TruePhase - Circuit Colors
Enter a circuit number to view its common US phase color, voltage system, panel position, neutral, ground, and field-convention note for 120/240V single phase. TruePhase Pro unlocks 120/240V high-leg delta, 120/208V, and 277/480V three-phase lookup, plus features like saved panels, project presets, etc. It's local-first, no account needed. It's a field-convention reference, not for code compliance or engineering design. Verify conditions before use.