Ground Loop / Common-Impedance Voltage Estimator implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-clean

Evidence ID

t5-071

Effect

Computation or source lookup only

Input and validation requirements

The extreme-magnitude vector produces 1e616 V mathematically, which overflows standard JavaScript Number arithmetic to Infinity. The instrument should reject or explicitly flag overflow rather than return Infinity without warning.

Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "return_current_A_rms": 4,
    "ground_resistance_ohm": 0.25,
    "ground_inductance_H": 0.002387324,
    "frequency_Hz": 50
  },
  "expected_outputs": {
    "noise_voltage_magnitude_V_rms": 3.1623
  },
  "working": "ω=2πf=2×3.14159265×50=314.159265 rad/s. X_L=ωL=314.159265×0.002387324≈0.750000 Ω. |Z|=sqrt(R²+X_L²)=sqrt(0.25²+0.75²)=sqrt(0.0625+0.5625)=sqrt(0.625)=0.790569 Ω. Vnoise=I|Z|=4×0.790569=3.162277 V≈3.1623 V RMS."
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche5/tranche5-results.json