3x2.5 NYM
3x2.5 NYM is a DIN VDE type names (Germany) cable designation: N = German national (VDE) type; Y = PVC insulation TI1 (DIN VDE 0281-1): 0,6 mm at 1,5 mm², 0,7 at 2,5, 0,8 at 4 and 6, 1,0 at 10 and 16, 1,2 at 25 and 35 mm² (DIN VDE 0250-204 Table 1); M = Sheath of PVC TM1 (DIN VDE 0281-1), 1,4 to 1,8 mm, over a common covering that fills the gaps, 0,4 to 1,2 mm (a guide value; none on a single core) (DIN VDE 0250-204 5.6, 5.7, Table 1); 3X2.5 = 2.5 mm², 3 cores, one of them green-yellow (protective); NYM = NYM: PVC installation cable (Mantelleitung) for fixed installation, the type of DIN VDE 0250-204. U0/U 300/500 V (clause 4); laying after DIN VDE 0298-3 (clause 7). DIN VDE 0250-204:2000-12 (1 core 1,5 to 16 mm², 2 to 5 cores 1,5 to 35 mm², 7 cores 1,5 and 2,5 mm², 5.1; bare copper, solid class 1 to 10 mm², stranded class 2 from 16 mm², 5.2; mean overall diameter limits, Table 1 columns 7 and 8, e.g. 3 x 1,5 mm²: 8,2 to 9,9 mm, 5 x 2,5 mm²: 11,0 to 13,3 mm; tests, Table 2: 2 kV a.c. for 5 min on the complete cable).
1 coding system recognises this code
DIN VDE type names (Germany)
| Symbol | Meaning |
|---|---|
N | German national (VDE) type |
Y | PVC insulation TI1 (DIN VDE 0281-1): 0,6 mm at 1,5 mm², 0,7 at 2,5, 0,8 at 4 and 6, 1,0 at 10 and 16, 1,2 at 25 and 35 mm² (DIN VDE 0250-204 Table 1) |
M | Sheath of PVC TM1 (DIN VDE 0281-1), 1,4 to 1,8 mm, over a common covering that fills the gaps, 0,4 to 1,2 mm (a guide value; none on a single core) (DIN VDE 0250-204 5.6, 5.7, Table 1) |
3X2.5 | 2.5 mm², 3 cores, one of them green-yellow (protective) |
NYM | NYM: PVC installation cable (Mantelleitung) for fixed installation, the type of DIN VDE 0250-204. U0/U 300/500 V (clause 4); laying after DIN VDE 0298-3 (clause 7). DIN VDE 0250-204:2000-12 (1 core 1,5 to 16 mm², 2 to 5 cores 1,5 to 35 mm², 7 cores 1,5 and 2,5 mm², 5.1; bare copper, solid class 1 to 10 mm², stranded class 2 from 16 mm², 5.2; mean overall diameter limits, Table 1 columns 7 and 8, e.g. 3 x 1,5 mm²: 8,2 to 9,9 mm, 5 x 2,5 mm²: 11,0 to 13,3 mm; tests, Table 2: 2 kV a.c. for 5 min on the complete cable) |
What is NYM cable?
NYM: PVC installation cable (Mantelleitung) for fixed installation, the type of DIN VDE 0250-204. Rating: U0/U 300/500 V (clause 4); laying after DIN VDE 0298-3 (clause 7). Standard: DIN VDE 0250-204:2000-12 (1 core 1,5 to 16 mm², 2 to 5 cores 1,5 to 35 mm², 7 cores 1,5 and 2,5 mm², 5.1; bare copper, solid class 1 to 10 mm², stranded class 2 from 16 mm², 5.2; mean overall diameter limits, Table 1 columns 7 and 8, e.g. 3 x 1,5 mm²: 8,2 to 9,9 mm, 5 x 2,5 mm²: 11,0 to 13,3 mm; tests, Table 2: 2 kV a.c. for 5 min on the complete cable).
NYM-J has a green-and-yellow core, NYM-O none (3.2). The letter reading below this row is the DIN VDE 0250 letter code; this row is the type as the standard defines it.
Documents and pages the readings were taken from
- DIN VDE 0250-204:2000-12 (clauses 3 to 7 p. 4 to 6, Table 1 and Table 2)
DIN VDE type names (Germany): how to read the cable type names
Fire behaviour (EU CPR)
PVC sheath (M).
Typically targeted, as declared by makers for this kind of construction in the examples this site checked (not the class of this cable):
EcaN1XV-R, Ahlsell (seller)Cca-s3,d1,a3FG16OR16, Nexans (La Triveneta Cavi)EcaU1000 R2V, Nexans (La Triveneta Cavi)EcaN2XSY, Waskönig+Walter (10 kV datasheet)
Listed as sources, alphabetically by maker. No maker pays to appear here.
A CPR class is declared by the maker in its Declaration of Performance and printed on the sheath (EN 50575 cl 7). This decoder does not assign one. What the CPR classes mean →
Sources: EN 13501-6 draft and FprEN 50575:2014 final draft (drafts, not the published texts); IEC 60332-3-24:2000+A1:2008; EN 13501-3 draft A2.
3x2.5 NYM: equivalents in other countries
Shown for 3x2.5 300/500 V. Each country's rules are applied to this build, keeping the conductor, section, cores, voltage, screen, armour and sheath.
| Country | Standard | Name in that country | Verdict | Differences |
|---|---|---|---|---|
| International (IEC) | 60227 IEC 10 (IEC 60227-4) | 60227 IEC 10 3G2,5 300/500 V | Close | Insulation 0.7 → 0.8 mm; Sheath 1.4 → 1.2 mm |
| China | GB/T 9330 | KVV 3x2.5 450/750 V | Close | rated higher: 450/750 V (this cable 300/500 V); Insulation 0.7 → 0.8 mm; Inner covering / bedding material: not in the equivalent; Sheath 1.4 → 1.2 mm |
Nominal values computed by each standard's rules, not manufacturer data. This is not a statement that two cables are interchangeable: the buyer's specification and the maker's type test decide.
3x2.5 NYM as the cable designer builds it, 3x2.5 300/500 V
Overall diameter 10.5 mm, about 180 kg/km. Nominal values from the standard's tables for this size, computed, not a maker's data.
| Layer | Material | Thickness, mm | Over the layer, mm |
|---|---|---|---|
| Insulation | PVC | 0.70 | 3.2 |
| Filler | PVC | 6.9 | |
| Inner covering / bedding | PVC | 0.40 | 7.7 |
| Sheath | PVC | 1.4 | 10.5 |
3x2.5 NYM on a drum
The smallest drum that passes every check, for 10.5 mm and about 180 kg/km as the cable designer builds it. Drums as their makers print them; lengths are estimates: whole layers wound nested (each turn in the groove of the layer below), wound diameter 1.05 × OD, 50 mm freeboard under the flange rim. Cable makers' own tables print less, as they count aligned layers.
| Length | Drum size (its makers) | Layers | Gross weight |
|---|---|---|---|
| 500 m | KTG 7 (710 mm flange), wood KTG drums (Europe), Bayka, KTG | 10 of 13 | 115–118 kg |
| 1,000 m | KTG 9 (900 mm flange), wood KTG drums (Europe), Bayka, KTG | 12 of 18 | 227–231 kg |
Barrel at least 15 × OD = 157 mm for a cable of this kind (Low voltage, multi-core): KTG table, the cable's datasheet wins. A load rating is the drum maker's own.
Other lengths, drums and weights: the cable drum calculator
Load it on a truck: 1000 m on its drum in the loading planner
Laying, sizes and datasheet: 3x2.5 NYM
Selling this cable? Open it in the designer and get a datasheet with your logo (Pro). Open the cable designer · See Pro
Work with 3x2.5 NYM
Who makes or stocks this cable?
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