Stranded aluminium, with a steel core.
Alluminium wire
Five common types of wire include: Copper Wire: Known for its excellent conductivity and flexibility, often used in electrical applications. Aluminum Wire: Lighter and more cost-effective than copper, used in power distribution and overhead transmission lines. Steel Wire: Strong and durable, often used in construction, fencing, and industrial applications. Tinsel Wire: A fine, flexible wire used in electronics and for making certain types of jewelry. Magnet Wire: Insulated copper or aluminum wire used in the winding of transformers, motors, and inductors.
There are essentially 2 types of connections for a 3 phase AC transmission lines Star and Delta , Star is a 4 wire connection with each phase supplying potential with respect to a common ground wire , while delta is 3 wire connection with any single phase at one given time acting as a ground , for transmission reducing one wire makes a lot of cost difference hence it is favored
It requires a special tool that releases the wire clips.
piggyback entry
Multiple stranded cable is used in transmission lines because the high voltage potential of each line causes the electrons to tend to run only on the surface of the line due to repulsion. You want to maximize the surface area of the line, hence the multiple stranded lines, so that you maximize the efficiency of the line. In fact, some transmission lines have a non-conductive core, adding strength while maintaining low weight.
There is a special tool that releases the wire clips that hold them on.
Electric current is a transmission medium which can be used to transfer data across a wire for example ( copper wires). Radio waves is a transmission medium which can be used to carry data through the air. The above mention mediums are known as data transmission media.
Coaxial cable is a type of cable that has a single inner-core wire. This wire is surrounded by a layer of insulation, a woven metal shield, and an outer jacket. Coaxial cables are commonly used for television, internet, and other data transmission applications.
Aluminum transmission lines are often reinforced with steel strands or cables to increase their strength and ability to handle tension, especially for longer spans and higher loads. The steel reinforcement provides additional support and rigidity to the aluminum conductors, improving the overall performance and durability of the transmission lines.
2 types of copper wire which are surely not the only ones are coaxial, and cat 5,5 e, 6 etc. Now many people are bringing networking over power lines.
Color has nothing to do with it. Its' the wire type and application that determines the types of wire used.