Aluminum wire is a commonly used conductive material in the field of electrical engineering, especially in residential construction, where it is widely used due to its relative cheapness and lightness. However, aluminum wire also has some significant disadvantages compared to copper wire, which require careful consideration when selecting materials. This article will look at some of the disadvantages you may face when using aluminum wire.

1. Oxidation and corrosion
Aluminum wire is more susceptible to oxidation and corrosion than copper wire. Especially in environments with high humidity or high humidity changes, aluminum wires can easily form an oxide layer and reduce their conductive performance. This can lead to increased resistance, ultimately affecting current transfer efficiency.

2. Connection issues
Aluminum wires need to be connected more carefully because they are easily deformed compared to copper wires. When tightening nuts or bolts, you need to make sure you apply the appropriate amount of force to avoid damaging the wire. In addition, special aluminum wire connectors must be used when connecting to ensure the stability of the connection.

3. Thermal expansion
Aluminum wire expands more than copper wire when heated. This means that when the current changes significantly, the aluminum wire may expand and cause loosening or breakage.

4. Capacity limit
Compared with aluminum wires of the same diameter, aluminum wires have slightly lower electrical conductivity. Therefore, if you are using aluminum wire instead of copper wire, you may need to use thicker aluminum wire to maintain the same current carrying capacity.

5. Compatibility issues
Some older outlet and switch designs may not fit well with aluminum wire, which may require additional adjustments or replacement equipment to ensure safety.

6. Difficulty in repair
Once there is a problem with the aluminum wire, it can be difficult to repair. Since the connection of aluminum wires is relatively complex, once a fault occurs, it may require professionals to repair it.

In conclusion
Although aluminum wire has obvious cost and weight advantages in some specific situations, in practical applications, we also need to be aware of some disadvantages relative to copper wire. When selecting wire materials, various factors need to be carefully weighed, taking into account the specific use environment and needs, to ensure the stability and safety of the electrical system. If you choose to use aluminum wire, you should also take appropriate measures to reduce the risks that may be caused by its shortcomings. At the same time, during the installation and maintenance of aluminum wires, it is recommended to ask a professional electrician to perform the operation to ensure that everything is safe and reliable.