Copper is used for electrical wiring due to its high electrical conductivity, malleability and strength. Copper is also resistant to corrosion and oxidation, making it reliable and cost-effective.
Copper and aluminum are two common commercial metals used for electrical wiring, and each has its advantages and disadvantages. Copper, which is used more commonly, conducts electricity better, making it possible to conduct a larger current than an aluminum wire with the same diameter. Copper does not experience creep, which is the contraction and expansion of materials due to temperature change, making it a safer material to use by eliminating loose wiring. The advantages of aluminum wiring include higher affordability and its lightweight nature.