For all tools that are likely to cut into concealed wiring or their own cord, handles and grasping surfaces, as specified in the instruction manual in accordance with 8.14.2 b) 6), shall be formed of insulating material or, when of metal, shall be either adequately covered by insulating material or their accessible parts shall be separated by insulating barrier(s) from accessible metal parts that may become live by the output shaft. These insulating barriers are not to be regarded as basic insulation, supplementary insulation or reinforced insulation.If a stick type auxiliary handle is provided with such tool, it shall be insulated and be provided with a flange having a height not less than 12 mm above the grasping surface between the grasping area and accessible parts that may become live by the output shaft.The relevant part of IEC 62841-2, IEC 62841-3 or IEC 62841-4 specifies if 21.30 does not apply.Compliance is checked by inspection and by the tests of 20.5.