IEC 60364-5-52
Low-voltage installations selection and erection of wiring systems. Source of the mm² current-carrying-capacity tables and common voltage-drop design limits.
Cable Cross-Section Selector
Pick the right copper, tin-plated copper or aluminium cable for a single- or three-phase motor load. AWG (NEC 310.16) and mm² (IEC 60364) reference values, derated for ambient temperature, conductor material and insulation type — for teams in Worldwide.
For Worldwide: KKE Circuit is available across Global in English. Region: Global (INT).
Standards & references
What this calculator is based on
Ampacity values and derating factors come from the published international and North-American standards below. The tool is a quick-pick aid — final cable selection should always be verified against the applicable code edition and the manufacturer datasheet.
IEC 60228
Conductors of insulated cables. Defines the standard nominal cross-sectional areas used in the mm² sizing list.
IEC 60502 / 60227
Construction and rating of PVC-insulated and XLPE/EPR-insulated power cables, used here for simplified temperature and material assumptions.
NFPA 70 NEC Article 310
National Electrical Code conductor ampacity tables. The AWG side follows the usual 75 C copper reference approach for a quick pick.
NEC Article 430.22
Motor branch-circuit conductor sizing requires conductors rated for at least 125 percent of the motor full-load current.
Voltage-drop design check
This tool adds a simplified AC impedance-based voltage-drop screen so long cable runs can upsize beyond the minimum ampacity requirement.
Standards listed for reference only. KKE Circuit is not affiliated with IEC, ISO, NFPA, NEMA, UL or ICEA. Always consult the current published edition of the applicable standard and any local amendments before finalising a cable selection.
Inside KKE Circuit
Automatic wire and cable sizing — while you draw
This calculator picks one cable. KKE Circuit picks every cable in your drawing — automatically, the moment you wire a load.
Automatic wire & cable sizing
Every wire on the schematic is sized live against load, voltage, ambient and your chosen standard. Change a motor and the cable updates.
Voltage-drop check
Length-aware voltage-drop calculation flags any run that would exceed the % limit you set per circuit type.
Cable schedule export
A complete cable schedule (tag, from/to, cores × mm² / AWG, length, gland) is generated from the drawing — nothing typed twice.
Wire list & terminal list
Auto-numbered wire list and terminal-block strip drawings derive from your schematic and stay in sync with every revision.
Bill of Materials (cable totals)
Cable lengths roll up into the BOM by part number and colour, ready for procurement and panel-build kitting.
IEC, ANSI/NEC & JIC symbols
One drawing, multiple standards. Switch the symbol set without redrawing — great for OEMs shipping the same machine to NA and EU.
PLC I/O & tag references
Cross-reference PLC tags between schematic and panel layout, with cable cores carrying signal labels into the wire list.
Real-time collaboration
Multiple engineers on the same drawing, with revision history and locked sheet ownership.