Radial Network · Multi-Bus Fault Level Schedule
Build a simple radial distribution network — utility source, transformers, cables and buses — and calculate three-phase prospective fault current at each bus in the network. Add elements in sequence from source to load; each bus element captures the fault level at that point, producing a fault-level schedule useful for switchgear rating verification and protection coordination.
Results for guidance only. Verify against current standards and manufacturer data.
Not a substitute for engineering judgement or a licensed professional.
Elements are added in series from utility source to load, matching the physical network topology. Each transformer and cable contributes its impedance (converted to per-unit on the common MVA base) to a running cumulative total. Each Bus element captures the fault level at that specific point by calculating fault current from the cumulative impedance up to that point — producing a full schedule showing how fault level reduces moving from source to load.