TEBAOFLEX H07RN8-F 450/750 V is a heavy-duty harmonized flexible submersible rubber cable built to EN 50525-2-21 (Annex E) for AD8 permanent freshwater immersion up to 10 m depth (1 bar) and +40°C water temperature. Combining EN 60228 Class 5 copper conductors, cross-linked EI4 EPR core insulation, and a low-water-uptake EM2 polychloroprene outer sheath, it delivers reliable power and float-switch control for submersible drainage pumps, construction dewatering sumps, fountains, and municipal wet wells.
1. Application Boundaries & H07RN8-F vs. H07RN-F Selection Matrix
In European harmonized nomenclature, the numeral 8 in H07RN8-F specifically designates an elastomeric jacket formulated for low moisture permeation under continuous hydrostatic immersion (AD8), distinguishing it sharply from ordinary splash-resistant jobsite rubber cables:
- Submersible Drainage & Construction Dewatering Pumps: Motor drop leads and float-level switch cables suspended in freshwater sumps, excavation pits, storm-water retention basins, and quarry drainage wells up to
10 mimmersion depth. - Architectural Fountains, Pools & Irrigation Intakes: Underwater luminaire, aerator, and circulation pump connections within documented
+40°Cfreshwater limits using IP68 compression glands or resin-potted splices. - Wet Industrial Processing Floors: Washdown machinery, flooded tunnel sumps, and damp plant trenches where cables transition between free air (
-25°Cto+60°Cflexing) and standing water.
| Cable Series | Water Exposure Class | Sheath Compound | Permitted Immersion & Fluid Scope |
|---|---|---|---|
| H07RN8-F 450/750 V (This Page) | AD8 (Permanent Submersion) | Low-uptake EM2 PCP rubber | Freshwater / clean drainage up to 10 m depth & +40°C water |
| H07RN-F 450/750 V | AD6 (Waves / Water Jets) | Standard EM2 PCP rubber | Outdoor rain & washdown only; not for permanent underwater immersion |
| H07BQ-F Aquaculture PUR | Seawater / Fish-Farm Duty | Hydrolysis-resistant PUR | Brackish/coastal aquaculture cages, abrasion & bio-fouling duty |
| Screened Subsea PUR Cable | Deep Subsea / ROV Duty | Marine polyether PUR | Deepwater sensors, ROV tethers & EMI-shielded subsea instrumentation |
Important Application Boundary: Standard EN 50525-2-21 H07RN8-F is not certified for potable drinking-water contact (which requires food-grade EPDM compounds), explosive ATEX zones, or aggressive chemical/raw-sewage lagoons and deep subsea pressures above 10 m unless project-specific compound and IP68 termination test records are verified with TEBAOFLEX prior to ordering.
2. Five-Layer Cable Construction (Matched to Cross-Section Diagram)
Aligned directly with our five-callout technical drawing and factory cross-sections (1C through 12G), H07RN8-F blocks longitudinal and radial moisture ingress through a tight, void-minimized circular construction:
G on 7G-12G pump control leads).7G, 12G, and heavy 3G/4G sizes), allowing clean outer jacket stripping without nicking EI4 core insulation.3. Technical Characteristics
Electrical, immersion, and mechanical parameters per EN 50525-2-21 and EN 50565-2:
| Parameter | Engineering Specification / Operating Limit |
|---|---|
| Harmonized Designation | H07RN8-F (EN 50525-2-21 / HD 22.4 / CEI 20-19 Part 16) |
| Rated Voltage (U0/U) | 450/750 V (up to 600/1000 V in protected fixed conduit/motor installations) |
| AC Test Voltage | 2,500 V AC / 5 min routine dielectric test |
| AD8 Submersion Limits | Max 10 m freshwater depth (0.1 MPa / 1 bar); max water temperature +40°C |
| Ambient Air Temperature | -25°C to +60°C mobile/flexing | -40°C to +60°C fixed installation |
| Conductor Temp & Short-Circuit | +60°C in AD8 water (+85°C in dry air); +200°C max short-circuit (5 s) |
| Minimum Bending Radius | 4 × OD fixed routing | 6 × OD free flexing & pump retrieval |
| Max Tensile Load on Copper | 15 N/mm² dynamic / 50 N/mm² static (use stainless support grip on deep sumps) |
| Flame & Oil Resistance | Flame retardant per IEC 60332-1-2; oil-resistant sheath per EN 60811-404 |
4. Dimensional & Resistance Schedules (1-Core, 3G, 4G & Multi-Core)
Indicative manufacturing dimensions and maximum 20°C conductor DC resistances per EN 60228 Class 5 (confirm exact gland OD tolerance on your quotation):
4.1 Single-Core H07RN8-F (1 × 1.5 mm² to 1 × 300 mm²)
| Part Code | Cross-Section (mm²) | Conductor Dia. (mm) | Outer Dia. Min (mm) | Outer Dia. Max (mm) | Approx. Weight (kg/km) | Max DC Resistance at 20°C (Ω/km) |
|---|---|---|---|---|---|---|
H07RN8F-1X1.5 | 1 × 1.5 | 1.6 | 5.7 | 7.1 | 58 | 13.3 |
H07RN8F-1X2.5 | 1 × 2.5 | 2.0 | 6.3 | 7.9 | 71 | 7.98 |
H07RN8F-1X4 | 1 × 4 | 2.6 | 7.2 | 9.0 | 100 | 4.95 |
H07RN8F-1X6 | 1 × 6 | 3.4 | 7.9 | 9.8 | 130 | 3.30 |
H07RN8F-1X10 | 1 × 10 | 4.4 | 9.5 | 11.9 | 230 | 1.91 |
H07RN8F-1X16 | 1 × 16 | 5.7 | 10.8 | 13.4 | 290 | 1.21 |
H07RN8F-1X25 | 1 × 25 | 6.9 | 12.7 | 15.8 | 420 | 0.780 |
H07RN8F-1X35 | 1 × 35 | 8.1 | 14.3 | 17.9 | 530 | 0.554 |
H07RN8F-1X50 | 1 × 50 | 9.8 | 16.5 | 20.6 | 750 | 0.386 |
H07RN8F-1X70 | 1 × 70 | 11.6 | 18.6 | 23.3 | 960 | 0.272 |
H07RN8F-1X95 | 1 × 95 | 13.3 | 20.8 | 26.0 | 1,250 | 0.206 |
H07RN8F-1X120 | 1 × 120 | 15.1 | 22.8 | 28.6 | 1,560 | 0.161 |
H07RN8F-1X150 | 1 × 150 | 16.8 | 25.2 | 31.4 | 1,900 | 0.129 |
H07RN8F-1X185 | 1 × 185 | 18.6 | 27.6 | 34.4 | 2,300 | 0.106 |
H07RN8F-1X240 | 1 × 240 | 21.4 | 30.6 | 38.3 | 2,950 | 0.0801 |
H07RN8F-1X300 | 1 × 300 | 23.9 | 33.5 | 41.9 | 3,600 | 0.0641 |
4.2 Three-Core 3G Sizes with Green/Yellow Earth (3G1.5 mm² to 3G300 mm²)
| Part Code | Cross-Section (mm²) | Conductor Dia. (mm) | Outer Dia. Min (mm) | Outer Dia. Max (mm) | Approx. Weight (kg/km) | Max DC Resistance at 20°C (Ω/km) |
|---|---|---|---|---|---|---|
H07RN8F-3G1.5 | 3G1.5 | 1.6 | 9.2 | 11.9 | 165 | 13.3 |
H07RN8F-3G2.5 | 3G2.5 | 2.0 | 10.9 | 14.0 | 235 | 7.98 |
H07RN8F-3G4 | 3G4 | 2.6 | 12.7 | 16.2 | 320 | 4.95 |
H07RN8F-3G6 | 3G6 | 3.4 | 14.1 | 18.0 | 420 | 3.30 |
H07RN8F-3G10 | 3G10 | 4.4 | 19.1 | 24.2 | 810 | 1.91 |
H07RN8F-3G16 | 3G16 | 5.7 | 21.8 | 27.6 | 1,050 | 1.21 |
H07RN8F-3G25 | 3G25 | 6.9 | 26.1 | 33.0 | 1,250 | 0.780 |
H07RN8F-3G35 | 3G35 | 8.1 | 29.3 | 37.1 | 1,900 | 0.554 |
H07RN8F-3G50 | 3G50 | 9.8 | 34.1 | 42.9 | 2,600 | 0.386 |
H07RN8F-3G70 | 3G70 | 11.6 | 38.4 | 48.3 | 3,400 | 0.272 |
H07RN8F-3G95 | 3G95 | 13.3 | 43.3 | 54.0 | 4,450 | 0.206 |
H07RN8F-3G120 | 3G120 | 15.1 | 47.4 | 60.0 | 5,180 | 0.161 |
H07RN8F-3G150 | 3G150 | 16.8 | 52.0 | 66.0 | 6,500 | 0.129 |
H07RN8F-3G185 | 3G185 | 18.6 | 57.0 | 72.0 | 7,860 | 0.106 |
H07RN8F-3G240 | 3G240 | 21.4 | 65.0 | 82.0 | 10,224 | 0.0801 |
H07RN8F-3G300 | 3G300 | 23.9 | 72.0 | 90.0 | 12,620 | 0.0641 |
4.3 Popular 4G Three-Phase Motor & 7G-12G Pump Control Sizes
| Part Code | Configuration (mm²) | Outer Dia. Min – Max (mm) | Approx. Weight (kg/km) | Primary Submersible Pump Duty |
|---|---|---|---|---|
H07RN8F-4G1.5 | 4G1.5 | 10.2 – 13.1 | 205 | 3-phase fractional/small sump pumps (3L + PE) |
H07RN8F-4G2.5 | 4G2.5 | 12.1 – 15.5 | 290 | 3-phase dewatering & fountain pumps |
H07RN8F-4G4 | 4G4 | 14.0 – 17.9 | 415 | 3-phase industrial drainage pumps |
H07RN8F-4G6 | 4G6 | 15.7 – 20.0 | 545 | Medium-head 400 V submersible pumps |
H07RN8F-4G10 | 4G10 | 20.9 – 26.5 | 980 | Heavy dewatering & slurry agitator feeders |
H07RN8F-4G16 | 4G16 | 23.8 – 30.1 | 1,340 | High-flow construction quarry pumps |
H07RN8F-4G25 | 4G25 | 28.9 – 36.6 | 2,040 | Main station wet-well submersible motors |
H07RN8F-4G35 | 4G35 | 32.5 – 41.1 | 2,680 | High-power 400/690 V drainage pumps |
H07RN8F-4G50 | 4G50 | 37.7 – 47.5 | 3,690 | Large flood-control submersible pumps |
H07RN8F-7G1.5 | 7G1.5 | 14.2 – 18.1 | 395 | Float switches, seal-leak & klixon thermal sensors |
H07RN8F-12G1.5 | 12G1.5 | 17.6 – 22.4 | 610 | Multi-sensor pump monitoring & valve manifolds |
H07RN8F-12G2.5 | 12G2.5 | 20.6 – 26.2 | 890 | Heavy multi-circuit wet-well control leads |
Compare broader harmonized round rubber options in our H07 Round Rubber Cable Family (H07RN-F, H07BN4-F, H07RN8-F) or browse all Rubber & Flexible Cables.
5. Frequently Asked Questions
What does the ‘8’ in H07RN8-F mean compared with standard H07RN-F?
In harmonized European CENELEC coding (EN 50525-2-21), RN8 designates a special low-water-absorption polychloroprene rubber sheath qualified for AD8 permanent freshwater submersion down to 10 m depth at water temperatures up to +40°C. Ordinary H07RN-F is rated only for AD6 (waves/water jets) and will suffer insulation resistance drop and jacket swelling if permanently submerged.
Can standard H07RN8-F be used in potable drinking-water boreholes or deep subsea wells beyond 10 m?
No. Standard EN 50525-2-21 H07RN8-F polychloroprene rubber is engineered for non-potable freshwater sumps, dewatering pumps, fountains, and municipal drainage up to 10 m depth. It is not approved for potable drinking water (which requires food-grade EPDM/EPR per KTW/WRAS/ACS) nor for deep-well hydrostatic pressures (> 10 m) without project-specific PUR or special compound qualification.
Why is maximum water temperature limited to +40°C on AD8 H07RN8-F pump installations?
Water permeation rate through elastomeric sheaths increases exponentially with temperature. EN 50525-2-21 Annex E caps continuous AD8 immersion at +40°C water temperature (and 10 m hydrostatic head) to maintain long-term EI4 insulation resistance and prevent osmotic blistering across a multi-year submersible pump service life.
Are multi-core H07RN8-F builds available for combined pump power, thermal klixon, and float switches?
Yes. Alongside 1-core (1.5-300 mm²) and 3G/4G motor feeder cables, TEBAOFLEX manufactures 7G1.5, 12G1.5, and 12G2.5 H07RN8-F cables (as shown in our factory cross-section) as well as composite power + thermistor control leads for OEM submersible pumps and mixers.
Request an H07RN8-F Submersible Pump Cable Quotation
Send your core count (1C, 2C, 3G, 4G, or 7G-12G), cross-section, immersion depth, water temperature/chemistry, IP68 gland range, and drum/cut length for factory pricing.
