What are the differences between copper and aluminum cores for PV cables?

I. What are the differences between copper core and aluminum core of photovoltaic cable?1, the color of the core is different.2, the quality of aluminum wire is lighter, but the mechanical strength of the aluminum wire is poorer.3, in the power of the same load, because the aluminum current-carrying capacity is much smaller than copper, so the diameter of the aluminum wire is larger than the copper wire, for example, 6KW electric water heater, the copper core wire of 6 square will be enough, the aluminum wire may have to be 10 square.4, the price of aluminum is much lower than copper, so the same distance to meet the power supply requirements in the case of aluminum cable costs less than copper cable, aluminum wire can also reduce the risk of theft (because of the low recycling price).5, aluminum alloy can be done overhead bare wire, generally steel-core aluminum stranded wire, copper cables are mostly used for buried lines, and is generally not too much used for bare wires without insulation.6, aluminum wire in the splicing line end is extremely easy to oxidize, the splicing line end oxidization will occur after the temperature rises, poor contact is Causes failure (power outage or wire breakage) of the most frequent points. 7, copper wire internal resistance is small. Aluminum wire than the internal resistance of copper wire, but faster than copper wire heat dissipation.

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