同样采用ISO 9247:1990，该标准规定了用于连接土方机械电路中部件的电线和电缆的识别码系统和标记的基本项目。它不包括位于电气部件内的电线和电缆，例如交流发电机（交流发电机）、继电器和仪表。

Identically adopts ISO 9247:1990, which specifies the fundamental items of an identification code system and marking for electrical wires and cables used to connect components in the electrical circuits of earth-moving machines. lt does not cover the wires and cables located within electrical components, e.g. alternator (a.c. generator), relay instrument.