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Wednesday, September 5, 2018

Why Copper Is So Commonly Used In Making Electrical Wires


Copper is metal with high ductility and also exhibits one of the best heat and electrical conductivity properties among metals. It is used in a number of applications but one of the key uses of copper is in the electrical industry for manufacturing electrical wires. That’s because copper offers a number of features that are needed to make good quality electrical wires.

Copper is an excellent conductor of electricity and is also one of the strongest metals available today. It sets the benchmark for conductivity with its exceptional capacity to carry and transmit electric current. The conductivity capacity of annealed copper is the international standard to which all other electrical conductors are compared.



Copper wires need a lower level of insulation and smaller conduits when compared to aluminum as the latter is manufactured in a larger diameter size and hence needs a larger conduit to be suitably accommodated. Another major advantage of using copper in electrical wires is that copper oxide also conducts electricity thus preventing the connections and terminations from any overheat situations. Other metals may need oxide inhibition through additives. As copper provides better thermal connectivity, it works better than aluminum, especially where connections and terminations are involved.

Copper Resists Stress

Copper is capable of resisting stress which can cause gradual deformation of metal over time. Stress is a problem that occurs frequently with aluminum, especially at points where there is a pressure on the wiring system. This can result in a loose connection and oxidation. Copper is strong enough to deal with stress and related adversities. That’s why engineers insist on copper wires as it comes with the assurance of durability and performance.

Copper Is Ductile

Copper is regarded as ideal for wiring systems as it offers high ductility. Copper does not conform to the general logic that a stronger metal is usually less pliable. Copper is durable and ductile which provide engineers a couple of more reasons for using this metal in electrical wires. Copper wires do not pose any problem at junction boxes and terminations as it can be bent, twisted and pulled hard without the risk of damage or breaking.

Copper Is Easy To Handle and Install

The inherent properties of copper - strength, durability, ductility, and hardness, make it very easy to work with. When you pull it through a conduit without any stretching and can also be twisted or bent as needed at various points in its installation. Copper wire does not suffer nicks as easily as aluminum. In copper wires, you get a product that delivers high reliability and ease of handling and installation.

Copper Has Immense Strength

The exceptional strength of copper helps the metal resist stretching, breaks and nicks which lesser metals and alloys such as aluminum suffer when pulled through cable trays and conduits. Such damages can affect the current carrying capacity of the wire resulting in wastage of energy and enhanced risk of overheating. The superior tensile strength of copper wires helps avoid such undesirable situations.

Copper Does Not Corrode

Copper is a noble metal that can ensure high reliability and longevity for your electrical wiring system. Copper, in its purest form, does not suffer any galvanic corrosion when connected to other metals and alloys. Copper wiring is also known for its ability to resist corrosion caused by moisture, humidity, industrial pollution, and other atmospheric influences. It can offer a truly trouble-free performance for the life of your system.

Copper Is a Cost-Effective Option

When you buy something that guarantees good performance and can last long, your investment can be termed a something of real value. Aluminum might be cheaper than copper when it comes to electrical wire manufacturing but if you look at other vital factors such as installation and operational convenience along with long term performance, then copper is the clear and indisputable winner. Consider these features of copper:

  •        Has better current carrying capacity through narrow conduits
  •        It is easy to install as no special connectors or tools are needed
  •        Offers high resistance to stretching, nicks, breaks, and corrosion
  •        Relatively maintenance free


Copper Complies With All Codes

Copper has been the mainstay of the electrical industry for many years now and that’s why copper wiring is accepted as the industry’s standard wiring material. Another reason for universal acceptance of copper as the best electrical wiring material is that it complies with all the codes, regulations and ordinances for electrical conductors in the US and most countries of the world. The superior and consistent performance that copper wires deliver in various types of diverse installations has made copper the most favored metal for use in electrical wiring.  
Copper wires can be used for light domestic and residential wiring as well as for heavy duty commercial and industrial wiring. It is easily available which makes copper a great choice as you won’t face any issues during future rewiring.

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