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The normal current carrying capacity is 6 amps per square millimeter without any cooling with forced cooling the number can be as high as 30 amps per square millimeter and for a motor application this means 5 times the energy density so a typical 1 or 2 KW/Kg energy density is now 5 to 10 KW/Kg in a continuous operation and peak values can be 10 times for a min or 20 times for a few seconds. The limiting factor is the thermal effects and how you deal with them the more efficient the heat removal the higher the allowed level of current.

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What is Current Carrying capacity of 50 mm X 6 MM copper flat busbar?

300ams


What is the resistance of a 6 000 foot piece of 1 0 copper wire?

The answer depends on the cross sectional area of the wire. This is not given.


What wire has the greatest cross-sectional area?

The wire with the greatest cross-sectional area is typically a thick copper wire, such as that used in electrical applications, measured in American Wire Gauge (AWG). For example, a 0000 AWG (4/0) wire has a cross-sectional area of approximately 53.5 mm². In general, as the AWG number decreases, the wire diameter and cross-sectional area increase. Thus, the thickest wire in standard gauge systems will have the greatest cross-sectional area.


is it construct two wires of the same length one of copper and one of iron that would have the same resistance at the same temperature?

Yes, it is possible to construct two wires of the same length, one of copper and one of iron, that have the same resistance at the same temperature. The resistance of a wire is determined by its resistivity, length, and cross-sectional area, as given by the formula ( R = \frac{\rho L}{A} ). Since copper has a lower resistivity than iron, the copper wire would need a larger cross-sectional area than the iron wire to achieve the same resistance.


What is 'quarter of'?

Current US quarters are made of a "sandwich" consisting of a pure copper core clad on both sides with a layer of cupronickel alloy (25% nickel and 75% copper). Overall, copper makes up about 92% of the coin by weight. Current Canadian quarters are made of an alloy of 94% steel and 3% copper, plated with nickel.