NYM 2x1.5 or 3x1.5 cable is often compared when planning home electrical installation, especially for lighting circuits, switches, and light-duty socket points. Both use 1.5 mm2 conductors, but the number of cores is different. This difference determines whether the route only carries phase and neutral, or also provides a grounding conductor.
PT. Supreme Jaya Abadi supplies electrical and electronic cables, including home electrical cables and the NYM cable category. This article helps buyers understand each cable function so the choice is based on installation needs and building safety, not only price.
Understanding NYM 2x1.5 and 3x1.5 codes
The code 2x1.5 means the cable has 2 conductor cores, each with a 1.5 mm2 cross section. The code 3x1.5 means the cable has 3 conductor cores of the same size. In home installation, the additional core in 3x1.5 cable is commonly used for grounding or protective conductor needs, depending on the wiring design.
Core count differences
- NYM 2x1.5: commonly used for phase and neutral on simple circuits.
- NYM 3x1.5: provides one additional core for grounding or selected circuit needs.
- 1.5 mm2 size: commonly used for lighting or light loads, but it must still match MCB rating and installation standards.
If the question is not only core count but also cable size against home power capacity, buyers can read the article on choosing home electrical cable size by power load as a further reference.
Comparison Table of NYM 2x1.5 and NYM 3x1.5
| Criteria | NYM 2x1.5 | NYM 3x1.5 |
|---|
| Core count | 2 cores | 3 cores |
| Common use | Lighting route or simple circuit | Route that needs grounding or an extra core |
| Protection readiness | Needs a separate grounding route when required | More ready for circuits with grounding |
| Cost | More economical | Higher, but more complete for selected routes |
This table is a practical overview only. The final decision should still follow installation standards, building conditions, load type, and guidance from an electrician who understands the home's panel and circuit distribution.
When Is NYM 2x1.5 Enough?
NYM 2x1.5 can be considered for routes that do not require a grounding conductor inside the same cable, such as simple lighting circuits according to the electrician's design. It is also often selected when grounding has been provided separately or the installation system does not require an additional core at that point.
Typical use conditions
- Lighting routes with light loads.
- Selected switch circuits that only need phase and neutral according to design.
- Protected indoor installation away from direct moisture and excessive heat.
- Projects that still use proper MCB protection and load distribution.
For cable type selection based on the installation area, the article about NYM or NYY cable for electrical installation can help compare indoor and outdoor cable usage.
When Should You Choose NYM 3x1.5?
NYM 3x1.5 is more suitable when the route needs a grounding conductor inside the same cable. This is important for selected points related to metal-body equipment, grounded sockets, or wiring designed to be neater and safer. During construction or renovation, 3-core cable on points that need grounding is often more practical for long-term use.
Steps to Choose NYM 2x1.5 or 3x1.5
Buyers should prepare route data before purchasing cable. This makes technical recommendations clearer and reduces wrong purchases.
- Define the route function. Separate lighting, switch, socket, and special equipment routes.
- Check grounding needs. If the point needs a protective conductor, consider NYM 3x1.5.
- Calculate route load. Make sure 1.5 mm2 fits current, cable length, and MCB rating.
- Check the installation area. NYM is used for protected indoor areas, not direct underground installation.
- Select products with clear specifications. Buyers can view Kabel Kobe NYM as a product reference or start from the product catalogue.
Mistakes to Avoid
A common mistake is choosing 2x1.5 only because it is cheaper, while the point actually needs grounding. Another mistake is using 1.5 mm2 cable for loads that should use a larger size. Cable, MCB, grounding, terminals, conduit, and joints should be viewed as one system.
Checklist before buying
- The route function is clear.
- Phase, neutral, and grounding needs have been determined.
- Conductor size fits current and route length.
- The cable type matches protected indoor home installation.
- Brand and cable specifications are easy to verify.
Buyers can contact PT. Supreme Jaya Abadi with route data, number of lighting or socket points, grounding needs, and estimated load so the NYM cable recommendation can be more suitable.
Closing
NYM 2x1.5 and 3x1.5 can both be used in home installations, but their core needs are different. NYM 2x1.5 is suitable for simple routes without a grounding core in the same cable, while NYM 3x1.5 is better for routes requiring a protective conductor. The right selection makes the installation neater and safer.