Industrial Cables  
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Industrial Cables Multi-Core Flexible Cables

318B to BS 6500

Application and Description
318B to BS 6500 cables may be used as an indoor general wiring cable primarily for installations in public areas.
Examples include use on pendant lighting drops or as a general supply lead within hospital or airport
projects. They are suitable for installations where fire, smoke emission and toxic fumes create a
potential threat to life and equipment. 318B is equivalent to harmonized code H05Z1Z1-F.

Cable Construction

Fine bare copper strands
Stranding to BS 6360 Class 5 or IEC 60228 Class 5
Halogen-fee thermoplastic TI6 core insulation
Green/Yellow grounding (3 conductors and above)
Halogen-fee thermoplastic TM7 outer jacket

318B to BS 6500

Core Identification

2 Cores: Brown, Blue
3 Cores: Brown, Blue and Green/Yellow
4 Cores: Brown, Grey, Black and Green/Yellow
5 Cores: Brown, Blue, Grey, Black and Green/Yellow

Technical Characteristics

Working voltage: 300/500 volts
Test voltage: 2500 volts
Flexing bending radius: 6xOverall diameter
Fixed bending radius: 4xOverall diameter
Operating temperature: -30º C to +90º C
Short circuit temperature: +160º C
Insulation resistance: 20 MΩxkm
Halogen free acc. to EN 50267-2-1 / IEC 60754-1
Smoke density acc. to EN 50268-2 / IEC 61034-2
Corrosivity of gases acc. to EN 50267-2-2, IEC 60754-2
Flame retardancy acc. to EN 50265-2-1, IEC 60332-1

Cable Parameter

AWG
(No of Strands/
Strand
Diameter)
No. of Cores  x Nominal Cross Sectional Area
#xmm²
Nominal
Thickness
of Insulation
mm
Nominal Thickness of Sheath
mm
Nominal Overall Diameter
mm
Nominal Copper Weight kg/km Nominal Weight kg/km
3182B
18(24/32) 2x0.75 0.6 0.8 6.2 14.4 58
17(32/32) 2x1 0.6 0.8 6.6 19 67
16(30/30) 2x1.5 0.7 0.8 7.4 29 87
14(50/30) 2x2.5 0.8 1.0 9.3 48 138
12(56/28) 2x4 0.8 1.1 10.6 76.8 190
3183B
18(24/32) 3x0.75 0.6 0.8 6.6 21.6 68
17(32/32) 3x1 0.6 0.8 6.9 29 81
16(30/30) 3x1.5 0.7 0.9 8.1 43 109
14(50/30) 3x2.5 0.8 1.1 10.1 72 172
12(56/28) 3x4 0.8 1.2 11.5 115.2 242
3184B
18(24/32) 4x0.75 0.6 0.8 7.1 29 81
17(32/32) 4x1 0.6 0.9 7.7 38 101
16(30/30) 4x1.5 0.7 1.0 9 58 117
14(50/30) 4x2.5 0.8 1.1 11 96 210
12(56/28) 4x4 0.8 1.4 12.5 153.6 298
3185B
18(24/32) 5x0.75 0.6 0.9 8 36 102
17(32/32) 5x1 0.6 0.9 8.4 48 107
16(30/30) 5x1.5 0.7 1.1 10 72 169
14(50/30) 5x2.5 0.8 1.2 12.3 120 260
12(56/28) 5x4 0.8 1.4 14.1 192 371