Generally speaking, the conductor of electrical wires among worldwide market is copper and aluminum.
But how to make a decision between them if we are inquiring electrical wires for household installation and appliances?
That is quite important.
So we must know what is the distinction between them:
1. Load Power Rating
With same cross section area, copper conductor electrical insulated wire gets a higher load power rating than aluminum type.
Let me make an example without actual calculation just for your reference:
If 2.5mm² aluminum electrical insulated wire can load 2500V,then copper can load 3000V.
2. Flexibility
Copper electrical insulated wire is with better flexibility. It can be bend easily.
Aluminum type is more possible to break off if we bend it.
3. Stability
Aluminum electrical insulated wire is prone to oxidation, thus changing into bigger resistivity and lowing its rating of power loading. It is big potential safety risk not only for property but for human life.
Copper conductor type is with excellent stability.
4. Resistivity
The electrical resistivity of aluminum conductor type is 1.68 times higher than copper conductor type, which is bad for utilization rate of electricity because of its higher power loss and heat emission.
5. Price
Aluminum wire is much cheaper and lighter than copper wire and
Advice:
For long-term finance and safety consideration,please be sure to choose copper conductor electrical insulated wire but not aluminum conductor type.
Please do not dig groove in the wall to bury the wire for installation. It is highly recommend to use a regular pre-buried sleeve installation to avoid electric leakage and fire risk.