Whois & Analysis for sandc.com

Electric power transmission is the bulk movement of electrical energy from a generating site, such as a power plant, to an electrical substation.

The interconnected lines which facilitate this movement are known as a transmission network.

This is distinct from the local wiring between high-voltage substations and customers, which is typically referred to as electric power distribution.

The combined transmission and distribution network is known as the "power grid" in North America, or just "the grid".

In the United Kingdom, the network is known as the "National Grid".

The electric power industry is the generation, transmission, distribution and sale of electric power to the general public.

The electrical industry started with introduction of electric lighting in 1882.

Throughout the 1880s and 1890s, growing economic and safety concerns lead to the regulation of the industry.

Once an expensive novelty limited to the most densely populated areas, reliable and economical electric power has become a requirement for normal operation of all elements of developed economies.

Electric power distribution is the final stage in the delivery of electric power; it carries electricity from the transmission system to individual consumers.

Distribution substations connect to the transmission system and lower the transmission voltage to medium voltage ranging between 2 kV and 35 kV with the use of transformers.

Primary distribution lines carry this medium voltage power to distribution transformers located near the customer's premises.

Distribution transformers again lower the voltage to the utilization voltage of household appliances and typically feed several customers through secondary distribution lines at this voltage.

Commercial and residential customers are connected to the secondary distribution lines through service drops.

Customers demanding a much larger amount of power may be connected directly to the primary distribution level or the subtransmission level.

Mains electricity by country includes a list of countries and territories, with the plugs, voltages and frequencies they use for providing electrical power to small appliances and some major appliances.

Every country has differing rules regarding distribution of electricity for portable appliances and lighting.

Voltage, frequency, and plug type vary widely, but large regions may use common standards.

Physical compatibility of receptacles may not ensure compatibility of voltage, frequency, or connection to earth ground.

The ampere (SI unit symbol: A, dimension symbol: I), often shortened to "amp", is a unit of electric current.

In the International System of Units (SI) the ampere is one of the seven SI base units.

It is named after André-Marie Ampère (1775–1836), French mathematician and physicist, considered the father of electrodynamics.