Application & Operating Conditions
Type G Flat 600–2,000 V portable mining cable is purpose-built for DC underground shuttle cars, roof bolters, face drills, and mobile reel-fed DC haulage machines that require a dedicated low-impedance metallic equipment grounding conductor separate from the DC negative return conductor. Positioning the stranded tinned copper ground conductor along the center web between the Black and White EPR power cores preserves ultra-compact flat spooling while meeting ICEA S-75-381 / MSHA grounding area rules.
Grounded DC Shuttle-Car Reels
Provides an independent metallic frame-grounding path (≥50% circular-mil area of one power core) without sacrificing level-wind drum capacity in low-seam underground mines.
Balanced Center-Web Ground Placement
Centering the flexible tinned copper ground wire between the two insulated power cores shields it from edge rib-scrape damage and distributes reel tension evenly.
Mold-Cured Two-Layer Reinforced CPE
Vulcanized extra-heavy-duty CPE with embedded synthetic fiber reinforcement resists corkscrewing, splice pull-out, hydraulic oil, coal slurry, and wheel run-over.
Engineering Specification Note: Unlike ungrounded Type W Flat 2/C, true ICEA S-75-381 Type G Flat 2/C incorporates a dedicated central tinned copper ground core, widening major flat dimension (W) by 0.08–0.26 in to accommodate the central ground web.
Cable Construction (ICEA S-75-381 Type G Flat 2/C + Ground)
Symmetrical three-element parallel flat assembly combining two 90°C EPR power conductors and one central flexible tinned copper equipment grounding conductor inside a fiber-reinforced mold-cured CPE sheath.
| Layer / Component | Material & ICEA S-75-381 / NEMA WC 58 Engineering Specification |
|---|---|
| 1. Power Conductors (2×) | Two flexible rope-lay stranded annealed tinned copper power conductors (133/7×19 up to 532/19×28 strands, 8 AWG to 4/0 AWG) per ASTM B172 and ASTM B33. |
| 2. 90°C EPR Power Insulation | Heat-, moisture-, and ozone-resistant Ethylene Propylene Rubber (EPR), color-coded Black and White: 0.060 in (1.52 mm) wall for 8–2 AWG; 0.080 in (2.03 mm) wall for 1–4/0 AWG. |
| 3. Center Grounding Conductor (1×) | Flexible stranded annealed tinned copper grounding conductor (10 AWG to 1/0 AWG, sized ≥50% of one phase conductor per ICEA S-75-381) centered in the elastomeric web between the two power cores. |
| 4. Synthetic Yarn Reinforcement | High-tenacity reinforcing fiber layer applied between the inner and outer jacket passes to lock core spacing and resist tear propagation under high reel pull. |
| 5. Mold-Cured Flat CPE Jacket | Extra-heavy-duty black thermosetting Chlorinated Polyethylene (CPE) outer sheath (optional CSP, PCP/Neoprene, or high-visibility colored compounds available). |
Type G Flat 2000V cutaway: Left (Black) and Right (White) 90°C EPR power cores flanking a centered stranded tinned copper equipment grounding conductor inside a reinforced flat CPE jacket.
Technical Characteristics
Electrical, thermal, grounding, and dimensional specifications for Type G Flat 600–2,000 V mining service.
| Parameter | ICEA S-75-381 / NEMA WC 58 Rated Value |
|---|---|
| Rated Voltage | 600 V to 2,000 V DC or single-phase AC mobile mining service |
| Configuration | Flat parallel 2 insulated power conductors (Black, White) + 1 centered grounding conductor |
| Grounding Conductor Sizing | 10 AWG (on #8) through 1/0 AWG (on 4/0), ≥50% circular-mil cross-section of one power conductor |
| Maximum Conductor Temperature | +90°C continuous operation | +250°C short-circuit rating |
| Minimum Bending Radius | 6 × minor flat cable thickness (H) across shuttle-car sheaves and drums |
| Standards & Flame Reference | ICEA S-75-381 / NEMA WC 58; ASTM B172 & ASTM B33; CAN/CSA-C22.2 No. 96; MSHA flame-resistant reference |
Type G Flat 2/C + Ground Dimensions, Grounding & Ampacity (8 AWG to 4/0 AWG)
Complete ICEA S-75-381 dual-unit dimensional, central grounding gauge, weight, and +90°C continuous ampacity specifications.
Table 1: Type G Flat 2-Conductor + Center Ground — 600–2000 V Reinforced Black CPE (8 AWG to 4/0 AWG)
| Power Cores | Area (mm²) | Power Strands | Center Ground (Strands) | EPR Wall (in / mm) | Nominal H × W (in) | Nominal H × W (mm) | Weight (lb/kft / kg/km) | Ampacity 40°C (A) |
|---|---|---|---|---|---|---|---|---|
| 2 × 8 AWG | 8.37 | 133 (7×19) | 1 × 10 AWG (49) | 0.060 / 1.52 | 0.51 × 0.92 | 13.0 × 23.4 | 390 / 580 | 72 |
| 2 × 6 AWG | 13.30 | 133 (7×19) | 1 × 8 AWG (133) | 0.060 / 1.52 | 0.56 × 1.02 | 14.2 × 25.9 | 505 / 751 | 95 |
| 2 × 4 AWG | 21.15 | 259 (7×37) | 1 × 7 AWG (133) | 0.060 / 1.52 | 0.61 × 1.15 | 15.5 × 29.2 | 665 / 990 | 127 |
| 2 × 2 AWG | 33.62 | 259 (7×37) | 1 × 5 AWG (133) | 0.060 / 1.52 | 0.73 × 1.35 | 18.5 × 34.3 | 960 / 1,429 | 167 |
| 2 × 1 AWG | 42.41 | 259 (7×37) | 1 × 4 AWG (259) | 0.080 / 2.03 | 0.81 × 1.55 | 20.6 × 39.4 | 1,215 / 1,808 | 191 |
| 2 × 1/0 AWG | 53.49 | 259 (7×37) | 1 × 3 AWG (259) | 0.080 / 2.03 | 0.93 × 1.67 | 23.6 × 42.4 | 1,485 / 2,210 | 217 |
| 2 × 2/0 AWG | 67.43 | 329 (7×47) | 1 × 2 AWG (259) | 0.080 / 2.03 | 0.99 × 1.85 | 25.1 × 47.0 | 1,815 / 2,701 | 250 |
| 2 × 3/0 AWG | 85.01 | 418 (19×22) | 1 × 1 AWG (259) | 0.080 / 2.03 | 1.03 × 2.00 | 26.2 × 50.8 | 2,190 / 3,259 | 287 |
| 2 × 4/0 AWG | 107.2 | 532 (19×28) | 1 × 1/0 (266) | 0.080 / 2.03 | 1.10 × 2.15 | 27.9 × 54.6 | 2,630 / 3,914 | 328 |
Type G Flat vs. Related Shuttle-Car & Trailing Cables
Compare Type G Flat 2/C against ungrounded Type W Flat, round Type G-GC, and stationary Type MP-GC.
| Mining Cable Model | Voltage Class, Ground / Shield Architecture & Primary Mining Duty |
|---|---|
| Type W Round 2kV (3C & 4C) | Round unshielded portable power cable (no bare ground wires) with 3 or 4 flexible tinned copper EPR cores inside a reinforced black or luminous CPE jacket. |
| Type W Flat 2kV (2C & 4C) | Low-profile parallel flat unshielded cable (2-core DC or 4-core AC, no bare grounds) engineered for tight multi-layer shuttle-car and roof-bolter reels. |
| Type G Flat 2kV (2C + Ground) | Parallel flat DC shuttle-car cable adding a centered stranded tinned copper equipment grounding conductor between the two 90°C EPR power cores. |
| Type G-GC Round 2kV (3C + 2G + GC) | Round unshielded 3-phase portable mining cable with 2 interstitial bare tinned copper grounds and 1 yellow PP ground-check pilot conductor. |
| Type MP-GC Feeder (2kV–15kV) | Stationary 3-core mine power feeder cable (Class B bare copper, copper-tape phase screens, 2 grounds + GC, EPR/CPE or XLPE/PVC) for shafts, boreholes, and trays. |
Frequently Asked Questions (FAQ)
Technical FAQs on Type G Flat grounding sizing, splicing, and reel tension.
Why is the center ground wire in Type G Flat sized 2 to 3 AWG numbers smaller than the power cores?
Per ICEA S-75-381 and MSHA 30 CFR Part 75, the equipment grounding conductor in a two-power-conductor mining cable must have a cross-sectional area of at least 50% of one power conductor (for example, 1 × 2 AWG ground = 66,360 cmil alongside 2 × 2/0 AWG power = 133,100 cmil, providing exactly 49.9–50%+ conductance).
Does Type G Flat 2kV include a Ground-Check (GC) pilot wire?
No. Standard Type G Flat contains two insulated power cores plus equipment grounding only. Where three-phase power plus continuous ground-check monitoring is required, mines specify round Type G-GC or shielded Type SHD-GC.
What splice kits work with TEBAOFLEX Type G Flat CPE shuttle-car cable?
Our mold-cured CPE compound bonds reliably with all industry-standard cold-vulcanizing and heat-shrink flat mining cable splice boots and wraparound flame-resistant repair sleeves.
Request a Type G Flat 2kV (2C + Ground) Cable Quote
Provide your shuttle-car gauge (8 AWG to 4/0 AWG), CPE or Neoprene jacket requirement, and exact reel cut footage for factory-direct quotation.
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