In my country Ghana, most houses have a 3 phase 4 wire system at 220-240 volts. Some if not most electricians use 16mm2 THHN wire to connect from the service point, through the watt hour meter and to the load center. This is for 200 amp service. I thought a 200 amp service would require 2/0 cable for such service. In reference, 16mm2 is equivalent to #6. Is this type of cable efficient for such service?
17 years ago