Solvers/electrical/voltage-drop
AC / DC Voltage Drop & Cable Sizing Calculator
Size electrical conductors accurately by calculating line impedance, resistance, percentage voltage drop across long runs, and compliance with the 3% branch circuit standard.
Circuit Parameters
Voltage Drop (% ΔV)
2.82%
End Voltage
388.7 V
Calculation Steps
1. Conductor Line Resistance (R)
Based on copper resistivity at operating temperature (0.0214 \(\Omega\cdot\text{mm}^2/\text{m}\)).
2. Total Voltage Drop (\Delta V)
Calculated with power factor \(\cos\phi = 0.88\).
3. Terminal Voltage & Cable Heating Power Loss
Joule $I^2 R$ heat dissipated into the raceway/tray.
Official Review
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Recommended Reference Handbooks & Standards
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