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Product

British Coal MGM 109 / MGM 118 & PN-G-90006 Underground Mining Power CablesMGM 109 Type 3023 · BS 67081.9/3.3 kV · 3-Core UnscreenedDouble Wire Armour (DWA ≥ 75 %)

MGM 109 Type 3023 CableBritish Coal MGM 109 / BS 6708 1.9/3.3 kV 3-core unscreened GP4 EPR DWA mining feeder

MGM 109 Type 3023 Cable is the standard 1.9/3.3 kV unscreened double-wire-armoured (DWA) underground mining feeder cable to British Coal Specification MGM 109 and BS 6708, constructed with three Class 2 tinned copper phase conductors (16 mm² to 185 mm²)

Flame-retardant
EMC screen
Oil-resistant
Water-resistant
Order designation
MGM 109 Type 3023 3C × 50 mm² DWA
Outer Ø ≈
41.0 mm
Copper weight
1,440 kg/km
Total weight ≈
3,950 kg/km
Min. bend R (fixed)
492 mm
All sizes (6)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Specification
MGM 109 Type
3.3 kV · Unscreened (0) · DWA (2) · 3C
Rated voltage
1.9/3.3 kV AC
6.5 kV AC / 5 min dielectric test
Core screening
Unscreened (0)
Collective DWA metallic earth return
Armouring
Double Wire
Counter-helical GSW/Cu (≥ 75 % earth)
Insulation
Type GP4 EPR
90 °C cross-linked rubber BS 7655
Outer sheath
Mining FR-PVC
Heavy-duty flame-retardant Black PVC

Typical values for this cable type, based on British Coal MGM 109 / BS 6708 (Type 3023 1.9/3.3 kV Unscreened DWA) — confirmed in the datasheet and quotation for your order.

Application fit

Is MGM 109 Type 3023 right for your machine?

Engineered for 3.3 kV underground mine shafts, steep drifts, main haulage roadways, and heavy pump/haulage winches where collective DWA armour screening and simplified unscreened 3.3 kV coupler

Fixed installation

Suitable

Double Wire Armour withstands vertical shaft self-weight and heavy rock-fall impacts along main intake and return airways.

Switchgear & control cabinet wiring

Suitable

Unscreened GP4 EPR cores simplify stripping and termination inside compact 3.3 kV BS 6708 coupler boxes.

Immersion & wet locations

Suitable

Extruded PVC bedding and heavy outer PVC sheath protect the DWA against wet shaft conditions.

Energy chain / drag chain

Not suitable

Fixed double-armoured 3.3 kV shaft/roadway cable.

MGM 109 Type 3123
Typical machines3.3 kV underground coal & potash mine roadwaysVertical shaft & incline drift power feedersUnderground booster fans & main stage pumpsMine winder & haulage substation supply

Construction

Layer by layer

Three circular stranded tinned copper conductors (BS EN 60228 Class 2, 16 to 185 mm²), 90 °C Type GP4 EPR insulation, extruded PVC inner

12345
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Stranded tinned copper conductorBS EN 60228 Class 2 circular stranded tinned annealed copper (16 to 185 mm²)MGM 109 / BS EN 60228
2Type GP4 EPR rubber insulation (90 °C)Cross-linked ethylene-propylene elastomer Type GP4 per BS 7655-1.2MGM 109 / BS 7655-1.2
3Extruded PVC inner beddingFlame-retardant extruded PVC inner beddingMGM 109
4Double Wire Armour (DWA ≥ 75 %Two counter-helical layers of galvanized steel wires (+ tinned Cu wires) with separatorMGM 109 / BS 6708
5Mining flame-retardant PVC outer sheathHeavy-duty abrasion- and flame-retardant PVC outer sheath, BlackMGM 109 / BS 7655

MGM 109 Type 3023 Branch Feeders (3C × 16, 25, 35, 50 mm²)

1.9/3.3 kV unscreened DWA feeders for district pumps, haulages, and auxiliary substations.

MGM 109 Type 3023 Trunk Feeders (3C × 70, 95, 120, 150, 185 mm²)

1.9/3.3 kV unscreened DWA main shaft and roadway trunk cables with ≥ 75 % earth conductance.

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on British Coal MGM 109 / BS 6708 (Type 3023 1.9/3.3 kV Unscreened DWA). Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U
1.9/3.3 kV AC (1900/3300 V)
AC dielectric test voltage
6,500 V AC for 5 minutes
Max. conductor operating temp.
+90 °C continuous · +250 °C short-circuit
Metallic armour conductance
≥ 75 % of the conductance of one phase

Thermal

Operating temperature range
-15 °C to +90 °C (fixed installation)
Minimum installation temp.
0 °C

Mechanical

Min. bending radius
12 × overall diameter (D) for DWA mining
Armour construction
Two counter-helical layers of round

Resistance

Flame retardance
BS EN 60332-1-2 & British Coal underground
Water, oil & abrasion
Heavy mining PVC oversheath resists acidic

Reference standards

Primary specification
British Coal Specification MGM 109 (Type
Material standards
BS EN 60228 · BS 7655-1.2 (GP4 EPR) · BS EN

Identification

Core identification
3-Core: Brown, Black, Grey
Outer sheath colour
Black embossed 'MGM 109 TYPE 3023 1900/3300V'

Sizes

6 standard configurations (MGM 109 Type 3023)

Nominal dimensions, copper weights, DC resistance and current ratings for MGM 109 Type 3023 per British Coal MGM 109 / BS 6708 (Type 3023 1.9/3.3 kV

Dimensions & weights
Order designationCores × SizeMain cross-sectionOuter Ø ≈
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard MGM 109 Type 3023 configurations
MGM 109 Type 3023 3C × 25 mm² DWA3 × 25 mm²25.0 mm²34.67202,680415
MGM 109 Type 3023 3C × 50 mm² DWA3 × 50 mm²50.0 mm²41.01,4403,950492
MGM 109 Type 3023 3C × 70 mm² DWA (Cu/GSW)3 × 70 mm²70.0 mm²45.42,1604,980545
MGM 109 Type 3023 3C × 95 mm² DWA (Cu/GSW)3 × 95 mm²95.0 mm²50.22,9806,280602
MGM 109 Type 3023 3C × 120 mm² DWA (Cu/GSW)3 × 120 mm²120.0 mm²54.63,7607,490655
MGM 109 Type 3023 3C × 185 mm² DWA (Cu/GSW)3 × 185 mm²185.0 mm²63.05,79010,420756
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Outer diameters and weights are nominal factory values subject to ±5 % manufacturing tolerance per British Coal MGM 109 / BS 6708 (Type 3023 1.9/3.3 kV Unscreened DWA).

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
6.5 kV AC dielectric & insulation resistance6,500 V AC for 5 min per MGM 109 / BS 6708100 % of drums
Phase & DWA armour DC resistance ratioDWA conductance ≥ 75 % of one phase conductor100 % of drums
Sample tests
GP4 EPR hot-set & galvanizing coat weightBS 7655-1.2 EPR & BS EN 10257-1 wire checksPer production batch
Underground mining flame & impact testPass MGM 109 / BS 6708 mechanical and flame qualificationType approval

Inspection certificate

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

Product approvals

British Coal MGM 109 Type 3023BS 6708CE / UKCA

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX MGM 109 TYPE 3023 1900/3300V
Delivery form
Non-returnable timber drums or heavy export
Standard drum lengths
250 m · 500 m · 1000 m · custom cut lengths
MOQ
100 m (stock variants) · 500 m (custom)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFMGM 109 Type 3023 Cable – technical datasheet6 sizes · construction, technical data, approvalsXLSXMGM 109 Type 3023 spec data (Excel)All 6 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.

How does MGM 109 Type 3023 differ from Type 3123?
Both are 1.9/3.3 kV 3-core double-wire-armoured (DWA) mining feeder cables. Type 3023 has unscreened ('0') GP4 EPR insulated cores with collective earth screening provided by the DWA armour, whereas Type 3123 adds an individual helically lapped copper tape screen ('1') over each phase core.
Why does Type 3023 have a smaller outside diameter and lighter weight than Type 3123?
Omitting the individual copper tape phase screens and core-screen bedding tapes reduces the laid-up diameter by approximately 2 to 2.5 mm, allowing easier entry into standard 3.3 kV BS 6708 bolted cable couplers. Each production drum undergoes 100 % conductor DC resistance verification, insulation
How is the ≥ 75 % earth conductance requirement satisfied on Type 3023?
On cross-sections up to 50 mm², the cross-sectional area of the two galvanized steel wire armour layers naturally exceeds 75 % of one copper phase conductor. On 70 mm² to 185 mm² cables, tinned copper wires are substituted into the inner armour layer to guarantee ≥ 75 % conductance.
When should I choose Type 3023 (DWA) over Type 3013 (SWA)?
Choose Type 3023 (DWA) for vertical shaft drops, steep inclines, and dynamic longwall gate roads where rock-fall crush and tensile suspension forces occur. Choose Type 3013 (SWA) for permanent horizontal roadways and surface colliery substations. Each production drum undergoes 100 % conductor DC resistance

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MGM 109 Type 3023 Cable

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