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Industrial Cables Single Core Fixed Wiring Cable
6491B to BS 7211
Application and Description
6491B to BS 7211 cables are designed for fixed wiring purposes in domestic and industrial power/lighting
applications.6491B to BS 7211 cables can be used in trunking or conduit, or may be surface mounted when used for
earthing. and they are generally in areas (such as public and government buildings) where smoke and
toxic fumes may cause a threat to life and equipment. 6491B to BS 7211 cables produce no corrosive gasses when
burnt and which is particularly important where electronic equipment is installed. 6491B is equivalent to
harmonized code H05Z-U/ H07Z-U/H07Z-R.
Cable Construction
Bare copper made of solid/strands conductor
Solid to BS 6360 Class 1 or IEC 60228 Class 1(H05Z-U/H07Z-U)
Stranding to BS 6360 Class 2 or IEC 60228 Class 2(H07Z-R)
LSOH thermosetting core insulation type EI5
Core Identification
Green/Yellow, Black, Blue, Brown, Red, White, Yellow, Grey, Violet,Grey, Orange, Pink
Technical Characteristics
Working voltage: 300/500 volts(H05Z-R), 450/750 volts(H07Z-U/H07Z-R)
Test voltage: 2000 volts(H05Z-R), 2500 volts(H07Z-U/H07Z-R)
Minimum bending radius: up to 10 mm² 3xoverall diameter,
above 25 mm² 6xoverall diameter
Operating temperature: +0º C to +90º C
Short circuit temperature: +250º C
Insulation resistance: 10 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 Overall Diameter mm |
Nominal Copper Weight kg/km | Nominal Weight kg/km |
| H05Z-U | |||||
| 20 | 1x0.5 | 0.6 | 2.0 | 4.8 | 8 |
| 18 | 1x0.75 | 0.6 | 2.2 | 7.2 | 12 |
| 17 | 1x1 | 0.6 | 2.3 | 9.6 | 14 |
| H07Z-U | |||||
| 16 | 1x1.5 | 0,7 | 2.8 | 14.4 | 20 |
| 14 | 1x2.5 | 0,8 | 3.3 | 24 | 30 |
| 12 | 1x4 | 0,8 | 3.8 | 38 | 45 |
| 10 | 1x6 | 0,8 | 4.3 | 58 | 65 |
| 8 | 1x10 | 1,0 | 5.5 | 96 | 105 |
| H07Z-R | |||||
| 16(7/24) | 1x1.5 | 0.7 | 3.0 | 14.4 | 21 |
| 14(7/22) | 1x2.5 | 0.8 | 3.6 | 24 | 33 |
| 12(7/20) | 1x4 | 0.8 | 4.1 | 39 | 49 |
| 10(7/18) | 1x6 | 0.8 | 4.7 | 58 | 71 |
| 8(7/16) | 1x10 | 1 | 6 | 96 | 114 |
| 6(7/14) | 1x16 | 1 | 6.8 | 154 | 172 |
| 4(7/12) | 1x25 | 1.2 | 8.4 | 240 | 265 |
| 2(7/10) | 1x35 | 1.2 | 9.3 | 336 | 360 |
| 1(19/13) | 1x50 | 1.4 | 10.9 | 480 | 487 |
| 2/0(19/11) | 1x70 | 1.4 | 12.6 | 672 | 683 |
| 3/0(19/10) | 1x95 | 1.6 | 14.7 | 912 | 946 |
| 4/0(37/12) | 1x120 | 1.6 | 16 | 1152 | 1174 |
| 300MCM(37/11) | 1x150 | 1.8 | 17.9 | 1440 | 1448 |
| 350MCM(37/10) | 1x185 | 2.0 | 20.0 | 1776 | 1820 |
| 500MCM(61/11) | 1x240 | 2.2 | 22.7 | 2304 | 2371 |
| (61/10) | 1x300 | 2.4 | 25.4 | 2980 | 3050 |
| (61/9) | 1x400 | 2.6 | 28.8 | 3765 | 3842 |
| (61/8) | 1x500 | 2.8 | 32.8 | 4725 | 4900 |
| (127/10) | 1x630 | 2.8 | 36.5 | 6205 | 6334 |