IEC 61936-1:2021

Power installations exceeding 1 kV AC and 1,5 kV DC - Part 1: AC

IEC 60364-8-1:2019

Low-voltage electrical installations - Part 8-1: Functional aspects - Energy efficiency

IEC 60670-1:2015

Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 1: General requirements

IEC 60364-5-54:2011

Low-voltage electrical installations - Part 5-54: Selection and erection of electrical equipment - Earthing arrangements and protective conductors