There are three main job classifications for electrical workers, they are inside wireman, lineman, telecommunication workers.
Inside wireman preform electrical work on industrial, commercial, and private structures and installations. Work consists of installing conduit, wire, distribution and service panels, lighting fixtures, motors and controls. Much of the work may be outside, in all kinds of weather, and involve reading of plans, codes, and specifications.
Outside lineman are responsible for the distribution and transmission of high voltage power from the generation system to substations or occupancies. This is done either on poles or underground, in all kinds of weather. Their work requires good physical strength and the ability to work in a team effort.
Telecommunication workers works with and installs communications equipment in the fields of line construction (outside plant), splicing (construction and maintenance), installation and repair (residential and commercial), central office and customer owned premise equipment. The work is often in confined spaces and highly technical. It will also involve working outside in adverse conditions or handling heavy conductors and equipment. Regardless of the field of communications you choose to specialize in, all telephone workers and apprentices must learn to climb poles and work at heights.