Description of NYY-J Cable:
NYY-J Cable is a copper-conductor power cable with PVC insulation and a PVC outer sheath. It is designed for fixed low-voltage distribution in buildings, industrial facilities, utility systems, cable ducts and underground routes.
The J suffix identifies a green/yellow protective conductor within the cable. NYY-O is the related version without a green/yellow protective conductor. Black PVC sheathing provides a durable finish for general indoor, outdoor and buried fixed installations.
Application of NYY-J Cable:
NYY-J cable is used for fixed power distribution where a conventional PVC-insulated and PVC-sheathed cable matches the installation environment.
- Commercial and residential building feeders.
- Industrial plants, workshops and utility rooms.
- Distribution boards and fixed equipment connections.
- Cable ducts, conduits and protected outdoor routes.
- Underground power distribution with suitable route protection.
NYY-J is unarmoured. Routes exposed to impact, crushing or excavation damage use ducts, covers or a separate armoured cable construction.
CONSTRUCTION
Conductor: Copper conductor, solid or stranded according to cable size
Insulation: PVC insulation
Core Identification: NYY-J includes a green/yellow protective conductor; NYY-O does not
Outer Sheath: PVC outer sheath, commonly black
Technique Data of Our NYY-J Cable:
Recommended Reference Data: The tables cover common 2-core, 3-core, 4-core and 5-core NYY-J 0.6/1 kV constructions. The stated core count includes the green/yellow protective conductor.
Current ratings use the reference conditions: 30°C ambient air, 15°C ground temperature, 0.5 m laying depth and soil thermal resistivity of 1.2 K m/W. Values are recommended reference data, not guaranteed XWA production values. Final dimensions, weights and ratings follow the approved XWA datasheet and installation calculation.
1. 2-Core NYY-J Cable:
| Cores x mm2 |
Conductor |
Max. DC resistance at 20 C (ohm/km) |
Insulation (mm) |
Sheath (mm) |
Approx. OD (mm) |
Approx. weight (kg/km) |
In duct (A) |
In air (A) |
| 2 x 2.5 |
RE / Class 1 |
7.41 |
0.8 |
1.8 |
10.7 |
179 |
42 |
27 |
| 2 x 4 |
RM / Class 2 |
4.61 |
1.0 |
1.8 |
13.0 |
268 |
54 |
37 |
| 2 x 6 |
RM / Class 2 |
3.08 |
1.0 |
1.8 |
14.2 |
337 |
68 |
48 |
| 2 x 10 |
RM / Class 2 |
1.83 |
1.0 |
1.8 |
16.2 |
472 |
90 |
66 |
| 2 x 16 |
RM / Class 2 |
1.15 |
1.0 |
1.8 |
18.2 |
644 |
116 |
89 |
2. 3-Core NYY-J Cable:
| Cores x mm2 |
Conductor |
Max. DC resistance at 20 C (ohm/km) |
Insulation (mm) |
Sheath (mm) |
Approx. OD (mm) |
Approx. weight (kg/km) |
In duct (A) |
In air (A) |
| 3 x 1.5 |
RE / Class 1 |
12.1 |
0.8 |
1.8 |
10.4 |
166 |
26 |
18 |
| 3 x 2.5 |
RE / Class 1 |
7.41 |
0.8 |
1.8 |
11.3 |
212 |
34 |
25 |
| 3 x 4 |
RE / Class 1 |
4.61 |
1.0 |
1.8 |
13.1 |
299 |
44 |
34 |
| 3 x 6 |
RE / Class 1 |
3.08 |
1.0 |
1.8 |
14.2 |
380 |
56 |
43 |
| 3 x 10 |
RM / Class 2 |
1.83 |
1.0 |
1.8 |
17.1 |
570 |
75 |
60 |
| 3 x 16 |
RM / Class 2 |
1.15 |
1.0 |
1.8 |
19.2 |
789 |
98 |
80 |
| 3 x 25 |
RM / Class 2 |
0.727 |
1.2 |
1.8 |
22.1 |
1141 |
128 |
106 |
| 3 x 35 |
RM / Class 2 |
0.524 |
1.2 |
1.8 |
24.1 |
1462 |
157 |
131 |
| 3 x 50 |
RM / Class 2 |
0.387 |
1.4 |
1.8 |
27.6 |
1964 |
185 |
159 |
| 3 x 95 |
RM / Class 2 |
0.193 |
1.6 |
2.2 |
40.0 |
4488 |
275 |
244 |
3. 4-Core NYY-J Cable:
| Cores x mm2 |
Conductor |
Max. DC resistance at 20 C (ohm/km) |
Insulation (mm) |
Sheath (mm) |
Approx. OD (mm) |
Approx. weight (kg/km) |
In duct (A) |
In air (A) |
| 4 x 1.5 |
RE / Class 1 |
12.1 |
0.8 |
1.8 |
11.6 |
198 |
26 |
18 |
| 4 x 2.5 |
RE / Class 1 |
7.41 |
0.8 |
1.8 |
12.1 |
252 |
34 |
25 |
| 4 x 4 |
RE / Class 1 |
4.61 |
1.0 |
1.8 |
14.0 |
355 |
44 |
34 |
| 4 x 6 |
RE / Class 1 |
3.08 |
1.0 |
1.8 |
15.4 |
465 |
56 |
43 |
| 4 x 10 |
RM / Class 2 |
1.83 |
1.0 |
1.8 |
18.6 |
702 |
75 |
60 |
| 4 x 16 |
RM / Class 2 |
1.15 |
1.0 |
1.8 |
21.1 |
992 |
98 |
80 |
| 4 x 25 |
RM / Class 2 |
0.727 |
1.2 |
1.8 |
24.2 |
1431 |
128 |
106 |
| 4 x 35 |
RM / Class 2 |
0.524 |
1.2 |
1.8 |
26.6 |
1861 |
157 |
131 |
| 4 x 50 |
RM / Class 2 |
0.387 |
1.4 |
1.9 |
30.9 |
2535 |
185 |
159 |
| 4 x 70 |
RM / Class 2 |
0.268 |
1.4 |
2.1 |
35.1 |
3441 |
252 |
247 |
| 4 x 95 |
RM / Class 2 |
0.193 |
1.6 |
2.2 |
40.4 |
4691 |
303 |
305 |
| 4 x 120 |
RM / Class 2 |
0.153 |
1.6 |
2.4 |
44.2 |
5757 |
313 |
282 |
| 4 x 150 |
RM / Class 2 |
0.124 |
1.8 |
2.5 |
48.5 |
7095 |
390 |
407 |
| 4 x 185 |
RM / Class 2 |
0.0991 |
2.0 |
2.7 |
53.9 |
8810 |
399 |
371 |
| 4 x 240 |
RM / Class 2 |
0.0754 |
2.2 |
2.9 |
61.1 |
11400 |
464 |
436 |
4. 5-Core NYY-J Cable:
| Cores x mm2 |
Conductor |
Max. DC resistance at 20 C (ohm/km) |
Insulation (mm) |
Sheath (mm) |
Approx. OD (mm) |
Approx. weight (kg/km) |
In duct (A) |
In air (A) |
| 5 x 1.5 |
RE / Class 1 |
12.1 |
0.8 |
1.8 |
12.0 |
232 |
24 |
18 |
| 5 x 2.5 |
RE / Class 1 |
7.41 |
0.8 |
1.8 |
13.1 |
302 |
34 |
25 |
| 5 x 4 |
RE / Class 1 |
4.61 |
1.0 |
1.8 |
15.2 |
428 |
44 |
34 |
| 5 x 6 |
RE / Class 1 |
3.08 |
1.0 |
1.8 |
16.5 |
551 |
56 |
43 |
| 5 x 10 |
RM / Class 2 |
1.83 |
1.0 |
1.8 |
20.3 |
853 |
75 |
60 |
| 5 x 16 |
RM / Class 2 |
1.15 |
1.0 |
1.8 |
23.1 |
1212 |
98 |
80 |
| 5 x 25 |
RM / Class 2 |
0.727 |
1.2 |
1.8 |
26.6 |
1759 |
128 |
106 |
NYY-J vs NYY-O and N2XY Cable:
NYY-J and NYY-O share the same PVC-insulated, PVC-sheathed construction. The suffix identifies whether a green/yellow protective conductor is included.
| Feature |
NYY-J |
NYY-O |
N2XY |
| Insulation |
PVC |
PVC |
XLPE |
| Outer sheath |
PVC |
PVC |
PVC |
| Protective conductor |
Included |
Not included |
J or O versions |
| Normal conductor temperature |
70°C |
70°C |
90°C |
| Main distinction |
Green/yellow PE core |
No green/yellow PE core |
Higher-temperature XLPE insulation |
N2XY is the related XLPE-insulated alternative. Its common 90°C conductor rating differs from the 70°C PVC-insulated NYY construction.