Abstract :
The short-term difficulty for manufacturers and users of cables and equipment where there may be a choice of either aluminium or copper is not so much any constant price differential as the wild fluctuations of copper-price level, which make the calculation of the economy of designs of aluminium alternatives fluctuate. In the long term, however, it seems clear that we may expect the cost of conductivity when using copper to be at least three times the cost of conductivity when using aluminium.
