Factory-Direct Supply of Certified Wires and Conductors for Diverse Industrial Applications
NMY NYM-J NYM-O Cable 300/500V PVC Insulation PVC sheath Industrial Cable
Conductor: Bare copper, solid Class 1 (RE) & stranded Class 2 (RM)
Insulation: PVC TI1 compound, VDE 0281 / HD 21.1 S4
Sheath: PVC TM1 compound, grey RAL 7035, flame retardant
Filler: Non-vulcanised rubber/plastic wrap — damp/wet rated
Temperature: 70°C continuous, 160°C/5s short-circuit, -40°C fixed
Standard: DIN VDE 0250-204, IEC 60332-1, CE Low Voltage Directive
Product Overview
NMY / NYM-J / NYM-O Cable is a 300/500V PVC-insulated PVC-sheathed copper installation cable manufactured to the German standard DIN VDE 0250-204. It is the standard European household and industrial building wire — commonly referred to simply as "NYM cable" in the trade. Construction: bare copper conductor (solid Class 1 RE or stranded Class 2 RM per IEC 60228 / HD 383), PVC insulation compound TI1, filler wrapping of non-vulcanised rubber or plastic compound, and a grey (RAL 7035) PVC outer sheath compound TM1. The three designation variants clarify the earthing arrangement: NYM is the generic type, NYM-J includes a green/yellow earth conductor, and NYM-O is without earth conductor. The semi-waterproof filler wrapping between cores and sheath gives NMY its distinctive round profile and allows installation in damp and wet environments — a key advantage over standard PVC/PVC cables that lack this moisture barrier.
NMY cable is designed for fixed installation on or under plaster, in walls, in concrete (but not dry or pre-stressed concrete), and in masonry. It can be used in dry, damp, and wet indoor environments, and outdoors only when protected from direct sunlight — the PVC sheath is not UV-stabilised. The flame-retardant PVC construction meets IEC 60332-1 / EN 50265-2-1 single-cable vertical flame test, making it suitable for building installations where fire propagation risk must be controlled. Unlike armoured cables which provide mechanical protection, NMY relies on its installation environment (plaster, conduit, walls) for physical protection — it must not be directly buried or exposed to mechanical stress. The 70°C continuous operating temperature with 160°C short-circuit rating makes NMY suitable for all standard household and light industrial fixed wiring at 300/500V.
NMY sits at the centre of the European installation cable family: less expensive than armoured cables (NA2XBY, NYBY) but more robust than plain PVC/PVC twin-and-earth. The 4×D bending radius for multi-core (3+ cores) — dramatically tighter than the 12×D typical of armoured cables — makes NMY the preferred choice for residential wiring where cables must navigate wall cavities, floor voids, and tight junction boxes. The grey RAL 7035 sheath provides a clean, professional appearance for visible installation in basements, garages, and utility rooms, and is standardised across VDE-compliant European building practice.
Solid (RE) & Stranded (RM) Copper
Class 1 solid (RE) for fixed wiring with screw terminals, 1.5-10mm². Class 2 stranded (RM) for flexible routing, 1.5-35mm² per IEC 60228 / HD 383.
PVC Insulation TI1 + PVC Sheath TM1
Coloured PVC core insulation compound TI1. Grey RAL 7035 PVC outer sheath compound TM1. Flame retardant per IEC 60332-1.
Filler Wrap Moisture Barrier
Non-vulcanised rubber or plastic filler wrapping between cores and sheath. Provides semi-waterproofing for damp and wet environment use — unlike standard PVC/PVC.
NYM-J vs NYM-O Variants
NYM-J: with green/yellow earth conductor. NYM-O: without earth conductor. Both available in 1-5 core configurations, 1.5-35mm².
300/500V Building Wire
Rated at 300/500V (U₀ = 300V, U = 500V). 70°C continuous, 160°C/5s short-circuit. -40°C to +70°C fixed, -5°C to +70°C flexible installation.
Tight 4×D Bending Radius
Multi-core (3+ cores): 4×D bending. Single-core: 15×D. Significantly tighter than armoured cables (12×D) — ideal for wall cavities and junction boxes.
Technical Characteristics
| Rated Voltage U₀/U | 300/500V |
| Max. Conductor Temperature | +70°C (continuous) |
| Max. Short-Circuit Temperature | +160°C (max 5 seconds) |
| Operating Temperature (Flexible) | -5°C to +70°C |
| Operating Temperature (Fixed) | -40°C to +70°C |
| Min. Bending Radius — 1 core | 15 × overall diameter |
| Min. Bending Radius — 3+ cores | 4 × overall diameter |
| Conductor Types | Class 1 solid (RE) & Class 2 stranded (RM), bare copper |
Applicable Standards
| Standard | Scope |
|---|---|
| DIN VDE 0250-204 | German national standard for PVC-insulated PVC-sheathed installation cables 300/500V. Primary standard for NYM/NYM-J/NYM-O nomenclature and construction. |
| VDE 0482-332-1-2 / IEC 60332-1 | Single cable vertical flame test. Mandatory for building installation cables per European Low Voltage Directives. |
| IEC 60228 / HD 383 / DIN VDE 0295 | Conductor standards governing bare copper solid (Class 1 RE) and stranded (Class 2 RM) conductors. |
| DIN VDE 0281 Part 1 / HD 21.1 S4 | PVC insulation and sheath compound specifications: TI1 (core) and TM1 (sheath) compounds. |
| CE Low Voltage Directive 73/23/EEC & 93/68/EEC | CE marking under European Low Voltage Directive — mandatory for sale in EU member states. |
European Installation Cable Family
| Designation | Voltage | Construction | Bending | Use |
|---|---|---|---|---|
| NMY (NYM-J/O) | 300/500V | Cu/PVC/Filler/PVC | 4×D (3+ core) | Indoor plaster/wall/concrete, damp locations |
| NYBY | 0.6/1kV | Cu/PVC/STA/PVC | 12×D | Direct burial, armoured underground |
| NYM (Swiss) | 300/500V | Cu/PVC/PVC | 4×D | Dry indoor spaces only (no filler wrap) |
| H07V-U/R/K | 450/750V | Cu/PVC single core | 15×D | Panel wiring, equipment leads |
Technical Specifications
Copper conductors per IEC 60228: solid Class 1 (RE) for ≤10mm², stranded Class 2 (RM) available up to 35mm². PVC insulation TI1, sheath TM1, grey RAL 7035. Filler wrapping between cores and sheath. 27 variants from 1.5mm² to 35mm² across 1-5 cores.
| Cross Section (No. × mm²) | Outer Dia. (mm) | Cu Weight (kg/km) | Cable Weight (kg/km) |
|---|---|---|---|
| 1-Core | |||
| 1 × 1.5 | 5.1 | 14.4 | 40 |
| 1 × 2.5 | 5.7 | 24 | 65 |
| 1 × 4 | 6.3 | 38 | 80 |
| 1 × 6 | 6.8 | 58 | 105 |
| 1 × 10 | 8.0 | 96 | 155 |
| 1 × 16 | 9.1 | 154 | 230 |
| 2-Core | |||
| 2 × 1.5 | 8.8 | 29 | 115 |
| 2 × 2.5 | 10.0 | 48 | 145 |
| 3-Core | |||
| 3 × 1.5 | 8.5 | 43 | 120 |
| 3 × 2.5 | 9.9 | 72 | 165 |
| 3 × 4 | 10.8 | 115 | 265 |
| 3 × 6 | 12.2 | 173 | 315 |
| 4-Core | |||
| 4 × 1.5 | 9.3 | 58 | 145 |
| 4 × 2.5 | 10.7 | 96 | 205 |
| 4 × 4 | 12.8 | 154 | 305 |
| 4 × 6 | 13.8 | 230 | 385 |
| 4 × 10 | 16.8 | 384 | 605 |
| 4 × 16 | 19.2 | 614 | 1,025 |
| 4 × 25 | 24.0 | 960 | 1,580 |
| 4 × 35 | 26.0 | 1,344 | 2,075 |
| 5-Core | |||
| 5 × 1.5 | 10.2 | 72 | 170 |
| 5 × 2.5 | 11.7 | 120 | 245 |
| 5 × 4 | 13.9 | 192 | 370 |
| 5 × 6 | 15.1 | 288 | 460 |
| 5 × 10 | 18.3 | 480 | 740 |
| 5 × 16 | 23.6 | 768* | 1,275 |
| 5 × 25 | 28.5 | 1,200 | 1,945 |
Packaging & Delivery
| Parameter | Standard |
|---|---|
| Drum Type | Wooden drum / plastic spool / corrugated box (small sizes 1.5-4mm²) |
| Length per Drum | 100m/500m/1000m standard; custom lengths on request |
| Drum Marking | Manufacturer, NYM type, voltage, cross-section, core count, length, weight, drum number, CE/VDE marks |
| Cable End Sealing | Heat-shrink end caps to prevent moisture ingress |
| Outer Protection | Weatherproof wrapping for sea freight |
| Delivery Condition | Factory-new, tested per DIN VDE 0250, CE marked, test certificate on request |
Typical Applications
NMY cable is the workhorse of European building installation — from apartment wiring to factory lighting, the grey RAL 7035 cable is the instantly recognisable standard installation cable across the continent:
Household Wiring
Standard installation cable for residential lighting, socket, and appliance circuits. Laid under plaster, in walls, or in concrete per VDE 0100.
Industrial Installation
Fixed wiring in factories, workshops, and commercial buildings. 4×D bending radius allows routing through conduit and cable trays.
Damp & Wet Locations
Semi-waterproof filler wrapping enables installation in damp basements, wet rooms, and outdoor protected locations — a key differentiator from standard PVC/PVC.
Masonry & Concrete
Laid in masonry walls, under plaster, and in concrete (not dry or pre-stressed concrete). No additional mechanical protection required when properly installed.
EU / VDE Markets
CE marked under Low Voltage Directive. VDE 0250 certified for all EU member states. RAL 7035 grey sheath is the standardised colour across Europe.
Control & Signal Circuits
300/500V rated for control, signal, and low-voltage power circuits. 1.5mm² minimum — suitable for lighting, bell, and thermostat wiring.
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Frequently Asked Questions
As a factory, we offer flexible MOQ depending on the cable type. For standard stock items, MOQ is low; for customized specifications, please contact our sales team for a detailed quote.
Yes, Qiangli cables are manufactured in compliance with international standards such as UL, CE, TUV, and VDE. We provide full test reports and certificates upon request.
Absolutely. We have a dedicated R&D team that can customize cable structure, material, color, and printing to meet your specific project needs.
For standard products, lead time is usually 7-15 days. For large-scale project orders or customized products, it typically ranges from 20 to 30 days.
Yes, we provide free samples for most standard cables. You only need to cover the international courier costs. Contact us to arrange your sample shipment.