额定输入功率或额定电流的上限值和下限值应标在器具上，以使得输入功率与电压之间的关系是明确的。

The upper and lower limits of the rated power input or rated current shall be marked on the appliance so that the relation between input and voltage is clear.

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LED灯具须在稳定的、精心调控的电流强度下运行，不应在超过其额定电压或额定电流的情况下超负荷运行。

The LED fixture shall be operated at constant and carefully regulated current levels. LEDS shall not be overdriven beyond their specified nominal voltage and current.

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熔断器选择必须依据其使用条件来进行，主要有系统电压、额定电流、短路容量、保护配合等。

Selection of fuses must be carried out according to their use conditions, mainly they are system voltage, rated current, short circuit capacity, protection suitability etc.

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