2491B/6701B to BS 7211
Application and Description
These flexible cable are used in panel, conduit and general fixed wiring applications where there is a requirement for flexibility during installation and in the event of fire, a need to minimize the risk from smoke and toxic fumes but where circuit integrity is not required. Not suitable for wet or immersed applications. 2491B/6701B is equivalent to harmonized code H05Z-K/H07Z-K.
Cable Construction
| Fine bare copper strands |
| Stranding to to BS 6360 Class 5 or IEC 60228 Class 5 |
| 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 |
300/500v (2491B), 450/750v (6701B) |
| Test voltage |
2000 / 2500 volts |
| Minimum bending radius |
5xOverall diameter |
| Flexing temperature |
-15 oC to +90 oC |
| Static temperature |
-40 oC to +90 oC |
| 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 |
Nominal Thickness of Insulation |
Nominal Overall Diameter |
Nominal Copper Weight |
Nominal Weight |
| #xmm^2 |
mm |
mm |
kg/km |
kg/km |
| 2491B |
| 20(16/32) |
1x0.5 |
0.6 |
2.1-2.6 |
4.8 |
9 |
| 18(24/32) |
1x0.75 |
0.6 |
2.2-2.8 |
7.2 |
12.4 |
| 17(32/32) |
1x1 |
0.6 |
2.4-2.9 |
9.6 |
15 |
| 6701B |
| 16(30/30) |
1x1.5 |
0.7 |
2.8-3.5 |
14.4 |
24 |
| 14(50/30) |
1x2.5 |
0.8 |
3.4-4.3 |
24 |
35 |
| 12(56/28) |
1x4 |
0.8 |
3.9-4.9 |
38 |
51 |
| 10(84/28) |
1x6 |
0.8 |
4.4-5.5 |
58 |
71 |
| 8(80/26) |
1x10 |
1.0 |
5.7-7.1 |
96 |
118 |
| 6(128/26) |
1x16 |
1.0 |
6.7-8.4 |
154 |
180 |
| 4(200/26) |
1x25 |
1.2 |
8.4-10.6 |
240 |
278 |
| 2(280/26) |
1x35 |
1.2 |
9.7-12.1 |
336 |
375 |
| 1(400/26) |
1x50 |
1.4 |
11.5-14.4 |
480 |
560 |
| 2/0(356/24) |
1x70 |
1.4 |
13.2-16.6 |
672 |
780 |
| 3/0(485/24) |
1x95 |
1.6 |
15.1-18.8 |
912 |
952 |
| 4/0(614/24) |
1x120 |
1.6 |
16.7-20.9 |
1152 |
1200 |
| 300MCM (765/24) |
1x150 |
1.8 |
18.6-23.3 |
1440 |
1505 |
| 350MCM (944/24) |
1x185 |
2.0 |
20.6-25.8 |
1776 |
1845 |
| 500MCM(1225/24) |
1x240 |
2.2 |
23.5-29.4 |
2304 |
2400 |
