Juhtmed ja kaablid. Tugevvoolujuhtmed ja -kaablid nimipingega kuni 450/750 V (U0/U). Osa 1: Üldnõuded = Electric cables. Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U). Part 1: General requirements2012 https://www.ester.ee/record=b2889227*est