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Why selected cable colour red yellow and blue in 3 phase
Electrical system?
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Answer Posted / pawan singh chauhan
AC three phase system colors {red,yellow,blue + green for earth} based on IEC(International Electrotechnical Commission)and NEC(The National Electricity Code)
because these colors are universal in india & easily detected if cables are heated
For DC system wire colors { Brown,White,Grey,orange} also based on IEC(International Electrotechnical Commission)and NEC(The National Electricity Code)
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