Voltage drop of a copper or aluminium conductor, single or three phase, by mm2 o...

{ "method": "GET", "queryParams": { "currentA": 20, "lengthM": 50, "material": "copper", "phase": "single", "sizeMm2": 10, "supplyVoltageV": 230 }, "type": "http" }

{ "example": { "areaMm2": 10, "asOf": "2026-10-21T06:22:29.492Z", "awgDiameterMm": null, "conductor": "10 mm2", "conductorLossW": 68.96, "currentA": 20, "degraded": false, "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.", "lengthOneWayM": 50, "limitPct": 3, "material": "copper", "maxLengthForLimitM": 100.058, "notChecked": [ "conductor ampacity or insulation rating (no NEC or IEC ampacity tables are included: consult the electrical code)", "skin effect, conduit and bunching, harmonics", "…1 more" ], "phase": "single", "powerFactor": 1, "reactanceOhmPerKm": 0, "reasons": [ "Resistance 1.724 ohm/km: rho(20 C) = 1.724e-8 x (1 + 0.00393 x (T - 20)) = 1.724e-8 ohm m over 10 mm2.", "Single phase counts the there-and-back path: drop = 2 I L (R cos phi + X sin phi).", "…2 more" ], "resistanceOhmPerKm": 1.724, "resistiveDropV": 3.448, "resistivityOhmM": 1.724e-8, "source": "computed locally (V = k I L R', k = 2 single phase or sqrt(3) three phase; R' = rho(T)/A)", "summary": "10 mm2 copper, 20 A over 50 m (single phase) at 20 C drops 3.448 V (1.499% of 230 V).", "supplyVoltageV": 230, "temperatureC": 20, "verdict": "WITHIN_LIMIT", "voltageDropPct": 1.49913, "voltageDropV": 3.448 }, "type": "json" }