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Electrical Calculators – Voltage Drop
x402
Electrical Calculators – Voltage Drop is a paid API for AI agents from electrical-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-11-02).
Calculates voltage drop across a copper or aluminium conductor for single or three-phase systems, given conductor size (mm² or AWG), length, current, and temperature.
Price / call$0.02
Success—
StatusUnknown
How this service works
Voltage drop of a copper or aluminium conductor, single or three phase, by mm2 or AWG, length, current and temperature.
Output
Returns a structured object including the calculated voltage drop in volts and as a percentage of supply voltage, the maximum allowable cable length for the configured drop limit, a pass/fail verdict, summary text, the effective conductor area, phase type, current, and any advisory reasons or degraded-mode flags.
Example use cases
Residential wiring compliance check
“I'm running a 30-metre copper 2.5 mm² cable from my consumer unit to a 16A socket on a single-phase 230V circuit at 20°C — what's the voltage drop in volts and percent, and does it pass the 3% limit?”
Industrial three-phase cable run sizing
“For a balanced three-phase 400V motor drawing 60 amps, with a 120-metre aluminium cable at 4/0 AWG and a power factor of 0.9 at 75°C conductor temperature, what's the voltage drop and is it within 3%?”
Solar PV DC cable loss estimate
“What voltage drop will I get on a 25-metre copper 10 mm² cable carrying 40 amps on a single-phase system at 35°C conductor temperature, and what's the maximum length I can use before exceeding a 2% drop?”
Technical details
Endpoint
GEThttps://electrical-calc.x402tookit.com/voltage-drop?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, on-demand voltage drop calculation for copper or aluminium conductors in single or three-phase AC circuits, especially when conductor size is specified in either mm² or AWG and the result must include a pass/fail verdict against a configurable percentage limit. It is well-suited for automated cable compliance checks, electrical design assistants, and field estimation tools. Prefer it over general physics calculators when you need electrical-specific defaults (20°C reference, 3% guideline) and structured verdict output.
Side effects
- Missing required parameters (material, currentA, lengthM) returns a validation error
- Supplying neither awg nor sizeMm2 causes an error since one conductor size parameter is required
- Invalid material value (not 'copper' or 'aluminium') returns a rejection
- Negative or zero current or length values produce an error
- Out-of-range AWG strings that are not recognised return a parse error
- Omitting supplyVoltageV means percentage drop cannot be computed and may be null
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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