Al is lighter than Cu.
In the electrical trade aluminum wire is equivalent to copper wire as it is also used to carry current. To carry the same current as copper wire aluminum wire is up sized to meet the same ampacity.
aluminum
Copper is used the majority of the time. Gold is sometimes because it does not corrode. Tungsten is used in light bulbs because it is a good resistor and resists the flow of electrons. Aluminum and silver are also sometimes used. There is also some recent research in safely using sodium and lithium.
2/0 in Copper and 4/0 in Aluminum. This is referred to as two ought and 4 ought. <<>> A #2/0 copper conductor with an insulation factor of 90 degrees C is rated at 185 amps. In Canada, a # 2/0 wire is allowed to be used for residential 200 amp services only instead of using #3/0. This rule helps the home owner to keep building costs lower. A #3/0 copper conductor with an insulation factor of 90 degrees is rated at 210 amps
Because those metals have a high meling point, so it's easier and safer to use fuse wire which melts at a lower teamp.
Actually, aluminum mylar tape shielded cables are better than copper braid shielded cables for instrumentation cables.
Aluminum
They conduct electric signals. Copper is a fairly good conductor, that's why it is often used instead of other metals.
Copper and aluminum (or copper clad with aluminum) are often used in wiring. New aluminum connection is now limited to use service-connections by some electrical codes and can no longer be installed for branch circuit wiring.
Because they have low electrical resistance, good enough mechanical properties and aren't too expensive.
Copper and aluminum are the most common metals used for electric cables due to their high conductivity and affordability. Copper is preferred for higher conductivity, while aluminum is more cost-effective for longer-distance transmission lines.
A lot of the time Chevy used aluminum battery cables in their cars,(in particular my 1980) I was continually having starting and battery problems until I replaced the cables with copper.
copper
The reaction between aluminum and copper chloride is often used to demonstrate displacement reactions in chemistry. When aluminum is added to copper chloride, the aluminum will displace the copper in the compound, resulting in the formation of aluminum chloride and copper metal. This reaction is commonly used in educational settings to illustrate the reactivity of metals and the concept of displacement reactions.
Copper (electrical wiring and hot water pipes) and aluminum (high voltage cables and soda drink cans).
If a copper spoon is used to stir a solution of aluminum nitrate, a redox reaction may occur between the copper and the aluminum ions in solution. This could lead to the displacement of copper by aluminum, forming aluminum metal on the surface of the copper spoon and changing the composition of the solution.
Aluminum and copper