描述了一种计算所有电压电缆的连续额定电流系数的方法，其中涉及外部热源的交叉。该方法适用于任何类型的电缆。 该方法假设电缆周围的整个区域具有均匀的热特性，且叠加原理适用。叠加原理并不严格适用于接触电缆，因此本标准中规定的计算方法如果适用于接触电缆，将产生乐观的结果

Describes a method for calculating the continuous current rating factor for cables of all voltages where crossings of external heat sources are involved. The method is applicable to any type of cable. The method assumes that the entire region surrounding a cable, or cables, has uniform thermal characteristics and that the principle of superposition applies. The principle of superposition does not strictly apply to touching cables and hence the calculation method set out in this standard will produce an optimistic result if applied to touching cables