RS PRO 0.78mm Enamelled Copper Wire, 21 AWG 120m Reel

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Copper wire, a highly effective electrical conductor made from pure copper, is extensively used across various applications, including electrical wiring, telecommunications, electronics, and power transmission. In New Zealand (NZ), pure copper wire is favored for its outstanding electrical and thermal conductivity, as well as its resistance to corrosion.

The manufacturing process involves drawing copper rods or bars through a series of dies to reduce their diameter, resulting in long, continuous strands of wire. The wire's diameter varies based on its intended application, ranging from thin wires for electronics to thicker wires for power transmission.

Solid copper wire is preferred for electrical applications due to copper's exceptional conductivity, which enables electric current to flow with minimal resistance, thereby reducing power loss and enhancing the efficiency of electrical systems. Additionally, insulated copper wire boasts high thermal conductivity, effectively dissipating heat generated during current transmission.

Copper wires’ malleability allows it to be easily shaped and bent into various configurations, while its ductility enables it to be drawn into thin wires without breaking. These properties make copper wire versatile and well-suited for a wide range of applications across NZ.

## **Common Types of Copper Wire**

There is a wide range of copper wire to suit diverse applications. Here are some of the most common types:

### **Bare Copper Wire**

Pure copper wire is a highly conductive and cost-effective option for grounding electrical systems and various other applications in NZ where insulation is not required. Its excellent conductivity and malleability make it ideal for earthing rods, busbars, and other electrical components. 

### **Enamelled Copper Wire**

Enamel copper wire, also known as magnet wire, is coated with a thin layer of insulation, making it suitable for winding coils in motors, transformers, and inductors. This insulation provides electrical isolation while allowing for tight windings and efficient heat dissipation. 

### **Tinned Copper Wire**

Tinned copper wire features a thin layer of tin coating over the copper wire, providing enhanced corrosion resistance and improved solderability. This makes it suitable for applications in harsh environments or where moisture and humidity are present. 

## **Key Benefits of Copper Wire**
- **Excellent Electrical Conductivity:** Pure copper wire is an excellent conductor of electricity, second only to silver. It allows electric current to flow with minimal resistance, resulting in efficient transmission of electrical power in various applications across NZ.
- **High Thermal Conductivity:** Copper has excellent thermal conductivity, meaning it can effectively dissipate heat generated during the transmission of electrical current.
- **Ductility and Flexibility:** Copper wiring is highly malleable and ductile, allowing it to be easily shaped and bent without breaking.
- **Corrosion Resistance:** Copper has inherent corrosion resistance properties, which help protect the wire from environmental factors such as moisture and humidity.
- **Compatibility:** Copper wire is compatible with a wide range of connectors, terminals, and other electrical components.
- **Safety:** Copper wire is considered safe for use in electrical applications. It has a low risk of fire hazard and is less prone to melting or degrading under high electrical loads.

## **Applications of Copper Wiring**

Copper wire is essential across diverse industries due to its conductivity and versatility. Here's how:

- **Electronics:** Copper wire forms the circuits in devices like smartphones and computers, transmitting signals and power efficiently. Its conductivity and ability to be miniaturized are key for modern electronics.
- **Automotive:** Vehicles rely on copper wiring for power distribution and signal transmission in engines, lighting, and safety systems.
- **Power Transmission:** Thick copper wire transmits electricity over long distances with minimal energy loss, making it ideal for high-voltage power lines.
- [**Renewable Energy**](https://nz.rs-online.com/web/c/power-supplies-transformers/renewable-energy/)**:** Copper wire connects and transmits electricity generated by solar panels and wind turbines, withstanding outdoor conditions.
- [**HVAC Systems**](https://nz.rs-online.com/web/c/hvac-fans-thermal-management/)**:** Copper wire is used in heating and cooling systems for thermostats, sensors, and control wiring due to its thermal conductivity.
- [**Electrical Wiring**](https://nz.rs-online.com/web/content/discovery/ideas-and-advice/wiring-colours-guide)**:** Insulated copper wire is the standard for safe and reliable power distribution in residential and commercial buildings.

## **Power Your Projects with Copper Wire from RS New Zealand**

RS New Zealand is your trusted supplier of copper wire in a variety of types and sizes. We stock one of the largest selections of pure copper wire in NZ from leading brands such as [Block](https://nz.rs-online.com/web/b/block/), [Kabeltronik](https://nz.rs-online.com/web/b/kabeltronik/) and our very own [RS PRO](https://nz.rs-online.com/web/content/m/rs-pro). Whether you need solid copper wire for electrical installations, enamel copper wire for electronics, or thick copper wire for industrial applications, buy copper wire from RS NZ at competitive prices with fast delivery, and expert support.

## **Ordering and Delivery Information for Copper Wire in NZ**

RS New Zealand offers fast and reliable delivery services. For more information about our delivery options and fees, please visit our [delivery page](https://nz.rs-online.com/web/content/support/all-articles/delivery).



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RS PRO Copper Wire

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