Underground cable NYY-J 6 mm²
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Content: 50 Meter (€4.97* / 1 Meter)
Content: 25 Meter (€5.31* / 1 Meter)
Content: 40 Meter (€5.31* / 1 Meter)
Content: 100 Meter (€5.31* / 1 Meter)
Content: 100 Meter (€1.33* / 1 Meter)
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NYY-J 5x6 mm² Underground Cable – Heavy-Duty Power Cable for Professional Medium-Load Applications
Looking for reliable NYY-J 5x6 mm² or 5x6 mm² underground cable for construction sites, machine connections, commercial buildings, or stable power supply? At ekabel24, electrical contractors, construction companies, renovation firms, research institutions, and B2B buyers from Germany, Netherlands, Austria, Belgium, Switzerland, and France receive high-quality NYY-J heavy-duty cable – sold by the metre, in 25 m / 50 m / 100 m coils, or in large quantities at attractive wholesale prices.
Why NYY-J 5x6 mm² is the Ideal Medium-Cross-Section Underground Cable for Professionals
The NYY-J 5x6 mm² (5-core, 5G6 or 5 × 6 mm² underground cable) offers the perfect balance between flexibility and performance for permanent underground power distribution. It is excellently suited for:
- Domestic and commercial main connections, sub-distributions, and meter cabinets
- Construction site power supply for medium consumers (cranes, mixers, containers, site lighting)
- Machine and equipment connections in workshops, production halls, and laboratories
- Research facilities and test benches with constant load
- Renovations, garages, garden installations, charging stations, or smaller PV systems
- Direct burial in soil, concrete, water, or outdoors (no additional protection required per VDE)
Technical Specifications – NYY-J 5x6 mm² Underground Cable
| Property | Value |
|---|---|
| Number of cores & cross-section | 5 x 6 mm² (5G6) |
| Conductor material | Copper (Cu), solid, Class 1 |
| Insulation & sheath | PVC, black, flame-retardant |
| Rated voltage | U₀/U 0.6/1 kV |
| Test voltage | 4 kV |
| Operating temperature (fixed installation) | -40 °C to +70 °C |
| Operating temperature (during installation) | -5 °C to +70 °C |
| Maximum conductor temperature | +70 °C (continuous) |
| Outer diameter (approx.) | 17–19 mm (typically 18 mm, depending on manufacturer) |
| Standards / Approvals | DIN VDE 0276-603, HD 603 S1, VDE-approved, flame-retardant according to IEC 60332-1-2 |
| Installation note | Direct burial in soil possible (sand bed + warning tape recommended) |
| Current carrying capacity (typical, buried) | Approx. 50–60 A per phase (at 20 °C soil temperature, per VDE tables; project-specific) |
Available Lengths & Prices – Buy NYY-J 5x6 mm² Underground Cable
Choose the perfect quantity for your project – from small renovations to medium-sized construction works:
- 25 m coil – ideal for smaller connections
- 50 m coil – popular with electrical contractors
- 100 m coil – favourite for larger installations (“erdkabel 5x6 100m” / “nyy-j 5x6 100m”)
- By the metre – cut to exact length from 1 m
- Bulk quantities / drums – available on request for large projects
B2B advantages at ekabel24: Wholesale prices, 0% VAT for EU business customers (DE, NL, AT, BE, CH, FR), volume discounts from €5,000, free shipping from €500 (DE) / €1,000 (AT/NL/BE).
Frequently Asked Questions about NYY-J 5x6 mm² Underground Cable (FAQ)
Can NYY-J 5x6 mm² be laid directly in the ground without conduit?
Yes, according to DIN VDE 0276-603 it is approved for direct burial. Recommended: 10–15 cm sand bed, cable warning tape, and sufficient cover depth for protection and future detection.
What is the outer diameter of NYY-J 5x6 mm²?
The outer diameter is approximately 17–19 mm, typically around 18 mm (depending on the manufacturer). For specific requirements, please check the latest technical drawing or contact our support.
What is the current carrying capacity of the 5x6 mm² underground cable?
For direct burial (20 °C soil temperature): approx. 50–60 A per phase (according to VDE 0276-603 tables). In air it is lower (approx. 40–50 A). Exact values depend on installation method, grouping, and ambient conditions. For complex projects, we recommend consulting an electrical planner.
What is the difference between NYY-J and NYY-O at 5x6 mm²?
NYY-J has a green-yellow protective earth conductor (5th core). NYY-O has numbered black cores without a separate earth colour. NYY-J is the standard choice in Germany, Austria, Switzerland, and most of the EU for most installations.
Can NYY 5x6 underground cable also be used indoors?
Yes, it is approved for fixed installations indoors and outdoors. For flexible indoor applications, NYM-J is often preferred as it is easier to handle.
What temperature ranges apply to NYY-J 5x6?
Fixed installation: -40 °C to +70 °C; during short-term movement: -5 °C to +70 °C. Maximum continuous conductor temperature: 70 °C.
When do I get B2B prices or 0% VAT?
With a free B2B account, business customers from Germany, Netherlands, Austria, Belgium, Switzerland, and France immediately receive wholesale prices and 0% VAT. Additional discounts apply from €5,000 order value.
Is the NYY-J 5x6 mm² underground cable VDE-tested?
Yes, it complies with DIN VDE 0276-603 (HD 603 S1), is flame-retardant according to IEC 60332-1-2, and carries the VDE mark – full standard conformity for professional use.
For which applications is NYY-J 5x6 particularly suitable?
It is the ideal medium cross-section for construction sites with moderate power demand, commercial power supply, machine connections, renovations, and laboratories – where 5x2.5 mm² is too small and 5x10 mm² would be oversized.
Still have questions about buying NYY-J 5x6 mm²? Our support team is happy to advise electrical contractors, construction companies, research institutions, and B2B buyers from DE, NL, AT, BE, CH, and FR on a project-specific basis!