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BS7211 Cables |  |
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| 2491B/6701B Single Core Cable |
BS 7211 Cables
6491B Conduit Wiring Cable
Application and Description
6491B is equivalent to harmonized code H07Z-R, these cables are designed for fixed wiring purposes in domestic and industrial power/ lighting applications. Can be used in trunking or conduit, or may be surface mounted when used for earthing. and generally in areas (such as public and government buildings) where smoke and toxic fumes may cause a threat to life and equipment. The cables produce no corrosive gasses when burnt which is particularly important where electronic equipment is installed.
Cable Construction
Strands to IEC 60228 Cl-2 LSOH thermosetting insulation
-Thermosetting core insulation type EI5
-LSOH - low smoke, zero halogen
Insulation Colour
Black, Blue, Green/Yellow, Red, Yellow, White, Violet, Brown, Grey, Orange, Pink
Technical Characteristics
- Working voltage: 450/750v
-Test voltage: 2500 volts
- Minimum bending radius: up to 10 mm² - 3 x overall diameter,above 25 mm² -6 x overall diameter
-Flexing temperature: +0º C to +90º C
-Short circuit temperature: +250º C
-Insulation resistance: 10 MΩ x km
-Flame retardant: IEC 60332.1
-Smoke density acc. to EN 50268 / IEC 61034
-Corrosiveness of combustion gases acc. to EN 50267-2-2, IEC 60754-2
-Flame test: flame-retardant acc. to EN 50265-2-1, IEC 60332.1
Cable Parameter
| AWG | No. of Cores x Nominal Cross Sectional Area | Nominal Thickness of Insulation | Nominal Overall Diameter | Nominal CopperWeight | Nominal Weight | Minimum Insulation resistance at 90 °C |
| # x mm² | mm | mm | kg/km | kg/km | MΩ·km | |
| 16(7/24) | 1 x 1.5 | 0.7 | 2.7-3.4 | 14.4 | 21 | 0.010 |
| 14(7/22) | 1 x 2.5 | 0.8 | 3.3-4.1 | 24 | 33 | 0.009 |
| 12(7/20) | 1 x 4 | 0.8 | 3.8-4.7 | 39 | 49 | 0.0077 |
| 10(7/18) | 1 x 6 | 0.8 | 4.3-5.4 | 58 | 71 | 0.0065 |
| 8(7/16) | 1 x 10 | 1 | 5.6-7.0 | 94 | 114 | 0.0065 |
| 6(7/14) | 1 x 16 | 1 | 6.4-8.0 | 154 | 172 | 0.0050 |
| 4(7/12) | 1 x 25 | 1.2 | 8.1-10.1 | 240 | 265 | 0.0050 |
| 2(7/10) | 1 x 35 | 1.2 | 9.0-11.3 | 350 | 397 | 0.0043 |
| 1(19/13) | 1 x 50 | 1.4 | 10.6-13.2 | 480 | 534 | 0.0043 |
| 2/0(19/11) | 1 x 70 | 1.4 | 12.1-15.1 | 672 | 830 | 0.0035 |
| 3/0(19/10) | 1 x 95 | 1.6 | 14.1-17.6 | 912 | 1054 | 0.0035 |
| 4/0(37/12) | 1 x 120 | 1.6 | 15.6-19.4 | 1152 | 1274 | 0.0032 |
| 300MCM(37/11) | 1 x 150 | 1.8 | 17.3-21.6 | 1440 | 1604 | 0.0032 |
| 350MCM(37/10) | 1 x 185 | 2.0 | 19.3-24.1 | 1776 | 2030 | 0.0032 |
| 500MCM(61/11) | 1 x 240 | 2.2 | 22.0-27.5 | 2400 | 2630 | 0.0032 |
| -(61/10) | 1 x 300 | 2.4 | 24.5-30.6 | 3010 | 3330 | 0.0030 |
| -(61/9) | 1 x 400 | 2.6 | 27.5-34.3 | 3820 | 4190 | 0.0028 |
| -(61/8) | 1 x 500 | 2.8 | 30.5-38.2 | 4800 | 5240 | 0.0028 |
| -(127/10) | 1 x 630 | 2.8 | 34.0-42.5 | 6350 | 6820 | 0.0025 |