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Hi, I am upgrading power transformer from 220 KVA to 400 KVA due to increase in load. I have 185mm running from Power transformer to 400 V, 3 Phase distribution system.
Distance between transformer to distribution panel is 76 meters. Since my load would increase to 400 Amperes therefore I would need to upgrade 3 core cable as well. I was thinking to add another 95mm 3 Core cable and a 48mm cable for neutral which would run PARALLEL to 185mm cable.
Is it ok to do that?
I am in Pakistan and system is similar to UK electrical system with 400 KVA Transformer, 3 Phase system with 400 Volts and single phase with 220 Volts.
I am not concerned much about neutral cable because most of the heavy appliances are of 3 phase.
Would appreciate your comments.
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