Download - bendingradii_1227548493
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General Information
Minimum Internal Radii of bends for cables subject to flexing and of bends in cables for fixed wiring - low voltage
MINIMUM INTERNALRADIUS OF BEND(TIME OVERALL
DIAMETER OF CABLE)
OVERALL DIAMETERFINISHINSULATION
Minimum internal radii ofbends for flexible cablesand flexible cords in a fixedsituation.
Minimum internal radii ofbends for flexible cablesand flexible cords and subject of flexing.
Minimum internal radii ofbends in cables for fixed wiring
Not exceeding 10mm
Exceeding 10mm but notexceeding 25mm
Exceeding 25mm
Not exceeding 25mm
Exceeding 25mm
Not exceeding 25mm
Exceeding 25mm
Not exceeding 10mm
Exceeding 10mm but notexceeding 25mm
Exceeding 25mm
Any
Not exceeding 12.5mm
Exceeding 12.5mm but notexceeding 20mm
Exceeding 20mm but notexceeding 30mm
Exceeding 30mm but notexceeding 50mm
Exceeding 50mm
Any
Not exceeding 30mm
Exceeding 30mm but not exceeding 50mm
Exceeding 50mm
Any
2
3
4
6
8
8
10
3
4*
6*
6*
8†
10†
12†
15†
18†
12
12†
15†
18†
6
Non-metallic sheath and / ortextile braid
Non-metallic sheath and / ortextile braid
Non-metallic sheath withtextile reinforcement screenor flexible armour ‡
Non-armoured(excluding smooth aluminiumsheath)
Armoured (excluding smooth aluminium sheath)
Smooth aluminium sheathwith or without armour
Lead or corrugatedaluminium sheath with orwithout armour
Smooth aluminium sheathwith or without armour
Copper sheath with orwithout PVC covering
Rubber, PVC or XLPE
Rubber, PVC or XLPE
Rubber , PVC or XLPE
Impregnated paper
Mineral
At temperatures approaching 0°C, standard grade PVC becomes rigid and brittle, therefore, care should be taken when bending cables at low temperature.
* For circular conductors only. For shaped conductors, the minimum bending radius factor is 8. Otherwise this table applies to bothcircular and shaped conductors.
†The factors applied are applied to the diameter over the aluminium sheath.‡Armoured flexible cables are suitable for use over reels or pulleys only when the movements are slow and intermittent.
