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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

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Q: How do you calculate cable size for 50 hp?

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To answer this question the voltage of the motor must be given.

6mm cable

3 core 4 Sq.mm cable is sufficient for 7.5 HP motor. Eswaran

i have 200 hp motor what i need cable size in 100 feet distance

you need the current of motor or the KW/HP rating

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To answer this question the voltage of the motor must be given.

6mm cable

To answer this question the voltage or the amperage of the motor is needed.

3 core 4 Sq.mm cable is sufficient for 7.5 HP motor. Eswaran

i have 200 hp motor what i need cable size in 100 feet distance

I have a 12x22 on my 50 hp merc-2010 model , pushing a 20 ft. Toon. Does great.

you need the current of motor or the KW/HP rating

It ranges from $50 to $100 on ebay.

probably about 50 hp depending on how reliable the efficiency ratings of the various manufacturers are

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