This document describes a method, based on measurements combined with calculations, to determine specific characteristics of the inrush current of single and/or multiple lighting products of the same type. Lighting products include the following: " Light sources with integrated controlgear, " Controlgear, " Luminaires. The inrush current characteristics that are determined are " the peak inrush current, " the inrush-current pulse duration. This Document applies to lighting products connected to low-voltage 230 V AC 50/60 Hz electrical supply networks. NOTE - In clause 6 it is stated that the methodology applies reference values for the reference (line) inductance and the reference (short circuit) peak current which reflect the typical situation in a 230 V AC installation.