A cable rating 8A voltage drop 15mv max vd of 4% is allowed what is the longest length cable can be used 240v?

Question

A cable rating 8A voltage drop 15mv max vd of 4% is allowed what is the longest length cable can be used 240v?

Answer 1

There seems to be something missing the voltage drop is 15mV per what? Foot? Meter? Mile?

4% of 240 is 9.6 volts or 9600mV right? So 9600/15 = 640.

So 640 X where X is the length unit (feet, for example).

Note you normally see wire in resistance per unit length which would be .015/8 in this case (Ohm's law).

Answer 2

just google it there are calculators for this.