Core identification: identified by insulating color difference, master core red, light blue, and white; ground wire black, and the control wire should be printed with no.
线芯识别：采用绝缘分色识别，主线芯红、浅蓝、白。地线黑色，控制线打号码。
Core identification: identified by insulating color difference, master core red, light blue, and white; ground wire black, and the control wire should be printed with no.
线芯识别：采用绝缘分色识别，主线芯红、浅蓝、白。地线黑色，控制线打号码。
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