Electrical energy is the energy newly derived from electric potential energy or kinetic energy.When loosely used to describe energy absorbed or delivered by an electrical circuit (for example, one provided by an electric power utility) "electrical energy" talks about energy which has been converted from electric potential energy.
This energy is supplied by the combination of electric current and electric potential that is delivered by the circuit.At the point that this electric potential energy has been converted to another type of energy, it ceases to be electric potential energy.
Thus, all electrical energy is potential energy before it is delivered to the end-use.
In addition to the workplace hazards generally faced by industrial workers, electricians are also particularly exposed to injury by electricity.
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#Safety
Therefore, one of the most commonly taken by the electrical service is to check the stability of the electrical conductivity and the installation and control of the measuring equipment.
This is important not only for electric lines, which can be a source of electricity for homes and other buildings, but also in the case, for example, typically industrial facilities such as factories.The larger the scale of the electrical installation, including control electrical services must be carried out more accurately, since any failure threatens serious consequences..