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Product

BS 5308-1 Type 1 PE instrumentation cableBS 5308 Part 1 Type 1300/500 V · CAM / ICAMPE or XLPE · L/R ≤ 25–40 µH/Ω

BS 5308 Part 1 Type 1 Instrumentation CableBritish Standard PE/XLPE-insulated CAM or ICAM unarmoured instrumentation cable

British Standard 300/500 V unarmoured instrumentation cable built to BS 5308 Part 1 Type 1 with Class 1, 2 or 5 copper conductors, low-capacitance PE (Type 03) or XLPE insulation, CAM or ICAM Al/PET screen with drain wire and PVC or LSZH sheath.

Low-EMC design
EMC screen
Flame-retardant
Oil-resistant
Order designation
BS5308-1-T1 5P×0.5 ICAM
Outer Ø ≈
13.4 mm
Copper weight
72 kg/km
Total weight ≈
198 kg/km
Min. bend R (fixed)
80 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 5308-1 · 1000/2000 V AC test
Insulation
PE or XLPE
BS 6234 Type 03 PE · +70/+90 °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
≤ 75–115 pF/m
75–85 pF/m CAM · 115 pF/m ICAM
Bend radius
6 × OD
fixed routing · 8 × OD ICAM

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

Application fit

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

Specified across UK, Middle East and Commonwealth oil, gas, petrochemical and pharmaceutical plants for indoor/sheltered cable trays, conduits and intrinsically safe Ex-i process loops.

Fixed installation

Suitable

Designed for indoor marshalling rooms, containment conduits, cable baskets and sheltered pipe racks.

Offshore platform & shipboard deck trays

Suitable

UV-resistant Black RAL 9005 PVC or LSZH outer sheath handles open-air tray installations.

TBM gantry & advancing tunnel reel

Not suitable

Type 1 is unarmoured and must be run in ducts underground; specify BS 5308 Part 1 Type 2 (SWA) for direct burial.

Use BS 5308 Part 1 Type 2

Energy chain / drag chain

Not suitable

Static British Standard process cable; not engineered for continuous drag-chain flexing.

PUR Drag-Chain Control Cable
Typical machinesUK & Middle East Oil & Gas RefineriesIntrinsically Safe (Ex-ia / Ex-ib) TelemetryChemical, Pharmaceutical & Water PlantsPower Generation & DesalinationDCS & ESD Safety Instrumented Systems

Construction

Layer by layer

Shown: BS 5308 Part 1 Type 1 ICAM 5P×0.5 mm² (16/0.20 mm) with PE-insulated colour-coded & numbered pairs, individual Al/PET pair screens (ICAM), collective Al/PET screen and Black or Ex-i Blue PVC/LSZH 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, 1/1.13 mm) or Class 2 (7/0.53 mm)Exact BS 5308-1 conductor stranding classes per cross-section
2Polyethylene (PE) or XLPE insulationSolid PE Type 03 to BS 6234 (+70 °C) or thermoset XLPE (+90 °C)Guarantees ≥ 5 GΩ·km insulation resistance and ≤ 75–115 pF/m mutual capacitance
3Individual pair screen (ICAM option)Aluminium/PET tape (≥ 24 µm Al) in contact with 0.5 mm² (16/0.20 mm) tinned copper drain wireIsolates individual pairs on 2P to 50P multi-pair cables
4Polyester binder tapeHelical PET tape over laid-up pairs, triples or quadsSeparates 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 TM1 (BS EN 50363-4-1) or LSZH (BS 7655 LTS1) with ripcord, Black or BlueIEC 60332-1-2 / IEC 60332-3-24 flame retardant

Part 1 Type 1 CAM (Collective Screen)

PE/PVC or XLPE/LSZH with overall Al/PET foil screen + 0.5 mm² drain wire

Part 1 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 5308-1 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 rms AC (core/screen) · 2000 V rms AC (core/core)
Insulation resistance
≥ 5000 MΩ·km at +20 °C
Max. mutual capacitance (at 1 kHz)
≤ 75–85 pF/m (CAM) · ≤ 115 pF/m (ICAM)
Max. L/R ratio
≤ 25 µH/Ω (0.5–1.0 mm²) · ≤ 40 µH/Ω (1.5 mm²)

Thermal

Operating temperature (PE / PVC)
−40 °C to +70 °C (fixed)
Operating temperature (XLPE / LSZH)
−40 °C to +90 °C (fixed)
Installation temperature
0 °C to +50 °C

Mechanical

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

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 (XLPE/LSZH version)

Reference standards

Design standard
BS 5308-1 / PAS 5308-1 Type 1
Conductor standard
BS EN 60228 (Class 1, Class 2 & Class 5)
Pair count schedule
1, 2, 5, 10, 15, 20, 30, 50 pairs & 1–20 triples

Identification

Core identification
Pairs: Black / Blue numbered (Triples: Black / Blue / Brown)
Outer sheath colour
Black (RAL 9005) or Blue (RAL 5015 Ex-i)
Customs tariff (HS)
8544.49

Sizes

17 standard BS 5308 Part 1 Type 1 (CAM & ICAM) sizes

Follows the British Standard 1, 2, 5, 10, 20, 30, 50 pair progression and exact BS 5308 conductor stranding.

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 or 1/0.80 mm Class 1) — L/R ≤ 25 µH/Ω
BS5308-1-T1 1P×0.5 CAM1×2×0.5 mm² (16/0.20)CAM6.5165639
BS5308-1-T1 2P×0.5 CAM2×2×0.5 mm² (16/0.20)CAM9.6269858
BS5308-1-T1 5P×0.5 ICAM5×2×0.5 mm² (16/0.20)ICAM13.47219880
BS5308-1-T1 10P×0.5 ICAM10×2×0.5 mm² (16/0.20)ICAM17.8138342107
BS5308-1-T1 20P×0.5 ICAM20×2×0.5 mm² (16/0.20)ICAM23.2268595139
0.75 mm² (24/0.20 mm Class 5) — L/R ≤ 25 µH/Ω
BS5308-1-T1 1P×0.75 CAM1×2×0.75 mm² (24/0.20)CAM7.0216642
BS5308-1-T1 2P×0.75 CAM2×2×0.75 mm² (24/0.20)CAM10.53611863
BS5308-1-T1 5P×0.75 ICAM5×2×0.75 mm² (24/0.20)ICAM14.69623888
BS5308-1-T1 10P×0.75 ICAM10×2×0.75 mm² (24/0.20)ICAM19.6186422118
1.0 mm² (1/1.13 mm Class 1 or 32/0.20 mm Class 5) — L/R ≤ 25 µH/Ω
BS5308-1-T1 1P×1.0 CAM1×2×1.0 mm² (1/1.13 or 32/0.20)CAM7.4267644
BS5308-1-T1 5P×1.0 ICAM5×2×1.0 mm² (32/0.20)ICAM15.612228294
BS5308-1-T1 10P×1.0 ICAM10×2×1.0 mm² (32/0.20)ICAM21.0236498126
1.5 mm² (7/0.53 mm Class 2) — L/R ≤ 40 µH/Ω
BS5308-1-T1 1P×1.5 CAM1×2×1.5 mm² (7/0.53)CAM8.2369649
BS5308-1-T1 2P×1.5 CAM2×2×1.5 mm² (7/0.53)CAM12.66517476
BS5308-1-T1 5P×1.5 ICAM5×2×1.5 mm² (7/0.53)ICAM17.5172368105
BS5308-1-T1 10P×1.5 ICAM10×2×1.5 mm² (7/0.53)ICAM23.8336655143
BS5308-1-T1 20P×1.5 ICAM20×2×1.5 mm² (7/0.53)ICAM31.46621,185188
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • 1Q×0.5, 1Q×0.75, 1Q×1.0 and 1Q×1.5 mm² star-quads and 1T–20T triples are also manufactured to BS 5308 Part 1 Type 1.

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 ≤ 75–115 pF/m at 1 kHz; L/R ≤ 25 / 40 µH/ΩEvery manufactured drum
Sample tests
BS EN 60332-3-24 Cat C vertical tray flame testPass bunched vertical flame propagation testPeriodic audit

Inspection certificate

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

Product approvals

BS 5308-1 / PAS 5308-1 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 1 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 1 Type 1 Instrumentation Cable – technical datasheet17 sizes · construction, technical data, approvalsXLSXBS 5308 Part 1 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.

What is the difference between BS 5308 Part 1 and BS 5308 Part 2?
BS 5308 Part 1 specifies Polyethylene (PE) or Cross-Linked Polyethylene (XLPE) core insulation for low mutual capacitance (≤ 75–115 pF/m) and high insulation resistance (≥ 5000 MΩ·km), originally developed for petrochemical and oil-refinery plants. BS 5308 Part 2 specifies PVC core insulation (≤ 250 pF/m) for general process and chemical industry installations.
What is the difference between Type 1 and Type 2 in BS 5308 Part 1?
Type 1 is unarmoured (PE/XLPE cores, CAM or ICAM screen, and PVC or LSZH outer sheath) for indoor and sheltered tray routing. Type 2 adds an extruded inner bedding, Galvanised Steel Wire Armour (SWA), and an outer sheath (plus an optional lead or polyamide moisture/hydrocarbon barrier) for direct burial and heavy mechanical duty.
How does BS 5308 core colour identification differ from EN 50288-7?
BS 5308 pairs use Black and Blue cores with printed pair numbers (and Black, Blue, Brown for triples), whereas EN 50288-7 (RE-2Y(st)Y) uses Black and White numbered cores (Black, White, Red for triples).
How should the screen and drain wire of BS 5308 Part 1 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 1 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 1 Type 1 Instrumentation Cable

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