Modifying certain provisions regulating electricians; defining or redefining certain terms; changing references to alarm and communication systems to power limited circuits or systems and eliminating the word electrical from the term electrical contractor; requiring and providing for the licensing of class A master and journeyman power limited technicians by the board of electricity, specifying applicant eligibility and examination requirements and fees; exempting heating, ventilating, air conditioning (HVAC) and refrigeration contractors and employees and cable communications company employees from electrician licensing requirements; exempting the installation, alteration or repair of electrical appliance units from regulation, defining electrical appliance units; making certain conforming and clarifying amendments (mk)