Second, the cost difference The price ratio of copper and aluminum is about 3.5 or so. Therefore, the cost of the copper conductor is 7 times that of the aluminum conductor.
Third, the difference in conductivity Because the cable product is a product with a standard conductor size limit, it is impossible to buy an aluminum core cable whose conductivity is exactly equal to the copper core cable. Therefore, if you use aluminum conductors to make cables, you must use larger aluminum conductors. Experience has shown that in the case of equal current carrying capacity, the conductor cross-section of the aluminum core cable should be twice as large as that of the conductor of the copper core cable. This means that the price advantage of aluminum and copper is not significant, because the conductor is only a small part of the cost of the entire cable.
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