
Electrical Installations Of Buildings - Part 5: Selection And Erection Of Electrical Equipment - Section 523: Current-carrying Capacities In Wiring Systems
出版:Nederlands Normalisatie Instituut

專家解讀視頻
Provides for a satisfactory life of conductors and insulation subjected to the thermal effects of carrying current for prolonged periods of time in normal service.
HD 384.5.523:2001 - Identical