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Copper Clad Aluminum Wire Is A Double edged Sword

Update:19-10-2020
Summary:

The emergence of CCA wire is a collection of the advant […]

The emergence of CCA wire is a collection of the advantages of copper and aluminum. But the emergence of this new product, must he be completely advantageous? Let's take a look at the advantages and disadvantages of copper clad aluminum wire.
advantage:
1. Copper-clad aluminum technology is relatively low in price because its material is not pure copper, and in terms of weight, the unit of measurement is often required by meters instead of weight, so it saves transportation costs.
2. Due to the "skin effect" of high-frequency signals, copper-clad aluminum wires and copper-clad steel wires have the same conductivity as pure copper wires when transmitting high-frequency signals (greater than 5MHz).
Disadvantages:
1. In terms of electrical performance, because the conductivity of aluminum is worse than that of copper, the DC resistance of copper-clad aluminum conductors is larger than that of pure copper conductors. Whether this affects mainly depends on whether the cable will be used for power supply, such as providing power to the amplifier If used for power supply, copper-clad aluminum conductors will cause additional power consumption and voltage drop.
2. Because aluminum is easy to oxidize, it is not recommended to use copper-clad aluminum wire in places where wires are prone to heat. Copper core cables must be used in places where high temperature resistance and strict requirements are required by civil building design codes. Therefore, copper clad aluminum is often used instead of aluminum wire in shopping malls, and copper clad aluminum is rarely used instead of copper wire.

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