main fuse

基本解释

If there is no hot water after a reasonable period of time, check the main fuse box.
如果经过合理的时间，仍然没有产生热水，请检查保险丝是否烧断。
If you see sparks or broken or frayed wires, or if you smell hot insulation, turn off the electricity at the main fuse box or circuit breaker.
如果你看到冒火花的、断裂的或者磨损的电线，或者闻到绝缘体烧焦的味道，在保险丝盒或者断路器断关闭电路。
If you see sparks or broken or frayed wires, or if you smell burning insulation, turn off the electricity at the main fuse box or circuit breaker.
如果你看到电火花或破损的电线，或嗅到了绝缘体烧焦的味道，断开主开关柜里活断路器的电源。