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Aluminium and Copper are
the two most used metals for electrical conductors. The table below
compares their characteristics.
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ELECTRICAL
EQUIVALENT AL AND Cu CONDUCTORS |
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1
Kg. of aluminium is worth 2 Kg. of copper. |
This comparision points
out that:
- Although the
specific electrical resistance of aluminium (2,8
µOh/cm) is 1,6 times higher than that of copper, an aluminium
conductor requires a diameter only 1.3 times bigger for an equal
linear resistance.
- The specific mass of
copper (8,9 Kg/cm3) is 3,3 times higher than that of
aluminium (2,7 Kg/cm3). So, for identical linear
resistance, an aluminium conductor will be twice as light as a
copper conductor.
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