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Product

BS 5308-2 Type 1 PVC instrumentation cableBS 5308 Part 2 Type 1300/500 V · PVC InsulatedCAM / ICAM · L/R ≤ 25–40 µH/Ω

BS 5308 Part 2 Type 1 Instrumentation CableBritish Standard PVC-insulated CAM or ICAM unarmoured instrumentation cable

British Standard 300/500 V unarmoured instrumentation cable built to BS 5308 Part 2 Type 1 with Class 1, 2 or 5 copper conductors, PVC (TI 1) core insulation, CAM or ICAM Al/PET screen with 0.5 mm² tinned drain wire and PVC (TM 1) or LSZH sheath.

Low-EMC design
EMC screen
Flame-retardant
Oil-resistant
Order designation
BS5308-2-T1 5P×0.5 ICAM
Outer Ø ≈
12.8 mm
Copper weight
72 kg/km
Total weight ≈
186 kg/km
Min. bend R (fixed)
77 mm
All sizes (17)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
300/500 V
BS 5308-2 · 1000/2000 V AC test
Insulation
PVC (Type TI 1)
BS EN 50363-3 · −40…+70 °C
Screening
CAM or ICAM
Al/PET foil + 0.5 mm² drain wire
Max. L/R ratio
≤ 25 / 40 µH/Ω
0.5–1.0 mm² (25) · 1.5 mm² (40)
Capacitance
≤ 250 pF/m
core-to-core at 1 kHz (TI 1 PVC)
Bend radius
6 × OD
fixed routing · 8 × OD ICAM

Typical values for this cable type, based on BS 5308-2 Type 1 (300/500 V) — confirmed in the datasheet and quotation for your order.

Application fit

Is BS 5308 Part 2 Type 1 right for your machine?

Originally standardised by the British chemical industry for indoor and sheltered cable trays, marshalling cabinets, containment trunking and general process control loops where PVC core flexibility and cost-efficiency are preferred.

Fixed installation

Suitable

Pliable PVC (TI 1) core insulation terminates rapidly in high-density DCS and PLC marshalling cabinets.

Offshore platform & shipboard deck trays

Suitable

UV-stabilised Black RAL 9005 PVC or LSZH sheath is suitable for sheltered outdoor cable trays.

TBM gantry & advancing tunnel reel

Not suitable

Type 1 is unarmoured; specify BS 5308 Part 2 Type 2 (SWA) for direct burial without ducts.

Use BS 5308 Part 2 Type 2

Energy chain / drag chain

Not suitable

Static British Standard process cable; not designed for dynamic drag chains.

PUR Drag-Chain Control Cable
Typical machinesChemical & Fine-Chemical Processing PlantsWater & Wastewater Treatment WorksFood, Beverage & Brewing AutomationPower Stations & Industrial Boiler HousesBuilding Management & HVAC Telemetry

Construction

Layer by layer

Shown: BS 5308 Part 2 Type 1 ICAM 5P×0.5 mm² (16/0.20 mm) with PVC (TI 1) Black/Blue numbered pairs, individual Al/PET pair screens (ICAM), collective Al/PET screen and Black or Ex-i Blue PVC/LSZH outer sheath.

123456
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Plain annealed copper conductorsIEC 60228 Class 5 (16/0.20, 24/0.20, 32/0.20 mm), Class 1 (1/0.80 mm) or Class 2 (7/0.53 mm)Exact BS 5308-2 conductor stranding classes
2PVC core insulation (Type TI 1)Extruded PVC Type TI 1 to BS EN 50363-3 (≥ 25 MΩ·km at +20 °C, ≤ 250 pF/m)More supple and flame-retardant at the core level than PE
3Individual pair screen (ICAM option)Aluminium/PET tape in contact with 0.5 mm² (16/0.20 mm) tinned copper drain wire per pairIsolates adjacent pairs on 2P to 50P multi-pair cables
4Polyester binder tapeHelical PET wrap over the laid-up pairs or triplesSeparates pair bundle from collective screen
5Collective Aluminium Mylar screen (CAM)Aluminium/PET tape with 0.5 mm² (16/0.20 mm) tinned copper drain wire100 % electrostatic shielding
6Flame-retardant PVC or LSZH outer sheathExtruded PVC Type TM 1 (BS EN 50363-4-1) or LSZH Type LTS 1 with ripcord, Black or Ex-i BlueBS EN 60332-1-2 & BS EN 60332-3-24 flame retardant

Part 2 Type 1 CAM (Collective Screen)

PVC-insulated pairs/triples with overall Al/PET foil screen + 0.5 mm² drain wire

Part 2 Type 1 ICAM (Indiv. + Collective)

Individual Al/PET pair screens + overall Al/PET screen for multi-pair trunks

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on BS 5308-2 Type 1 (300/500 V). Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U
300/500 V
Test voltage
1000 V AC (core/screen) · 2000 V AC (core/core)
Insulation resistance
≥ 25 MΩ·km at +20 °C (PVC Type TI 1)
Max. mutual capacitance (at 1 kHz)
≤ 250 pF/m (core/core) · ≤ 450 pF/m (core/screen)
Max. L/R ratio
≤ 25 µH/Ω (0.5–1.0 mm²) · ≤ 40 µH/Ω (1.5 mm²)

Thermal

Operating temperature, fixed
−40 °C to +70 °C
Operating temperature, flexing
0 °C to +50 °C

Mechanical

Min. bending radius
6 × OD (CAM) · 8 × OD (ICAM)
Pair lay length
50 mm to 100 mm (staggered lays)

Resistance

Flame retardance
BS EN 60332-1-2 & BS EN 60332-3-24 (Cat C)
LSZH option
BS EN 60754-1/2 & BS EN 61034-2 available

Reference standards

Design standard
BS 5308-2 / PAS 5308-2 Type 1
Conductor standard
BS EN 60228 (Class 1, Class 2 & Class 5)

Identification

Core identification
Pairs: Black / Blue numbered (or multi-colour coding per App. A)
Outer sheath colour
Black (RAL 9005) or Blue (RAL 5015 Ex-i)
Customs tariff (HS)
8544.49

Sizes

17 standard BS 5308 Part 2 Type 1 (PVC Unarmoured) sizes

1, 2, 5, 10, 20 pair CAM and ICAM schedules with PVC Type TI 1 core insulation.

Dimensions & weights
Order designationFormat & strandingScreenOuter Ø ≈
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
0.5 mm² (16/0.20 mm Class 5) — PVC Insulated Type 1
BS5308-2-T1 1P×0.5 CAM1×2×0.5 mm² (16/0.20)CAM6.2165237
BS5308-2-T1 2P×0.5 CAM2×2×0.5 mm² (16/0.20)CAM9.2269255
BS5308-2-T1 5P×0.5 ICAM5×2×0.5 mm² (16/0.20)ICAM12.87218677
BS5308-2-T1 10P×0.5 ICAM10×2×0.5 mm² (16/0.20)ICAM17.0138322102
BS5308-2-T1 20P×0.5 ICAM20×2×0.5 mm² (16/0.20)ICAM22.1268560133
0.75 mm² (24/0.20 mm Class 5) — PVC Insulated Type 1
BS5308-2-T1 1P×0.75 CAM1×2×0.75 mm² (24/0.20)CAM6.7216240
BS5308-2-T1 2P×0.75 CAM2×2×0.75 mm² (24/0.20)CAM10.03611060
BS5308-2-T1 5P×0.75 ICAM5×2×0.75 mm² (24/0.20)ICAM13.99622483
BS5308-2-T1 10P×0.75 ICAM10×2×0.75 mm² (24/0.20)ICAM18.6186396112
1.0 mm² (32/0.20 mm Class 5) — PVC Insulated Type 1
BS5308-2-T1 1P×1.0 CAM1×2×1.0 mm² (32/0.20)CAM7.1267243
BS5308-2-T1 5P×1.0 ICAM5×2×1.0 mm² (32/0.20)ICAM14.812226689
BS5308-2-T1 10P×1.0 ICAM10×2×1.0 mm² (32/0.20)ICAM19.8236468119
1.5 mm² (7/0.53 mm Class 2) — PVC Insulated Type 1
BS5308-2-T1 1P×1.5 CAM1×2×1.5 mm² (7/0.53)CAM7.9369047
BS5308-2-T1 2P×1.5 CAM2×2×1.5 mm² (7/0.53)CAM12.06516272
BS5308-2-T1 5P×1.5 ICAM5×2×1.5 mm² (7/0.53)ICAM16.6172345100
BS5308-2-T1 10P×1.5 ICAM10×2×1.5 mm² (7/0.53)ICAM22.6336615136
BS5308-2-T1 20P×1.5 ICAM20×2×1.5 mm² (7/0.53)ICAM29.86621,110179
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Also available in 6, 12, 24 and 36-core unscreened or collectively screened multipair/multicore configurations per BS 5308-2.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
1000 V AC core-to-screen & 2000 V AC core-to-core dielectric test5 min / 1 min AC withstand test without breakdownEvery manufactured drum
Mutual capacitance & L/R ratio verificationC ≤ 250 pF/m; L/R ≤ 25 / 40 µH/ΩEvery manufactured drum

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

BS 5308-2 / PAS 5308-2 Type 1 CompliantBS EN 60332-1-2 & BS EN 60332-3-24UKCA, CE, RoHS 2 & REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX BS 5308 PART 2 TYPE 1 <size> 300/500V CAM/ICAM CE
Delivery form
Non-returnable fumigated wooden drums
Standard lengths
500 m · 1000 m standard drums (cut lengths on request)
MOQ
500 m (stock sizes) · 1000 m (custom)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFBS 5308 Part 2 Type 1 Instrumentation Cable – technical datasheet17 sizes · construction, technical data, approvalsXLSXBS 5308 Part 2 Type 1 spec data (Excel)All 17 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

When is BS 5308 Part 2 Type 1 preferred over BS 5308 Part 1 Type 1?
Part 2 Type 1 uses PVC (TI 1) core insulation instead of Polyethylene (PE). PVC cores are softer, hold their shape when dressed inside marshalling panels, are inherently self-extinguishing when stripped back inside cabinets, and are more economical for general chemical, water, and food-processing plants where the lower capacitance of PE is not required.
What is the European EN 50288-7 equivalent to BS 5308 Part 2 Type 1?
The closest European EN 50288-7 counterpart is RE-Y(st)Y (collective screen) or RE-Y(st)Y PiMF (individual + collective screen), which also uses PVC core insulation and a PVC outer sheath, though BS 5308 Part 2 retains British Class 5 flexible stranding (16/0.20, 24/0.20, 32/0.20 mm) on 0.5–1.0 mm² sizes.
Can BS 5308 Part 2 Type 1 be used on intrinsically safe (Ex-i) circuits?
Yes — it meets the exact same ≤ 25 µH/Ω (0.5–1.0 mm²) and ≤ 40 µH/Ω (1.5 mm²) L/R ratio limits as Part 1 and is supplied with a RAL 5015 Blue sheath for Ex-i identification, provided the total run length keeps cable capacitance (≤ 250 pF/m) within the Zener barrier or galvanic isolator Co budget.
How should the screen and drain wire of BS 5308 Part 2 Type 1 be earthed in instrumentation and Ex-i loops?
To prevent circulating 50/60 Hz ground-loop currents from coupling into millivolt or 4–20 mA signals, the Al/PET screen and tinned copper drain wire of BS 5308 Part 2 Type 1 should be bonded to the clean instrumentation earth bar at one end only (typically in the control/marshalling cabinet) and insulated against chassis contact at the field transmitter or junction box, in accordance with IEC 60079-14 and EN 50288-7.

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BS 5308 Part 2 Type 1 Instrumentation Cable

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