Maximum Cable Length Calculator

Understanding Maximum Cable Length

The maximum cable length is a critical factor in ensuring that the electrical system operates efficiently, with acceptable voltage drop across the cable. This calculator helps you determine the maximum length of the cable based on the following factors:

  • Voltage (V)
  • Current (A)
  • Cable resistivity (Ω·m)
  • Acceptable voltage drop (%)

Formula for Maximum Cable Length

The maximum cable length can be calculated using the formula:

              Maximum Cable Length (L) = (Voltage * Voltage Drop) / (2 * Resistivity * Current)
            
The result will give you the maximum length of the cable in meters, ensuring that the voltage drop does not exceed the acceptable limit.