4.4.4.3.3 Touch current in case of failure of PE conductorThe requirements of this subclause shall be satisfied to prevent accessible conductive parts to become dangerous in case of damage to or disconnection of the PE conductor.For pluggable type A equipment, the touch current shall not exceed the limits specified in 4.4.3.4.For all other PECS, one or more of the following measures shall be applied, unless the touch current can be shown to be less than the limits specified in 4.4.3.4:a) Use of a fixed connection anda cross-section of the PE conductor of at least 10 mm2 Cu or 16 mm2 Al; orautomatic disconnection of the supply in case of discontinuity of the PE conductor; orprovision of an additional terminal for a second PE conductor of the same cross-sectional area as the original PE conductor;orb) Use of a pluggable type B connection with a minimum PE conductor cross-section of 2,5 mm2 as part of a multi-conductor power cable. Adequate strain relief shall be provided.For marking requirements, see 6.3.7.4.Compliance is checked by inspection and by test of 5.2.3.7.For equipment which may be energized from multiple sources of supply, the touch current limits above apply in all possible intended installation configurations and combinations of sources that may be energized at the same time, unless one of the measures in a) or b) above is used.When it is intended and allowed to interconnect two or more PECS using one common PE conductor, the above touch current requirements apply to the maximum number of PECS to be interconnected, unless one of the measures in a) or b) above is used. The maximum number of interconnected PECS is used in the testing and has to be stated in the installation manual.