This is related primarily to the fact that when working with electricity, even the smallest mistake can cause severe short circuit, which would be harmful to human health.
Usually created a power failure is unexpected and electrician seeking a solution to the problem moves groping.Therefore, for such a mistake it is very easy and you can tell that no theoretical knowledge is not able to prepare the employee to perfect the profession, because of some random events can not be predicted.
Electrical contractors employ workers in many capacities, determined by their level of training and experience.
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.
This estimate is often submitted as a bid on a project and serves as a scheduling and budget guideline as the project proceeds. Project Supervisor ? Oversees workforce to encourage safe and high-quality installations.Monitors progress to meet project deadlines.
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.
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.
Personal protective equipment provides electrical insulation as well as protection from mechanical impact; gloves have insulating rubber liners, and work boots and hard hats are specially rated to provide protection from shock.If a system cannot be de-energized, insulated tools are used; even high-voltage transmission lines can be repaired while energized, when necessary. Electrical workers, which includes electricians, accounted for 34% of total electrocutions of construction trades workers in the United States between 1992?2003.Źródło: https://en.wikipedia.org/wiki/Electrician.