Here you have the possibility to calculate the required cross-section of copper connecting cables in
the single-phase AC network. Normal AC loads such as single-phase AC motors are connected here.
Attention:
Our cable calculator only generates a rough estimate for the cross-section!
For Example:
A 230 volt AC standard motor has a rated current of 25.18 amps, one
cos φ of 0.86, a cable length of 72 m, and the voltage drop of the cable is 2%.
Which cable cross-section results from these specifications?
A = (2 x I x L x cosφ) / (K x Δv x V)
A = (2 x 25.18 A x 72 m x 0.86) / (56 x 2% x 230 V)
A = (3118.29) / (257.60)
A = 12.105 mm²
The next larger suitable cross-section is 16 mm²!
Measuring Units:
Cross section A = mm²
Voltage V = Volt [V]
Current I = Ampere [A]
Kappa copper K = 56 [m / Ω x mm²]
Delta U Δv = %
cos φ = no measuring unit
