这事就邪门了按理说过了家里的总闸，就是RCCB，所有的线都在RCCB的控制范围。
这条线竟然不在范围，那是从哪里来的，又是谁拉的。
这是原文：
An RCCB was installed when the flat underwent an upgrading programme in the early 2000s, but it only protected circuitry at the utility room and would not have interrupted electricity supply to the water heater, Mr Goh said.
说明当初安装的时候是有问题的。
说明当初安装的时候是有问题的。
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