Md. Code, Business Occupations and Professions § 6–302

(a) In a local jurisdiction that requires local registration and has qualified to register electricians locally under § 6–103 of this title, the State license, while the State license is in effect, serves only as a mechanism that helps a licensee in obtaining a local registration under §§ 6–601 and 6–602 of this title.

(b) If a county or municipal corporation does not require local registration, the State license, while the State license is in effect, authorizes the licensee to:

(1) provide electrical services; or

(2) be the representative of another person who engages in the business of providing electrical services.