Here's why SO cords have insulating material:
* Insulation: The primary reason is to prevent electrical current from escaping the conductor and causing a short circuit or electrical shock. The insulating material acts as a barrier between the live wires and the environment.
* Support: The insulating material also provides structural support for the cord, preventing the conductors from bending or breaking under stress.
* Moisture Resistance: Kraft paper is treated with a moisture-resistant coating to protect the cord from water damage. This is especially important for outdoor applications.
SO cords are designed for specific applications, such as:
* Outdoor applications: They are designed for exposed locations and can handle environmental factors like rain and sun.
* High-temperature environments: The insulation material can withstand higher temperatures compared to other types of cords.
* General electrical wiring: SO cords are commonly used for connecting appliances, tools, and other electrical devices.
Other types of cords may use different insulation materials, such as:
* PVC (Polyvinyl chloride): This is a common material for indoor applications and is typically cheaper than kraft paper.
* Rubber: Used for high-voltage or flexible applications.
Remember to always consult the specific instructions for your SO cord to ensure safe and proper usage.