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just apply the formula :-
p=v*i*cos(angle);
now you have the power rating,load so in turn power factor so you can easily calculate the value of current.
with the help of current you can chose the cable available in the market either the aluminum or copper wire
satendra.svnit@gmail.com
First you need to find out the maximum current, for which you need to know the voltage.
Once you know the maximum current, cable manufacturer provides a data sheet in which you can find out the current carrying capacity of different size of cables. You can then choose right size of cable for current equivalent to 50 HP. It also depends on the way you plan to lay the cable - underground or over head, single or multi layer, ambient temperature , also the permissible voltage drop at the end of the cable... etc
Size will differ depending on whether the cable is copper or aluminum. Copper cable can take more current, compared to aluminum for the same size, generally
To answer this question the voltage or the amperage of the motor is needed.
To answer this question a voltage value is needed to calculate a current value.
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