IEC 62841-1:2014, Clause 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. machines, and 480 V for three-phase a.c. machines. Addition: This document specifies safety requirements and their verification for the design and construction of hand fed, shredders/chippers with an integral electric motor, with or without vacuum assisted collection, which are designed to reduce organic material to smaller pieces and are used in a stationary position by an operator standing on the ground. This document applies to shredders/chippers with feed intake openings or feed safety openings that in total will fit into a square of 250 mm x 250 mm. NOTE 101 The requirements for the measurement of the square of 250 mm x 250 mm are specified in 19.101.1. In this document, shredders/chippers are referred to collectively as machine(s). This document does not cover requirements for machines powered by combustion engines; or machines driven by an external power source; or machines with powered discharge intended to broadcast material or load vehicles; or machines with mechanically powered feed intake or attachments; or wood chippers for agricultural, lawn and park and forestry use.