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carshateme

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Posts posted by carshateme

  1. Aluminum and copper are both very good electrical conductors. Aluminum is less expensive and lighter in weight, But copper is a better conductor (Talking about wiring)

    The reason for this has to do with two metallurgical properties of aluminum. First, aluminum corrodes, and the corroded aluminum is an insulator. Unfortunately, aluminum corrodes very quickly, and the corrosion is not visibly obvious. As a result. corrosion can be present in a connection involving aluminum conductors, and this corrosion can lead to localized heating in the connection.

    The other problem is 'cold flow' - specifically, that when aluminum is placed under pressure, it will gradually conform to whatever physical constraint caused that pressure in a way that leads to a reduction in pressure. When connections are made to aluminum conductors, this characteristic causes those connections to gradually loosen over time as the aluminum 'flows' out of the joint.

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