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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.