, conduits, and appliances, or make any repairs that are required in and on the property of those firms; provided, that a permit has been approved and issued by the municipality to ensure that all code and safety policies are upheld and that electricians holding journeyperson’s licenses are complying with this chapter. Class C certificates are not valid for new external construction projects on a firm’s premises exceeding two thousand (2,000) square feet.