Top.Mail.Ru

Cable cross-sections and ampacity

Copper and aluminium cable ampacity table (IEC 60364): continuous current and power for single-phase and three-phase circuits.

Cable cross-sections and ampacityCircuit breaker ratingsElectrical schematic symbols (GOST/IEC)IP protection ratingsRCD types and selectionEarthing systems TN-C, TN-S, TN-C-S, TT, ITWire colour codeBreaker selectivityGenerator selection: petrol or dieselATS and backup powerUPS: types and selectionSolar power plants: types and calculation🌍 World rules

Continuous current rating (copper, IEC 60364)

For residential wiring, copper cable (VVG, NYM) is standard. Values below are for three-core cable in open installation (in air). In conduit or wall chase, reduce current by 20–30%.

Cross-section, mm²Current, APower 220 V, kWPower 380 V, kW
1.5194.212.5
2.5275.917.8
4388.425.0
64610.130.3
107015.446.1
169019.859.2
2511525.375.7

Aluminium cable

Cross-section, mm²Current, APower 220 V, kWPower 380 V, kW
2.5214.613.8
4296.419.1
6388.425.0
105512.136.2
167015.446.1
259019.859.2
Note: in wall chase or conduit, reduce current by 20–30%. Lighting usually 1.5 mm², sockets 2.5 mm², hob and oven 4–6 mm².

Design with GorkyCAD Pro

Automatic single-line diagrams, IEC calculations, specification and PDF — from one model.

Start free

Data is for reference. Final design decisions must follow current regulations and a qualified engineer.