Will I face voltage drop issues using 70mm² cable over 650m at 150A?
Using a copper cable with a diameter of 70 mm² with a load of 150 amperes on a three-phase system that operates at 400 volts will result in a voltage drop of approximately 11.4%, which is more than the recommended limit of 5%. It is possible for this to result in undervoltage, malfunctioning equipment, and energy loss.
If you want to lessen the voltage drop, the solution is to choose a larger cable size (for example, 120 mm or 150 mm) or to run parallel cables.
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