This part of IEC 60092 specifies requirements for the design, construction and installation of electrical systems in pleasure craft. It applies to pleasure craft for inland waters and to seagoing pleasure craft. The standard applies to the following types of electrical system in pleasure craft which have a length of 24 m to 50 m, or which have a gross registered tonnage not exceeding 500 grt: single-phase alternating current systems which operate at a nominal voltage not exceeding 250 V; three-phase alternating current systems which operate at a nominal voltage not exceeding 500 V; direct current systems which operate at a nominal voltage not exceeding 50 V. The standard also applies to three-phase alternating current systems which operate at a nominal voltage not exceeding 500 V, in pleasure craft which have a length of less than 24 m. NOTE 1 For alternating current systems having voltages exceeding 250 V single-phase or 500 V three-phase, and for direct current systems exceeding 50 V, and for craft larger than 500 grt or with a length greater than 50 m, other standards within the IEC 60092 series apply. NOTE 2 Attention is drawn to the Recreational Craft Directive 94/25/EC of the European Parliament and of the Council, dated 16 June 1994. NOTE 3 For pleasure craft less than 24 m in length, the following standards apply: for direct current installations which operate at a nominal voltage not exceeding 50 V: ISO 10133; for alternating current installations which operate at a nominal voltage not exceeding 250 V single-phase: ISO 13297.