SUPPLY VOLTAGE OPTIONS
Supplies to domestic premises are given at single phase 2-wire or three phase 4-wire. However, the actual supply voltage provided depends on the magnitude of your load requirements.
Medium voltage & high voltage
Single-phase, two-wire, 230V, up to 12kVA maximum demand
Three-phase, four-wire, 400V, up to 72kVA (100A) maximum demand
Three-phase, four-wire, C.T. metered, 400/230V, up to 1000kVA maximum demand
Three-phase, three-wire, C.T. metered
Three-phase, three-wire, 11kV for load of maximum demand 1,000 kVA to 5,000kVA
Three-phase, three-wire, 22kV for load of maximum demand 1,000kVA to 10,000kVA
Three-phase, three-wire, 33kV for load of maximum demand 5,000kVA to 25,000kVA
Three-phase, three-wire, 132kV and 275kV for exceptional high load maximum demand above 25,000kVA
Voltages other than the above classifications cannot be provided by TNB. However, you may opt to make your own transformation arrangements where necessary.
