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Product

BT CW1308BT CW1308 / BS 6746150 V−15…+70 °C

CW1308 PVC-Insulated Multipair Internal Telephone & Voice CableBT CW1308 / BS 6746 · 150 V · -15 °C to +70 °C industrial CW1308 construction

CW1308 PVC-Insulated Multipair Internal Telephone & Voice Interconnect Cable (CW1308) engineered to BT CW1308 / BS 6746 for 150 V service across -15 °C to +70 °C, featuring stranded copper conductor and pvc outer sheath with minimum bending radius 6 × OD.

Approved

Flame-retardant

Oil-resistant

Configuration

Order designation: CW1308 4×2×1.0
Outer Ø ≈: 13.5 mm
Total weight ≈: 264 kg/km
Min. bend R (fixed): 108 mm
Configuration: 4×2×1.0 mm²

All sizes (12)

Request a quote Datasheet WhatsApp info@tebaoflex.com

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: 150 V
Operating temp.: −15…+70 °C
Min. bend radius: 6 × OD
Conductor: copper conductor
Outer layer: PVC outer sheath
Standard: BT CW1308

Typical values for this cable type, based on BT CW1308 / BS 6746 — confirmed in the datasheet and quotation for your order.

Application fit

Is CW1308 right for your machine?

Fixed installation

Suitable

Engineered and verified for fixed service in accordance with BT CW1308 / BS 6746.

Switchgear & control cabinet wiring

Suitable

Engineered and verified for cabinet chassis service in accordance with BT CW1308 / BS 6746.

TBM gantry & advancing tunnel reel

With conditions

Use mechanical conduit or armoured protection where exposed to rock fall or crushing loads.

Motorised monospiral reel

Not suitable

Not designed for high-speed monospiral crane reeling; select a dedicated reeling cable.

NSHTOU Reeling Cable

Typical machinesBuilding & Fire SafetyCommercial & Residential Building DistributionData Centers & Public InfrastructureFire-Safe Evacuation & Riser ShaftsIndustrial Plant Balance-of-Plant Wiring

Construction

Layer by layer

Shown: CW1308 (BT CW1308 / BS 6746) with stranded copper conductor, pvc core insulation and pvc outer sheath (4-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Stranded copper conductor	High-conductivity copper conductor per BT CW1308 / BS 6746BT CW1308 / BS 6746
2	PVC core insulation	Extruded PVC dielectric (individual core / group layer)BT CW1308 / BS 6746
3	PETP separator	Helically applied petp separatorBT CW1308 / BS 6746
4	PVC outer sheath	Extruded PVC outer sheath protective layer (continuous layer)BT CW1308 / BS 6746

CW1308 — Standard Execution

Built to BT CW1308 / BS 6746 with stranded copper conductor and pvc outer sheath

CW1308 — Custom Cross-Sections

Full range of metric mm² and AWG/kcmil conductor sizes per BT CW1308 / BS 6746

CW1308 — Export Drum Supply

Supplied with EN 10204 3.1 routine dielectric & conductor resistance test certificate

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on BT CW1308 / BS 6746. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / duty: 150 V (BT CW1308 / BS 6746)
Conductor construction: Stranded copper conductor — High-conductivity copper conductor per BT CW1308 / BS 6746
Primary insulation / dielectric: PVC core insulation — Extruded PVC dielectric (individual core / group layer)

Thermal

Continuous operating temperature: −15…+70 °C per BT CW1308 / BS 6746
Short-circuit / peak thermal limit: +160 °C to +250 °C (5 s adiabatic limit depending on dielectric class)
Minimum installation temperature: −5 °C (thermoplastic) / −25 °C (cross-linked or elastomer) / −40 °C (metallic)

Mechanical

Outer protection / covering: PVC outer sheath — Extruded PVC outer sheath protective layer (continuous layer)
Minimum bending radius: 6 × OD (installed / static routing)
Layer count & geometry: 4 concentric/structural layers verified by cross-section inspection

Resistance

Environmental & chemical durability: Engineered for industrial service in accordance with BT CW1308 / BS 6746
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing product standard: BT CW1308 / BS 6746
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: CW1308
Customs tariff (HS): 8544.49 / 8544.60 / 7614.10

Sizes

12 standard CW1308 cable configurations

Manufactured to BT CW1308 / BS 6746 in single-pair, multi-pair and multi-unit constructions.

Dimensions, construction & weights
Order designation	Configuration	Outer Ø ≈ mm	Weight ≈ kg/km	Min. bend R fixed mm
CW1308 Standard Construction Schedule (150 V · −15…+70 °C)
CW1308 1×2×0.5	1×2×0.5 mm²	6.4	58	52
CW1308 2×2×0.5	2×2×0.5 mm²	9.2	112	74
CW1308 4×2×0.5	4×2×0.5 mm²	11.4	176	92
CW1308 8×2×0.5	8×2×0.5 mm²	14.8	295	118
CW1308 12×2×0.5	12×2×0.5 mm²	17.6	420	141
CW1308 1×2×1.0	1×2×1.0 mm²	7.6	86	61
CW1308 2×2×1.0	2×2×1.0 mm²	11.0	168	88
CW1308 4×2×1.0	4×2×1.0 mm²	13.5	264	108
CW1308 8×2×1.0	8×2×1.0 mm²	17.9	465	143
CW1308 1×2×1.5	1×2×1.5 mm²	8.5	114	68
CW1308 4×2×1.5	4×2×1.5 mm²	15.2	348	122
CW1308 12×2×1.5	12×2×1.5 mm²	23.4	860	187

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Additional pair/triad/quad counts (up to 48 pairs) and blue Ex-i intrinsically safe outer sheaths available per BT CW1308 / BS 6746.

Electrical parameters by conductor cross-section
Conductor size	Max. DC R₂₀ Ω/km	Mutual cap. ≈ nF/km	Inductance ≈ mH/km
0.50 mm² (7/0.30 mm · AWG 20)	39.00	115	0.65
0.75 mm² (7/0.37 mm · AWG 18)	26.00	120	0.62
1.00 mm² (7/0.43 mm · AWG 17)	19.50	125	0.60
1.50 mm² (7/0.53 mm · AWG 16)	13.30	135	0.58
2.50 mm² (7/0.67 mm · AWG 14)	7.98	145	0.55

L/R ratio ≤ 25 µH/Ω (0.5–1.0 mm²) and ≤ 40 µH/Ω (1.5 mm²) for intrinsically safe Ex-i circuits.

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.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
Conductor DC resistance & dimensional verification (BT CW1308 / BS 6746)	DC resistance at 20 °C and geometry within BT CW1308 / BS 6746 class limits	Every manufactured drum / spool
Routine dielectric / spark / structural integrity test (BT CW1308 / BS 6746)	Zero breakdown or structural defect over full production length	Every manufactured drum / spool
Sample tests
Thermal aging, mechanical & material qualification (BT CW1308 / BS 6746)	Full compliance with BT CW1308 / BS 6746 across −15…+70 °C	Type qualification & periodic sample audit

Inspection certificate

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

Product approvals

BT CW1308 CompliantEN 10204 3.1 Routine Test CertificateCE, RoHS 2 (2011/65/EU) & REACH

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX CW1308 <size> BT CW1308 150 V CE

Delivery form: Non-returnable fumigated wooden drums or precision DIN spools
Standard lengths: 500 m · 1000 m · 2000 m drums (custom cut lengths on request)
MOQ: 500 m (stock sizes) · 1000 m (custom production)
Lead time: 2–4 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFCW1308 PVC-Insulated Multipair Internal Telephone & Voice – technical datasheet12 sizes · construction, technical data, approvals XLSXCW1308 spec data (Excel)All 12 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-21
Updated: 2026-10-21

FAQ

Questions engineers ask first

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

What governing standard and construction define CW1308 (CW1308 PVC-Insulated Multipair Internal Telephone & Voice Interconnect Cable)?

CW1308 (CW1308 PVC-Insulated Multipair Internal Telephone & Voice Interconnect Cable) is manufactured in accordance with BT CW1308 / BS 6746 for 150 V service over -15 °C to +70 °C. Its 4-layer construction comprises stranded copper conductor, pvc core insulation, petp separator, pvc outer sheath.

What is the minimum bending radius and installation temperature for CW1308?

The minimum installed bending radius for CW1308 is 6 × OD across its continuous operating temperature range of -15 °C to +70 °C, ensuring mechanical and dielectric stability without conductor or insulation strain.

How are the concentric layers of CW1308 arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Stranded copper conductor (High-conductivity copper conductor per BT CW1308 / BS 6746); (02) PVC core insulation (Extruded PVC dielectric (individual core / group layer)); (03) PETP separator (Helically applied petp separator); (04) PVC outer sheath (Extruded PVC outer sheath protective layer (continuous layer)).

What factory test certificates are supplied with CW1308?

Every production drum or spool of CW1308 undergoes routine conductor DC resistance, dimensional and dielectric/integrity testing per BT CW1308 / BS 6746, and is delivered with an EN 10204 3.1 factory test certificate.

Request a quote

Get an engineering quote for CW1308

Your selection and application details are copied into the enquiry form below.

01Selected sizes

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02Reel & motion

Add your operating conditions here to include them in your enquiry.

Reel typeDrum core diameter (mm)Cable length on drum (m)Travel speed (m/min)Max. accelerationCycles per hourLength and quantityAmbient temperatureExposure (outdoor, water, oil, abrasion)Destination countryEquipment and operating conditions

03Message for our engineers

CW1308 PVC-Insulated Multipair Internal Telephone & Voice Cable

Selected sizes:


Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
- Cable length on drum (m): 
- Travel speed (m/min): 
- Max. acceleration: 
- Cycles per hour: 
- Length and quantity: 
- Ambient temperature: 
- Exposure (outdoor, water, oil, abrasion): 
- Destination country: 
- Equipment and operating conditions:

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