Definition (Source: Wikipedia)
***An electrician is a tradesman specializing in electrical wiring of buildings and related equipment. Electricians may be employed in the installation of new electrical components or the maintenance and repair of existing electrical infrastructure.[1] In the United States electricians are sometimes referred to as Inside Wireman as opposed to Outside Linemen who work In the United States licensing requirements for construction work are controlled by local building officials. Typically, certain types of electrical work are only permitted to be performed by a Journeyman or Master electrician. The requirements for becoming a journeyman or master electrician, and the types of work they are permitted to do, vary between states; however, there are often interstate reciprocity agreements. Not all states offer a statewide journeyman or master electrician license.
Before electricians are allowed to work without supervision, they are usually required to serve an apprenticeship lasting from 3 to 5 years under the general supervision of a Master Electrician and usually the direct supervision of a Journeyman Electrician. Schooling in electrical theory and electrical building codes is usually required to complete the apprenticeship program. A Journeyman electrician is a well rounded craftsman trained in all phases of electrical construction installation in various building styles and maintenance of equipment after installation. A Journeyman is usually permitted to perform all types of electrical work except design of electrical systems[2][3]. A Master Electrician must first be a Journeyman and usually has a minimum of two years more experience and has to pass further testing. A Master Electrician is further trained in layout, estimation, and design of electrical installations.
Certification usually requires experience and a passing score on a written test. The written test usually includes questions about the NFPA's National Electrical Code, and load calculations.
on electric utility company distribution systems at higher voltages. "Electrician" is also used as the name of a role in stagecraft, where electricians are tasked primarily with hanging, focusing, and operating stage lighting. In this context, the Master Electrician is the show's chief electrician. Although theater electricians routinely perform electrical work on stage lighting instruments and equipment, they are not part of the electrical trade and have a different set of skills and qualifications from the electricians that work on building wiring.