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Therefore, this electrician is responsible for the oversight of electricity on site and very often his help is invaluable, because it allows the reception of installations, without which the building does not meet the required functions.
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. 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.Submits required reports and forms.Źródło: https://en.wikipedia.org/wiki/Electrical_contractor
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..