Competency standards in the UK are defined by the Sector Skills council Summit Skills.
Qualifications certificated by awarding organisations such as City and Guilds and EAL are based on these National Occupational Standards.Once qualified and demonstrating the required level of competence an Electrician can register with the JIB (Joint industry Board) for an Electrotechnical Certification Scheme (ECS) card.
This is known as the AM2.Źródło: https://en.wikipedia.org/wiki/Electrician
During the installation of electrical systems at the construction site should remain authorized persons, regardless of whether they plan to put electrical installations in the home or in a big high-rise.In each place is a risk that there is a dangerous situation is the same.
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.There are two types of electric charges: positive and negative. Like charges repel and unlike attract.
The SI derived unit of electric charge is the coulomb (C).In electrical engineering, it is also common to use the ampere-hour (Ah), and, in chemistry, it is common to use the elementary charge (e) as a unit. The symbol Q often denotes charge.
Early knowledge of how charged substances interact is now called classical electrodynamics, and is still accurate for problems that don't require consideration of quantum effects. The electric charge is a fundamental conserved property of some subatomic particles, which determines their electromagnetic interaction.
The interaction between a moving charge and an electromagnetic field is the source of the electromagnetic force, which is one of the four fundamental forces (See also: magnetic field).Źródło: https://en.wikipedia.org/wiki/Electric_charge.