HOUSE ELECTRICAL WIRING DIAGRAM SYMBOLS UK

Three Phase Electrical Wiring Installation in Home - NEC & IEC
In the UK and EU, 11kV from the step-down transformer wired in Delta connection via (3 Phase, 3-Wires System) enters the 400V/230V distribution transformer wired in Star “Y” Connection (Three Phase, 4 Wires System). In the US, 4-7 from the step-down transformer wired in Delta connection via 3 Phase, 3-Wires System enters the 240V/120V distribution transformer
Automatic UPS / Inverter Wiring & Connection Diagram to the
Related Electrical Wiring Tutorial: UPS / Inverter Wiring Diagram With Auto & Manual Changeover Switch System. Now, according to the below UPS connection diagram, connect an extra wire (Phase) to those appliances where we have already connected Phase and Neutral wires from (Power house & DB) (i.e., two wire as phase (Live) as shown in the below