In addition to the workplace hazards generally faced by industrial workers, electricians are also particularly exposed to injury by electricity.An electrician may experience electric shock due to direct contact with energized circuit conductors or due to stray voltage caused by faults in a system.
An electric arc exposes eyes and skin to hazardous amounts of heat and light.
Faulty switchgear may cause an arc flash incident with a resultant blast.Electricians are trained to work safely and take many measures to minimize the danger of injury. Lockout and tagout procedures are used to make sure that circuits are proven to be de-energized before work is done. Limits of approach to energized equipment protect against arc flash exposure; specially designed flash-resistant clothing provides additional protection; grounding (earthing) clamps and chains are used on line conductors to provide a visible assurance that a conductor is de-energized.
Electrical contractors employ workers in many capacities, determined by their level of training and experience.Some common jobs include: Apprentice Electrician ? Receives on-the-job training and classroom instruction from licensed journeymen or master electricians about how to install, modify, repair, and maintain power and lighting systems.
Most apprentice programs last 3 to 5 years and apprentices earn wages during this training period. Journeyman Electrician ? Installs, modifies, repairs, and maintains power and lighting systems.Reads blueprints, terminates cable, and installs and troubleshoots control wiring from drawings.
Has completed the apprentice program and holds a journeyman's license (according to state requirements) and supervises apprentices. Estimator ? Calculates a project's duration and cost, including materials, overhead, and labor.
Submits required reports and forms.Źródło: https://en.wikipedia.org/wiki/Electrical_contractor