Copper is a better conductor by weight, but aluminum is better by weight, so the copper will be thinner but heavier.
You will see that a 250 kcmil aluminium wire will get you 170 amps at 60 degC while a 000 (or 3/0) copper wire will get you 165 amps at 60 degC.
I think you mean circular mils, not square millimeters.
Copper is a better conductor by weight, but aluminum is better by weight, so the copper will be thinner but heavier. You will see that a 250 kcmil aluminium wire will get you 170 amps at 60 degC while a 000 (or 3/0) copper wire will get you 165 amps at 60 degC. I think you mean circular mils, not square millimeters.
The rule of thumb is 1mm square=6Amp so 10mm square will,for safety reasons and for a copper conductor, carry 50Amps.
copper cost more to mine then aluminum so aluminum will cost less then copper cable.
A copper cable transports electrical signals. An optical cable transports light signals.
It depends on the length of th cable and the diameter of the copper cable used.
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I know two kind of machines for copper recycling. One is cable granulator which is used for making copper core into small granules by grinding cable and separating PVC. This is a ideal machine for miscellaneous cable. The other is copper wire stripper which is to strip the PVC cover and you get the entire copper core. This is widely used in various copper wire various diameters.
Fiber optic cable is constructed out of glass or plastic, and uses light pulses to transmit data. Copper cable is made out of copper material (not glass or plastic) and uses electrical voltages to transmit signals.
Copper xlpe armoured cable
Coaxial cable, STP cable, UTP cable
according to CompTIA A+ guide to hardware Lab Manual: "Any visible copper is an indication you need a new cable." -jazzmarazz13