NEN 1010 §523

Cable derating factor

Correctiefactor kabelbelasting

Also known as: correctiefactor, reductiefactor, derating, belastbaarheid, stroombelastbaarheid, motor, temperature-correction, temperature-correction-factor, thermal-derating, ambient-temperature, temperatuurcorrectie, omgevingstemperatuur, kt-factor

Correction factor for cable loading: multiplier for Iz table value to account for ambient temperature (k1), bundling of multiple circuits in one duct (k2), and soil parameters (Rth). Bundling of 6 circuits typically yields k2 ≈ 0.57.

See also