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家用电气的逐步普及,选用合适的电度表和保险丝显得很重要.电度表选得过大,会造成走字不准;电度表选购得过小,则会超负荷而烧坏.保险丝选小了容易烧断而造成断电;选大了可能造成电气设备的损坏,甚至酿成火灾.怎样正确选择电度表和保险丝呢?选择时可以按全部家用电器和照明设备额定电流的70%选用电表.保险丝的选择应该比同时使用的最大负荷电流稍大一些,即按大于最大负荷电流的30%左右选择为最佳.
The gradual popularization of household electrical appliances, the selection of suitable watt-hour meters and fuses is very important.Electricity meter is too large, will cause the word is not allowed to go; electricity meter is too small to buy, it will be overloaded and burned. Choose a small fuse easy to blow caused by the power failure; choose a big may result in damage to electrical equipment, and even lead to fire. How to choose the correct meter and fuse it? Choice can press all the household appliances and lighting equipment rated current 70% of the selection of the meter. Fuse selection should be slightly larger than the maximum load current used simultaneously, that is, by more than 30% of the maximum load current selection is the best.