22.2 Internal wiring and electrical connections between different parts of the tool shall be adequately
protected or enclosed.
Compliance is checked by inspection.
22.3 Internal wiring shall be either so rigid and so fixed or insulated that, in normal use, creepage
distances and clearances cannot be reduced below the values specified in 28.1. The insulation, if any
shall be such that it cannot be damaged in normal use.
Compliance is checked by inspection, by measurement, and by manual test.
For insulated internal wiring, it is checked that either their insulation is electrically equivalent to the
insulation of the cords complying with IEC 60227 or IEC 60245, or it complies with the following electric
strength test.
A voltage of 2 000 V is applied for 15 min between the conductor and metal foil wrapped around the
insulation. There shall be no breakdown.
When sleeving is used as supplementary insulation on internal wiring, it shall be retained in position by
positive means. A sleeve is considered to be fixed by positive means if it can only be removed by breaking
or cutting, or if it is clamped at both ends.
Compliance is checked by inspection and by manual test.
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