BS8436 Standard Cable
Multicore electric cables with a voltage rating of 300/500V and low emissions of smoke and corrosive gases when subjected to fire. Manufactured in accordance with British Standard BS8436 for use in building voids, partitions and walls.
British Standard BS8436 specifies requirements for 2-core, 3-core and 4-core cables with an uninsulated full-size circuit protective conductor of tinned annealed copper and metallic screening.
BS8436 Standard Applications
Designed for use in building voids, partitions and walls, cables manufactured to this standard meet the 18th Edition of the Wiring Regulations BS 7671 section 522.6.202 to 522.6.204 as relating to concealed cables at a depth of less than 50mm.
Designed to be electrically fail-safe in the event they are penetrated by a nail or screw, cables manufactured in accordance with BS8436 must pass a nail penetration test six times and maintain functionality on each of these occasions.
The thermostatic voltage rating of cables manufactured in accordance with BS8436 is 300/500V.
With these cables designed for fixed installation inside buildings and constructions, they are required to be compliant with the Construction Products Regulation (CPR).
BS8436 standard cable construction
| Insulated conductor | Plain or tinned annealed copper (Class 1, 2 or 5) |
| Uninsulated circuit protective conductor | Tinned annealed copper of the same class as the insulated conductor |
| Insulation | EI5, GP4, GP6 or GP8 |
| Screen | One or more metallic or laminated metallic tape(s) |
| Outersheath | Type LTS 3 (conforming to BS7655-6.1 |
This standard requires the protective metallic or laminated metallic tape screen as provided for electrical and mechanical protection to be applied longitudinally or helically (or as a combination of the two), placing the metallic side of the tape in direct contact with the uninsulated circuit protective conductor. It also requires the sheathing to have low smoke zero halogen properties, curbing the smoke emissions when subjected to fire and eliminating halogens such as chlorine gas which can be produced through the burning of the materials. This reduced the risk to life and essential equipment, including fire detection and fire alarm systems, in the event of fire.
BS8436 Standard core colour coding
| 2-core + uninsulated circuit protective conductor | Brown, Blue or brown, brown |
| 3-core + uninsulated circuit protective conductor | Brown, black, grey |
| 4-core + uninsulated circuit protective conductor | Blue, brown, black, grey |
Accessories to match the BS8436 cable range are available - speak to our sales team for more information.
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