宁波水电安装在安装电线穿管敷设时，管内不得有接头、扭结。 固定电线套管用线卡或者内打木楔用铁丝固定。 吊顶内的电源线头用软管保护。电线双色线分色走。面对电源插座，左孔接零线，右孔接相线;有接地孔的插座，地线孔应接在正上方。

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