Electrical / Electronics
Single-phase selection from user table
Selects the smallest entered section that meets the manual current conditions and voltage-drop limit.
Related calculators
Exact Iz lookup from user table
Looks up base ampacity Iz only for an exactly entered section in the user-supplied table.
Manual single-phase cable sizing check
Combines load current, manually corrected Iz, voltage drop and overload-condition checks.
Single-phase voltage drop
Helper calculation for simplified single-phase voltage drop from resistivity and area; it is not standards-based conductor sizing.
Voltage drop percent
Converts voltage drop to a percentage of nominal voltage.
Wire resistance
Calculates theoretical wire resistance from resistivity, length and cross-sectional area.
Historical minimum copper section
Historical data from a 1938 publication. Smallest-section selection without interpolation, for educational and comparative use only.