6241B/6242B/ 6243B, LSOH Flat Wiring Cables with circuit protective conductor

Application and Description

These cables are suitable for fixed installation particularly for situations in which low emission smoke and domestic wiring cable for the surface wiring of sockets and lighting where fire, smoke emission and toxic fumes create a potential threat to life and equipment. Can be installed in fixed installations in dry or damp premises on walls, boards or trays, in channels or embedded in plaster. Suitable for laying in conduit or trunking where mechanical protection is required.

Cable Construction

  • Fine bare copper strands
  • Strands to IEC 60228 Cl-1 or 2
  • Thermosetting core insulation type EI5 or GP 8
  • The core or cores shall be laid parallel with the uninsulated circuit protective conductor
  • For twin cores, the protective conductor centrally placed between cores in same plane
  • For 3 cores, the protective conductor centrally placed between black and grey cores in same plane
  • LSOH sheath, type LTS 2

BS7211 Cables

BS7211 Cables

Insulation Colour

Single core brown or blue
Twin brown and blue, or, for 2 × 1.0 and 2 × 1.5 cables, brown and brown
3-core brown, black (centre core) and grey

BS7211 Cables

BS7211 Cables

Technical Characteristics

Working voltage 300/500v
Test voltage 2000 volts
Flexing bending radius 15 x Ø
Static bending radius 10 x Ø
Flexing temperature +5 ºC to +90 ºC
Short circuit temperature +250 ºC
Flame retardant IEC 60332.1
Insulation resistance 10 MΩ x km
  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 thickness of sheath Nominal overall dimensions Circuit protective conductor Nominal Weight Minimum insulation resistance at 90 °C
lower limit upper limit
# x mm² mm mm mm mm AWG kg/km MΩ·km
6241B
17 1 × 1.0 0.7 0.9 4.1 × 5.2 5.0 × 6.3 17 45 0.011
16 1 × 1.5 0.7 0.9 4.4 × 5.4 5.3 × 6.6 17 55 0.011
6242B
17 2 × 1.0 0.7 0.9 4.1 × 7.6 5.0 × 9.1 17 68 0.011
17(7/26) 2 × 1.0 0.7 0.9 4.2 × 7.8 5.1 × 9.4 17 73 0.011
16 2 × 1.5 0.7 0.9 4.4 × 8.1 5.3 × 9.7 17 85 0.011
16(7/24) 2 × 1.5 0.7 0.9 4.5 × 8.3 5.4 × 10.0 17 90 0.011
14 2 × 2.5 0.7 1.0 4.9 × 9.3 6.0 × 11.2 16 120 0.0092
14(7/22) 2 × 2.5 0.7 1.0 5.0 × 9.5 6.1 × 11.4 16 125 0.0084
12(7/20) 2 × 4 0.7 1.0 5.5 × 10.4 6.7 × 12.6 16 175 0.0070
10(7/18) 2 × 6 0.7 1.1 6.2 × 12.0 7.5 × 14.6 14 240 0.0059
8(7/16) 2 × 10 0.7 1.2 7.3 × 14.5 8.8 × 17.6 12(7/20) 390 0.0047
6(7/14) 2 × 16 0.7 1.3 8.4 × 17.0 10.1 × 20.5 10(7/18) 560 0.0039
6243B
17 3 × 1.0 0.7 0.9 4.1 × 10.0 5.1 × 12.1 17 91 0.011
16 3 × 1.5 0.7 0.9 4.4 × 10.7 5.3 × 12.9 17 115 0.011
14 3 × 2.5 0.7 1.0 4.9 × 12.0 6.0 × 14.6 17 170 0.0092
12(7/20) 3 × 4 0.7 1.0 5.5 × 14.0 6.7 × 16.9 16 196 0.0070
10(7/18) 3 × 6 0.7 1.1 6.2 × 16.2 7.5 × 19.5 14 291 0.0059
8(7/16) 3 × 10 0.7 1.2 7.3 × 19.5 8.8 × 23.6 12(7/20) 440 0.0047
6(7/14) 3 × 16 0.7 1.3 8.4 × 22.8 10.1 × 27.6 10(7/18) 670 0.0039
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