Električne instalacije u zgradama - Deo 4-44: Zaštita radi ostvarivanja bezbednosti - Zaštita od naponskih smetnji i elektromagnetskih smetnji - Tačka 443: Zaštita od prenapona atmosferskog porekla ili usled rasklapanja
Electrical installations of buildings - Part 4-44: Protection for safety - Protection against voltage disturbances and electromagnetic disturbances - Clause 443: Protection against overvoltages of atmospheric origin or due to switching