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2. Overhead power line - Wikipedia

   en.wikipedia.org/wiki/Overhead_power_line

   Overhead lines or overhead wires are used to transmit electrical energy to trams, trolleybuses or trains. Overhead line is designed on the principle of one or more overhead wires situated over rail tracks. Feeder stations at regular intervals along the overhead line supply power from the high-voltage grid.

3. Power cable - Wikipedia

   en.wikipedia.org/wiki/Power_cable

   Very flexible power cables are used in automated machinery, robotics, and machine tools. See power cord and extension cable for further description of flexible power cables. Other types of flexible cable include twisted pair, extensible, coaxial, shielded, and communication cable. An X-ray cable is a special type of flexible high-voltage cable.

4. Low-voltage network - Wikipedia

   en.wikipedia.org/wiki/Low-voltage_network

   A low-voltage network or secondary network is a part of electric power distribution which carries electric energy from distribution transformers to electricity meters of end customers. Secondary networks are operated at a low voltage level, which is typically equal to the mains voltage of electric appliances. Most modern secondary networks are ...

5. Extra-low voltage - Wikipedia

   en.wikipedia.org/wiki/Extra-low_voltage

   The extra-low voltage. The low risk of accidental contact with a higher voltage. The lack of a return path through earth (ground) that electric current could take in case of contact with a human body. The design of a SELV circuit typically involves an isolating transformer, guaranteed minimum distances between conductors and electrical ...

6. Electric power distribution - Wikipedia

   en.wikipedia.org/wiki/Electric_power_distribution

   Electric power distribution is the final stage in the delivery of electricity. Electricity is carried 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 33 kV with the use of transformers. [ 1]

7. High-voltage cable - Wikipedia

   en.wikipedia.org/wiki/High-voltage_cable

   A high-voltage cable ( HV cable) is a cable used for electric power transmission at high voltage. A cable includes a conductor and insulation. Cables are considered to be fully insulated. This means that they have a fully rated insulation system that will consist of insulation, semi-con layers, and a metallic shield.