This is our SJ portable cord that we offer at WesBell Electronics. It differs for the SOOW cable and the SJOOW cable because it's not water, oil and solvent resistant. It's a very basic 300 Volt power cable used on small applications to supply power to tools and appliances. If you need more power or you need something weather resistant then you should see our other portable cord products. The SOOW cable is the most popular because it has the 600 Volt rating and it resists mostly anything outdoors. It's the same type of cable used to make extension cords.
Not sure what type of power cable you need? See our Power Cable Questions and Answers. There's also a discussion on the different types of power cable and their applications.