why do we use copper for electrical wires
Copper is a well-known chemical element with atomic symbol Cu and atomic number 29. It has a beautiful red-orange metallic luster. In the modern days, this reddish metal is used in various areas like in the construction line as a building material, in roofing and plumbing, in industries as a raw material, as a constituent of various metal alloys, and most importantly in the electrical industry for making electrical copper wires that run through your New Haven home. Copper is used for making electrical wires that are used by yourP Pdue to its properties that make it an ideal metal for this purpose. It has emerged as the most used metal for making electrical wires due to the following attributes that it possesses:
Excellent Conductor of Electricity: PCopper is an excellent conductor of electricity; no other metal can compete with it in terms of electrical conductivity.
The wires made of this reddish metal are capable of carrying comparatively more electric current per diameter of wire. In other words, these wires deplete less electrical charge in comparison to other wires when electric current passes through them. Very Ductile Metal: PCopper is a very ductile metal, which means that it could be stretched to a good length without breaking or weakening it. This property is crucial from the point of view of drawing wires out of any metal. The reddish metal stands well on this parameter. Favorable Chemical Properties: PThe chemical properties of this metal go a great deal in making it an ideal element for making electrical wires.
Coppers favorable chemical properties make it resistant to abrasion and other bad effects that shorten the life of a wire. These wires can safely withstand adverse climatic conditions and thus last longer. High Temperature Tolerance: PAs we know that electrical wires take current from one place to another. In such a situation, when high voltage current passes through a wire its surface temperature becomes high. There is constant rise and fall in the temperature of high-tension electric lines. Not every wire could sustain such fluctuation in temperature, but copper wire can. This special property makes these wires long-lasting. Global Standard: PCopper wires enjoy a universal or global standard as they are preferred for electrical use worldwide.
These wires are compatible with the majority of modern building designs. Selecting these wires for your home or office, therefore, is not only convenient, but facilitates rewiring in the future. Abundant Quantity: PAccording to several geological surveys, copper is present in abundant quantities under the earths crust. It was found in this survey that the total amount of this reddish metal only in the top 1km layer of the earths crust is 1014 tons approx. This amount is estimated to be enough for the next 5 million years at the present extraction rate. If you are looking for a Connecticut Electrician then please call 888. 892. 3335 or complete our. The current rating of a cable is the current it can carry safely without overheating.
The main issue is that the temperature of the conductor should not rise above 90 C because this will cause the insulation to degrade and eventually break down. A cable should always be protected by a protective device a fuse or circuit breaker that corresponds to its current rating. The in picture 1. 3 will be in series with a 500 A protective device which will break the circuit before the current is high enough to cause the cables to overheat. The operating current of a cable is determined by how hot the cable gets. This is affected by a number of variables: the environment of the cable - if it is in a duct (especially with no airflow) it will tend to get hotter. Copper plays a part in improving the current rating of cables because it is such a good conductor.
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