BS5308 Cable

Instrumentation cables manufactured in accordance with British Standard BS5308

BS-5308-cable-standard

Whilst this British Standard was superseded by the Harmonised Standard BS EN 50288-7 in 2005 it is still widely referred to because the Harmonised Standard does not account for the higher voltage ratings and cable dimensions. A publicly available version of the Standard was published as PAS5308 in 2009.

British Standard BS5308 covers specifications for a range of instrumentation cables which we supply. These are available in a multitude of variants including Polyethylene (PE), Polyvinyl Chloride (PVC), Cross-Linked Polyethylene (XLPE), and Low Smoke Zero Halogen (LSZH) insulation materials, and armoured instrumentation cables.

BS5308 Part 1 - PE insulated instrumentation cables - British Standard BS5308 Part 1 specifies both the requirements and the dimensions of PE insulated cables in pairs with or without screen(s). It provides the option to incorporate a single wire armour or single wire armour with a lead sheath. Part 1 is further categorised as Types 1, 2 & 3.

BS5308 Part 1 Type 1 - Unarmoured - collectively screened (CAM) and individually & collectively screened (IAM/CAM or  ICAT). PE insulated and PVC oversheathed.

BS5308 Part 1 Type 2 - Armoured - collectively screened and also individually & collectively screened. PE insulated, PE bedded, single wire armoured (SWA) and PVC oversheathed.

BS5308 Part 1 Type 3 - Armoured - collectively screened or individually & collectively screened. PE insulated, PVC bedded, lead alloy oversheath, single wire armoured and PVC oversheathed.

BS5308 Part 2 - PVC insulated instrumentation cables - British Standard BS5308 Part 2 specifies requirements for PVC insulated cables, in multicore and multi-pair construction, with or without screens. It provides the option to incorporate a single wire armour. Part 2 is further categorised as Types 1 & 2.

BS5308 Part 2 Type 1 - Unarmoured construction - PVC insulated and PVC oversheathed.

BS5308 Part 2 Type 2 - Armoured construction - PVC insulated, PVC bedded, single wire armoured and PVC oversheathed.

Construction comparison of BS5308, PAS5308 and BS EN 50288-7

  BS5308-1 BS5308-2 PAS5308-1 PAS5308-2 BSEN 50288-7
Conductor Plain annealed copper, solid or stranded (BS6360) Plain annealed copper, stranded (BS6360) Plain annealed copper, multi-stranded (BS EN 60228) Plain annealed copper, multi-stranded (BS EN 60228) Plain annealed or metal-coated, solid or stranded (IEC 60288)
Conductor size 0.5mm2 to 1.5mm2 0.5mm2 to 1.5mm2 0.5mm2 to 2.5mm2 0.5mm2 to 2.5mm2 0.5mm2 to 4.0mm2
Voltage range 300/500V 300/500V 300/500V 300/500V 90V, 300V, 500V
Insulation PE Type 03 Polyvinyl Chloride (PVC) Type TI1 Thermoplastic PE or Cross-linked Polyethylene (XLPE) PVC Type TI51 PVC, PE, XLPE, Polypropylene or Halogen-free flame retardant compound
Formation Core pair twisted quad Core pair twisted quad Core pair twisted quad Core pair twisted quad Twisted core pair, triple or quad
Individual and/or Screen Aluminium foil laminate tape (PET) Al/PET Al/PET Al/PET Al/PET
Drain Wire Solid or stranded tinned annealed copper Solid or stranded tinned annealed copper Solid or stranded tinned annealed copper Solid or stranded tinned annealed copper Solid tinned copper
Braid Not defined Not defined Not defined Not defined Tinned copper wires
Covering Not defined Not defined Not defined Not defined Lead sheath to EN 50307
Inner Sheath Extruded PE compound Type 2C or Extruded Polyvinyl Chloride (PVC) Type TM1 Extruded PVC Type TM1 Extruded PE compound Type 2 or Extruded PVC Type TM51 Extruded PVC Type TM51 PVC, PE or Low Smoke Zero Halogen (LSZH) compound
Armour Galvanised steel wire armour (GSWA) GSWA GSWA GSWA Steel wire armour (SWA)
Moisture barrier Not defined Not defined Not defined Not defined Water-swellable tape, water-swellable non-toxic powder, filling compound, laminated sheath of a longitudinally overlapped metallic foil, or a combination of all
Outer sheath Extruded Polyvinyl Chloride (PVC) Type TM1 Extruded PVC Type TM1 (type 1 & 2) Extruded PVC Type TM51 Extruded PVC Type TM51 PVC, PE or Low Smoke Zero Halogen (LSZH) compound

BS5308 cable colour coding

BS5308 cables are manufactured with colour-coded insulated pairs or with numbering and black/blue insulated pairs. For information on the pair colours, please see the BS5308 colour code chart in our FAQs.
Our technical team has a wealth of experience with the design, manufacturing and testing of instrumentation cables to BS5308, PAS5308 and BS EN 50288-7. We also support European instrumentation cable standards BS EN 50288-7 and other national standards including SANS 1411 APL cables. Please contact us for technical support with your application's design and with cable selection.  
Fastquote En

Your tailored quote direct to your inbox

Your basket is currently empty

Project Services

Project services

Our extensive portfolio is backed by a wide range of services that help your project run smoothly, together providing a complete cable solution

Learn more
Lab Black

Cable Testing

Learn more about our UKAS accredited ISO 17025 testing laboratory, our specialist MV test facility, and the tests that provide quality and compliance assurance

Read on
Calculator White

Cable calculator

Use our cable calculator to aid with cable sizing in accordance with British BS7671 and International IEC 60364-5-52 standards

Calculate cable size