Answer / joshykollam

Method 1 . By Color red, yellow , blue
Method 2 . By a Fluke phase sequence meter
Method 3 . By winding lead notation- u1,v1,w1 and u2,v2,w2-
curresponds to R,Y,B in the case of a transformer or motor
The easy way to use Phase sequence meter

Answer / md ibrahim

phase sequense meter

Answer / b shelar

u can be find out easy to use dark-bright lamp method.

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