Connection to the LV utility distribution network
The most-common LV supplies are within the range 120 V single phase to 240/415 V 3-phase 4-wires.
Loads up to 250 kVA can be supplied at LV, but power-supply organizations generally propose a MV service at load levels for which their LV networks are marginally adequate.
An international voltage standard for 3-phase 4-wire LV systems is recommended by the IEC 60038 to be 230/400 V
EIG-C-connection-LV-architecture-guide.pdf
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2008 Edition
