Much of the newer overhead cables is made of aluminum with steel reinforcing it for strenght purposes. Aluminimum is much cheap, and much lighter, thus it is cheaper to use vs. copper for high voltage transmission, and copper has a lower resistance which means more electricity can get through the wire/ cable, which means more electricity can get around the world quicker. most people should use copper becasue it has a lower resistance where aluminuim has a bit of a high resistance not to much but a bit so that is why you use copper not alominuim.
Al is lighter than Cu.
It depends on the power rating of the circuit but a common size would be 95 sq. mm up to about twice that. 11 kV systems are usually 3-phase 3-wire. Underground cables use copper while overhead ones tend to use uninsulated aluminium or aluminium conductor steel reinforced (ACSR) cables.
For that distance I would run AWG # 3 copper and install a sub-panel.
how much copper is in copper wire
For 3-core twin and earth cables up to 4 sq mm with reasonable air circulation, allow 8 amps per sq mm for copper and 5 amps per sq mm for aluminium. For permanent installations with high usage per day, use 4 amps per sq mm.
It conducts heat and electricity very well. It is good in pipes for keeping the heat in the water.
Steel-reinforced aluminium cables are used for overhead lines because aluminium is much lighter than a copper conductor, despite not being quite as good a conductor as copper. The function of the steel reinforcement is to improve the tensile strength of the conductor.
Actually, aluminum mylar tape shielded cables are better than copper braid shielded cables for instrumentation cables.
Mainly metals. Silver is the best but copper is nearly as good and a lot cheaper. Aluminium is about 40% worse but is popular for overhead cables because they are lighter.
copper
Computer cables are often made of copper.
It depends on some factors which are not mentioned in the question. The main difference between 100% copper wire and copper clad aluminum is that IF they are the same diameter, then the copper will carry and stand up to more electrical current than the aluminum. If the diameter of the aluminum cables have been upgraded in size, to match the current carrying capacity of the normal copper cables, then the only remaining difference is that copper withstands much more bending and coiling beforethe metal begins to "work harden," and some of the individual wire strands begin to break. In other words, the copper stands up to use better than aluminum. When buying booster cables, read the lables, and make sure that the maximum number of Amps, for which the aluminum cables are capable of carrying, is equal to or greater than the highest rated copper cables. Therefore, IF the copper clad aluminum cables are rated for the same current carrying capacity as copper cables, then there is NO difference in use between the two types.
Cables Unlimited offers a wide range of cables for fiber optic installations and copper installations. Some of their products include power cables, coax cables, wireless tower cables, and patch cables.
yfy means
Usually copper with plastic insulation.
The power cables are mostly built with aluminum and not with sodium because sodium is highly reactive. Aluminium on the other hand is reactive as well but it only reacts one and them becomes aluminum oxide. Sodium keeps on reacting therefore is too dangerous.
Many early telegraph cables were made of iron wire, but all modern ones are copper.