This clause of Part 1 is applicable, except as follows: Replacement of the third paragraph: The rated voltage is not more than 250 V for single-phase a.c. or d.c. tools, and 480 V for three-phase a.c. tools. NOTE 101 The rated input limit of 3 700 W in Part 1 is not appropriate for wall saws. The rated input for wall saws will be effectively limited by the maximum peripheral speed of the diamond wheel. Addition: This standard applies to transportable wall saws guided by a track guiding system intended for dry cutting or to be connected to a liquid system for cutting concrete, stone or similar material by means of a diamond wheel. The rated speed of the diamond wheel does not exceed a peripheral speed of 100 m/s at rated capacity. This standard does not apply to transportable wall saws that can be left unattended while performing an operation. This standard does not apply to transportable wall saws that employ hydraulic systems. This standard does not apply to hand-held cut-off machines. NOTE 102 Hand-held cut-off machines will be covered by a future part of IEC 62841-2.