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  2. Underground power line - Wikipedia

    en.wikipedia.org/wiki/Underground_power_line

    Above-ground lines cost around $10 per 1-foot (0.30 m) and underground lines cost in the range of $20 to $40 per 1-foot (0.30 m). [9] In highly urbanized areas, the cost of underground transmission can be 10–14 times as expensive as overhead. [10] However, these calculations may neglect the cost of power interruptions.

  3. BGM-71 TOW - Wikipedia

    en.wikipedia.org/wiki/BGM-71_TOW

    The BGM-71 TOW ("Tube-launched, Optically tracked, Wire-guided", pronounced / ˈ t oʊ /) [8] is an American anti-tank missile.TOW replaced much smaller missiles like the SS.10 and ENTAC, offering roughly twice the effective range, a more powerful warhead, and a greatly improved semi-automatic command to line of sight (SACLOS) that could also be equipped with infrared cameras for night time use.

  4. Detonating cord - Wikipedia

    en.wikipedia.org/wiki/Detonating_cord

    Detonating cord. Detonating cord (also called detonation cord, detacord, detcord, or primer cord) is a thin, flexible plastic tube usually filled with pentaerythritol tetranitrate (PETN, pentrite). With the PETN exploding at a rate of approximately 6,400 m/s (21,000 ft/s), any common length of detonation cord appears to explode instantaneously.

  5. 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.

  6. Aluminium-conductor steel-reinforced cable - Wikipedia

    en.wikipedia.org/wiki/Aluminium-conductor_steel...

    Aluminium-conductor steel-reinforced cable. Sample cross-section of high tension power (pylon) line, showing 1 strand (7 wires) of steel surrounded by 4 concentric layers of aluminium. Aluminium conductor steel-reinforced cable (ACSR) is a type of high-capacity, high-strength stranded conductor typically used in overhead power lines.

  7. American wire gauge - Wikipedia

    en.wikipedia.org/wiki/American_wire_gauge

    American wire gauge. American Wire Gauge (AWG) is a logarithmic stepped standardized wire gauge system used since 1857, predominantly in North America, for the diameters of round, solid, nonferrous, electrically conducting wire. Dimensions of the wires are given in ASTM standard B 258. [1] The cross-sectional area of each gauge is an important ...

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