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Aluminium is a) strong b) light c) fairly cheap d) not a terrible conductor of electricity. It's much stronger, lighter, and cheaper than any material that conducts electricity significantly better than aluminium does.
Why is that important?
Well, if you're making wires for long-distance power transmission, having the wires be strong and light means you can put the towers further apart, which is a significant savings. In fact, aluminium is SO light that you can make the wire thicker (which makes it even stronger), and since power-carrying-capacity increases with increased cross-sectional area, the fact that it doesn't conduct as well as, say, copper becomes less important. And aluminium is so much cheaper than copper that even the thicker aluminium wire is cheaper than a copper wire of the same carrying capacity.
Wiki User
∙ 9y ago
Wiki User
∙ 10y agoAluminium is used in the central core of power cables because it is a better conductor of electricity than iron and aluminium does not rust
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How is the low tensile strength of aluminium compensated for in the construction of overhead lines?
by using a steel core wire in between the aluminium wires
Why aluminium armour is required for single core cable?
To prevent for circulating the magentising current.
How many core electrons are in AL?
Aluminium has 13 electrons; valence electrons are 3.
What does the core of an atom contain?
In the center of the core of the atom is the nucleus. nice helping you!
Why is electrical cable made of copper?
Electrical cables are made from copper because it is a better conductor than aluminium, it is also cheaper. If you did use aluminium then;it may set fire.may oxidize after a while and over heat.I hope this helped! :D
Single core cables benefits?
One of the single core cables benefits is high current rating. The other benefit is that the operating temperatures of single core cables are least affected by the other cables.
Why do metal alloys used in electrical wires?
Most electrical wires use unalloyed copper. The exception is high-power overhead lines that use aluminium for its low density, which means there is a lot less mass for the towers to support, so they are lighter and less expensive. Aluminium overhead cables are either ACSR - aluminium core, steel reinforced, which uses multi-strand cables with steel strands in the centre; or AAAC which is all-aluminimum alloy conductor. AAAC cables use an aluminium-magnesium-silicon alloy with silicon 0.5-0.9%, magnesium 0.6-0.9%, iron 0.5% max, copper 0.1%, manganese 0.03%, chromium 0.03%, zinc 0.1%, boron 0.06%. The purpose of adding other elements is to increase the tensile strength of the conductors so they can be tensioned up without too much dangling.
What lines send the electricity over nationwide network?
If you mean conductors instead of lines the wire is ACSR. Aluminium Conductors Steel Reinforced.ACSR is a concentric-lay-stranded conductor consisting of a single core wire or a stranded steel central core with one or more layers of stranded aluminium wires.
Is a wire a solid?
This just means a wire with a solid central core, ie made from one solid length of copper or aluminium, as opposed to a wire made from many thin strands
What is a solid wire?
This just means a wire with a solid central core, ie made from one solid length of copper or aluminium, as opposed to a wire made from many thin strands
How do you replace heater matrix on peugeot 307?
The heater matrix can be replaced by removing the heater core and temperature control cables. Replace the heater core and the control cables.
How is the low tensile strength of aluminium compensated for in the construction of overhead lines?
by using a steel core wire in between the aluminium wires
Why do the cables have a steel core?
Because the steel strengthens the cable
What types of wire are used in transmission lines?
Stranded aluminium, with a steel core.
What is the central core?
The central core has 5 regions which helps to regulate the basic life processes.
What is the central core of the earth called?
The inner core.
What are the different minerals found in the crust mantle and the core?
minerals present in crust ,mantel and core are silica aluminium oxygen magnesium
