In my case,transformer is 50 meter away from my house,a four core line (by wapda)is coming from transformer and houses are connected to it,its silver,then 10 meter 4 silver service lines connected to my meter,from meter 4 copper wires of 7/44 gauge is going to main board.
Use pakistan cable in 7/44 gauge it can bear 40 amp load easly.
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