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The inner and outer conductors of a cable form the plates of a capacitor, and if the cable is long (on the order of tens of kilometres), this will result in a noticeable phase shift between voltage and current, thus significantly decreasing the efficiency of the transmitted power, which is a vector product of current and voltage. [4]
In especially deep water, the cable may not be strong enough to lift as a single unit, so a special grapple that cuts the cable soon after it has been hooked is used and only one length of cable is brought to the surface at a time, whereupon a new section is spliced in. [108] The repaired cable is longer than the original, so the excess is ...
It is close to the notion of transnational organised crimes at sea. The only aim of blue crime is monetary profit. One form of criminal activity against submarine cables is cable theft. An example is the cable between Singapore and Indonesia, which was partly robbed in 2013: 31,7 km and 418 tons of cables were removed. [33]
Route of the cable, Red is Submarine, Dark blue is terrestrial. LEV is a submarine telecommunications cable system in the Mediterranean Sea linking Italy, Cyprus and Israel. It has landing points in: Mazara del Vallo, Province of Trapani, Sicily, Italy; Yeroskipou near Paphos, Cyprus; Tel Aviv, Israel; Terrestrial section (Shown in blue) to: 4.
A wire or cable has a voltage (to neutral) rating and a maximum conductor surface temperature rating. The amount of current a cable or wire can safely carry depends on the installation conditions. The international standard wire sizes are given in the IEC 60228 standard of the International Electrotechnical Commission.
comparison wire gauge sizes: Image title: Comparison of SWG (red), AWG (blue) and IEC 60228 (black) wire gauge sizes from 0.03 to 200 mm² to scale on a 1 mm grid, by CMG Lee. In the SVG file, hover over an item to highlight it. Width: 100%: Height: 100%
Wire sized 1 AWG is referred to as "one gauge" or "No. 1" wire; similarly, thinner sizes are pronounced "x gauge" or "No. x" wire, where x is the positive-integer AWG number. Consecutive AWG wire sizes thicker than No. 1 wire are designated by the number of zeros: No. 0, often written 1/0 and referred to as "one-aught" or "single-aught" wire
In commerce, the sizes of wire are estimated by devices, also called gauges, which consist of plates of circular or oblong form having notches of different widths around their edges to receive wire and sheet metals of different thicknesses. Each notch is stamped with a number, and the wire or sheet, which just fits a given notch, is stated to ...