Cable Voltage Drop Calculator

Calculate cable voltage drop VD = 2·I·R·L (single phase DC), 1.732·I·R·L (3-phase). Maximum 3% branch circuit, 5% total (NEC recommendation). Wire resistance from gauge tables. Power factor correction for AC.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)
σy — Normal Stress Y (MPa)
τxy — Shear Stress (MPa)
⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.
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How It Works

Calculate cable voltage drop VD = 2·I·R·L (single phase DC), 1.732·I·R·L (3-phase). Maximum 3% branch circuit, 5% total (NEC recommendation). Wire resistance from gauge tables. Power factor correction for AC

Each component has a specific meaning:

  • Gauge tables — The gauge tables recorded for the patient or scenario being assessed.

Note: Interpret the cable voltage drop result against the clinical thresholds and context described above.

How to Use

Enter the gauge tables for the patient or scenario you are assessing. Calculate cable voltage drop VD = 2·I·R·L (single phase DC), 1.732·I·R·L (3-phase). Maximum 3% branch circuit, 5% total (NEC recommendation). Wire resistance from gauge tables. Power factor correction for AC. Use the cable voltage drop result to inform your clinical assessment.

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Frequently Asked Questions