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Leading you to an educated decision.

Portable Cord Type
Lettered system of identifying the main characteristics of portable cords
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