Stranded Wire Applications
Expanded Wire Usage
Historically, the terminals on Schneider Electric's power distribution blocks have only been evaluated for use with rigid Class B and C wire. Open and enclosed power distribution blocks have now been evaluated for use with flexible stranded wire classes according to UL 486A-B and include more wire classes.
Stranded Wire Characteristics and Usage
Stranded wire is composed of a number of small gauge wire bundled or wrapped together to form a larger conductor. The more individual wire strands in a wire bundle, the more flexible, kink-resistant, break-resistant, and strong it is. Stranded wire is capable of carrying more amperage (more surface area), less likely to get damaged in a pull, easier to handle, and weighs less than solid wire. Stranded wire tends to be a better conductor than solid wire because the individual wires collectively comprise a greater surface area.
Solid Wire Characteristics and Usage
The benefits of solid wire are cost, simplicity, and durability. It is a single, thick strand of wire and is therefore resistant to damage. For applications which require a great deal of movement, vibration, or require to be bent into complex shapes solid wire is undesirable because it lacks the strength and flexibility to endure reshaping and motion.
Stranded Wire Applications
- Robotics
- Automotive
- Circuit Boards
- Electronics
Conclusion
Long-term durability must be weighed against choosing wire type based on cost. Solid wire costs less than stranded wire, but stranded wire will last longer in applications where motion or frequent alterations to the wiring may occur.
Torque values for stranded wire classes are included in Wire Classes.