Wire Stranding Classes

Wire stranding classes categorize stranded wires based on their structural characteristics. Stranding refers to the process of bundling multiple thin wires together to form a single, thicker conductor. This technique enhances the wire's flexibility and minimizes the risk of breakage compared to using a solid wire of the same size.

Concentric-Lay Conductors: Classifications and Applications

Class B Stranding Wire: Moderate Flexibility for Power Cables

Class B stranding is commonly found in power cables used in applications that demand moderate flexibility. This includes building wire, industrial cables, and control cables. The concentric-lay construction offers a balance between flexibility and durability, making it ideal for fixed wiring in conduits and other stable environments.

Class C Stranding Wire: Enhanced Flexibility for Dynamic Environments

Class C stranding provides greater flexibility than Class B and is typically used in situations where the wire must endure more frequent bending and movement. This includes machine tool wiring and portable cords, where the cable needs to flex without compromising its structural integrity.

Class D Stranding Wire: Maximum Flexibility for High-Movement Applications

For environments that require extreme flexibility, such as robotics and areas with repetitive movement, Class D stranding is the go-to choice. The extra flexibility reduces the risk of wire fatigue and breakage, making it suitable for dynamic applications where cables are constantly in motion.

Rope-Lay and Bunch Stranded Conductors: High-Flexibility Options

Class G Stranding Wire: Portable Cables for Various Uses

Class G stranding is designed for cables used in portable applications. These wires offer a high level of flexibility, allowing them to be easily moved and adjusted as needed without damaging the internal conductors.

Class H Stranding Wire: Extreme Flexibility for Specialized Needs

Class H stranding is used where extreme flexibility is required, such as in cables for take-up reels. The construction of these cables allows them to withstand frequent winding and unwinding, making them ideal for applications that involve constant motion.

Class I Stranding Wire: Durable for Apparatus Cables and Motor Leads

Class I stranding is commonly used in apparatus cables and motor leads, where durability and moderate flexibility are essential. These wires are designed to handle the mechanical stresses associated with machinery and equipment operation.

Class K Stranding Wire: High-Flexibility Cords and Cables

Composed of No. 30 AWG copper wires, Class K stranding is used in applications requiring high flexibility and durability, such as welding leads and flexible connectors. These wires can handle frequent movement and are ideal for stationary service where long-term reliability is crucial.

Class M Stranding Wire: Constant Service Cords and Cables

Class M stranding, made from No. 34 AWG copper wires, is designed for applications requiring constant service. These cables are extremely flexible and durable, making them suitable for demanding environments where cables are subjected to continuous use.

Comparing Wire Stranding Classes: Flexibility, Applications, and Costs

When selecting the appropriate wire stranding class, it's essential to consider the specific requirements of the application. Each class offers different levels of flexibility, making them suitable for various uses:

Making the Right Choice: Selecting Wire Stranding Classes

Choosing the correct wire stranding class is vital for ensuring optimal performance in your application. Consider factors such as mechanical stress levels, environmental conditions, and cost to make an informed decision. By understanding the unique characteristics and uses of each stranding class, you can select the most suitable wire for your specific needs, ensuring reliability and longevity in your electrical systems. Have questions on how to make the correct selection for your needs? Contact IEWC to talk with a dedicated team member