What Is The Difference between Copper Core And Aluminum Core of Cable Wire? Which Is Better?

Think of wire and cable, we have to mention that its conductors are the main material used is copper and aluminum, then the question arises, that wire in the end copper core and aluminum core wire and cable kind of good, what is the difference between the two? Which is better? We'll tell you about it!

Distinguish wire core is a copper core or aluminum core there are several ways

The first is to look at the model number of the wire, the meaning of the letters in the model number are as follows:

B - fixed laying.

X - rubber insulation;

L-aluminum core (copper core without letters);

W - neoprene sheathing;

Y - polyethylene sheath.

Such as:

BXW - copper-core rubber-insulated chlorine-protected wire;

BLXW-aluminum-core rubber-insulated chlorine-protected wire.

The next is intuitive from the wire core material to distinguish the copper core wire core is made of copper; because copper is golden, while aluminum is white. You can use a knife to directly peel off a little wire skin, watch the core to see the color to distinguish between copper-core or aluminum-core.

PS: Now many aluminum-core wire will be coated with a layer of yellow material on the surface of the core, commonly known as copper-coated aluminum wire, which also looks yellow. Distinguish method: one is to scrape the surface layer, copper core wire showing yellow, aluminum core wire is now white; second is to burn with a lighter, copper core wire flame is blue, aluminum core wire flame is white. So we must polish their shiny eyes, do not be unscrupulous businessmen are deceived, yo!

The difference between the aluminum and copper cores of wire and cable

1. The cross-sectional flow of copper and aluminum wire is different;

2. Aluminum wire is relatively cheap;

3. Aluminum wire is lighter in quality;

4. The mechanical strength of aluminum wire is poorer

5. Aluminum wire is very easy to oxidize at the end of the splice line, and the temperature of the splice line will easily rise after oxidation

6. Copper wire internal resistance is small. Aluminum wire than copper wire resistance, but it is aluminum wire than copper wire heat dissipation faster; mainly different electrical carrying capacity and mechanical strength. Copper core resistivity 0.017, aluminum core 0.029. So the current-carrying capacity of aluminum is about 80% of copper. Physical strength of copper is also much better.

The advantages and disadvantages of copper-core wire and cable and aluminum-core wire and cable comparison

Copper core resistivity is low: the resistivity of the aluminum core than the copper core is about 1.68 times higher.

Copper core ductility is good;

Copper core high temperature resistance: the allowable stress at room temperature, copper can reach 20, aluminum is 15.6kgt/mm2.

Copper core fatigue resistance: aluminum-core wire bending repeatedly prone to fracture, copper is not easy;

Copper-core cable wire stability is stronger, corrosion resistance; copper core can be anti-oxidation, corrosion resistance, while the aluminum core is susceptible to oxidation and corrosion, often quickly break down.

Although the aluminum core is cheaper, but in addition to cheap, in many cases, the rest is a chicken feather, especially for some products, should be more cautious.

Well, the above is about "cable copper core and aluminum core what is the difference? Which is better? "The introduction, I hope it can help you! Suggest to continue to pay attention to XSD Cable, to learn more information.