Aluminium XLPE Cable – Size, Current Rating and Load Capacity Chart Understanding cable selection is essential for safe, reliable, and efficient electrical power distribution.
This reference chart covers 3-Core + Neutral Aluminium XLPE cables and provides useful information on:
• Cable sizes from 25 mm² to 630 mm²
• Aluminium conductor resistance
• Reactance and capacitance
• Approximate overall cable diameter
• Current-carrying capacity for direct burial, duct, and air installation
• Approximate 3-phase load capacity at 415 V and 440 V
• Short-circuit current rating for 1 second
For example, a 3 × 120 + 70 mm² Aluminium XLPE cable has approximately:
• 31 A – Direct buried
• 42 A – In duct
• 166 A – In air
• 170.73 kVA at 415 V, PF 0.9
Actual cable ampacity and load capacity depend on several factors, including installation method, ambient or soil temperature, grouping, cable length, voltage drop, thermal conditions, and manufacturer specifications.