Connotations Used To Describe Portable Cord

The letters attached to portable cord types each possess a specific meaning. Below are the meanings that will help you decipher the type of portable cord you will need. For example, Type SO portable cord is a 600 volt service cord with an oil resistant outer jacket.

S = 600 Volt Service Cord

J = Junior Service - 300 Volt

T = Thermoplastic

E = Elastomer - thermoplastic that looks and feels like rubber

O = Oil Resistant Outer Jacket

OO = Oil Resistant Outer Jacket and Oil Resistant Insulation

W = CSA Weather and Water Resistant (approved for indoor and outdoor use)