Cable Size Chart Mm2 2021 «INSTANT · 2025»
This paper provides a detailed overview of electrical cable sizing cross-sectional areas (measured in mm²). It outlines the relationship between conductor size, current carrying capacity (ampacity), and voltage drop. The document serves as a reference guide for electrical engineers and technicians, presenting standard metric sizes, typical applications, and the theoretical basis for cable selection in accordance with international standards such as IEC 60228.
Comprehensive Guide to Electrical Conductor Sizing: Standards, Current Ratings, and Selection Criteria (mm²) cable size chart mm2
$$Voltage Drop = \frac2 \times L \times I \times mV/A/m1000$$ This paper provides a detailed overview of electrical
| Conductor Size (mm²) | Max Current (A) – PVC | Max Current (A) – XLPE | Typical Applications | |----------------------|------------------------|------------------------|-----------------------| | 0.5 mm² | 3 – 5 A | – | Very low-power electronics, signal wires | | 0.75 mm² | 6 – 8 A | – | Small appliances, lamps, control circuits | | 1.0 mm² | 10 – 12 A | – | Lighting circuits, small loads | | 1.5 mm² | 14 – 16 A | 18 – 20 A | Lighting, sockets (light duty) | | 2.5 mm² | 18 – 21 A | 24 – 27 A | Power sockets (general purpose) | | 4.0 mm² | 25 – 30 A | 32 – 38 A | Water heaters, ovens, air conditioners | | 6.0 mm² | 35 – 40 A | 42 – 50 A | Cooktops, small submains | | 10 mm² | 50 – 60 A | 65 – 75 A | Submains, large appliances | | 16 mm² | 70 – 80 A | 90 – 100 A | Main feeders, small distribution boards | | 25 mm² | 90 – 105 A | 115 – 125 A | Heavy submains, main supply cables | | 35 mm² | 115 – 130 A | 145 – 160 A | Large industrial feeders | | 50 mm² | 145 – 165 A | 175 – 200 A | Main switchboard supply | | 70 mm² | 180 – 205 A | 220 – 250 A | High-power industrial | | 95 mm² | 220 – 250 A | 265 – 305 A | Large buildings, factories | | 120 mm² | 255 – 290 A | 310 – 355 A | Major feeders | | 150 mm² | 290 – 330 A | 350 – 405 A | Heavy industrial | | 185 mm² | 330 – 380 A | 400 – 460 A | Substation outputs | | 240 mm² | 390 – 450 A | 475 – 545 A | Very high current | | 300 mm² | 445 – 520 A | 545 – 625 A | Power distribution mains | current carrying capacity (ampacity)
