"Fuel gas trainee" means "fuel gas trainee" as defined in RSA 153:27, VIII, namely, "any person engaged in the process of meeting the licensing requirements of RSA 153:27 through RSA 153:38, who shall work under the direct supervision of a licensed fuel gas fitter in the repair or installation of inside and outside piping from a gas meter or first stage regulator, and the repair or installation of residential and nonresidential fuel gas appliances and equipment, including but not limited to heating equipment systems, hot water heating systems, domestic appliances, or hearth equipment systems utilizing liquefied propane gas or natural gas."
N.H. Admin. Code § Saf-Mec 102.14