Cable Sizing — IEC 60364-5-52
Copper / aluminium · PVC / XLPE · methods A1, B1, C, D1, E
Design current I
b
(A)
Run length (m)
optional
Phases
Single phase (230 V)
Three phase (400 V)
Conductor
Copper
Aluminium
Insulation
PVC (70 °C)
XLPE / EPR (90 °C)
Installation method
A1 — conduit in insulated wall
B1 — conduit on wooden wall
C — clipped direct on wall
D1 — buried in ground
E — free air, single layer on tray
Ambient (°C)
25
30
35
40
45
50
55
Grouping (circuits)
1
2
3
4
5–6
7–9
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Per IEC 60364-5-52 Table B.52.4 · for guidance only — verify with licensed engineer
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