This part of IEC 60947 specifies requirements for protective conductor terminal blocks with PE function up to 120 mm 2 (250 kcmil) and for protective conductor terminal blocks with PEN function equal to and above 10 mm 2 (AWG 8) with screw-type or screwless-type clamping units, primarily intended for industrial applications.
NOTE: AWG is the abbreviation of “American Wire Gage” [Gage (US) = Gauge (UK)]
