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  8. UL and CSA Classification of Cords

UL/CSA Classification of Cords

S = Service Grade (also means extra hard service when not followed by J, V, or P)

J = Hard Service

V = Vacuum cleaner cord (also light duty cable)

P = Parallel cord (also known as zip cord)—Always light duty

E = Thermoplastic Elastomer (UL/NEC designation ONLY)

O = Oil Resistant*

T = Thermoplastic

W = Outdoor—includes sunlight resistant jacket and wet location rated conductors (formerly "W-A")

H = Heater cable

VW-1 = Flame retardant

FT2 = Flame retardant

* When only one "O" appears in a classification (i.e. SJEOW), only the outer jacket material is oil resistant. If two "O's" are in the classification (i.e. SEOOW), the insulation covering the conductors and the outer jacket insulation are all oil resistant

UL/CSA Classification of Cords

PVC
UL Types CSA Types
SVT SVT
SJT SJT
SJTW SJTW
SJTO SJTO
SJTOW SJTOW
ST ST
STW STW
STO STO
STOW STOW
SPT-1 SPT-1
SPT-2 SPT-2
SPT-3 SPT-3
TPE
UL Types CSA Types
SJE SJT-TPE
SJEW SJTW-TPE
SJEO SJTO-TPE
SJEOW SJTOW-TPE
SJEOO SJTOO-TPE
SE ST-TPE
SEW ST-TPE
SEO STO-TPE
SEOW STOW-TPE
SEOW STOW-TPE
SEOO STOO-TPE
SEOOW STOOW-TPE
Thermoset
UL Types CSA Types
S S
SO SO
SOW SOW
SOO SOO
SOOW SOOW
SJ SJ
SJO SJO
SJOW SJOW
SJOO SJOO
SJOOW SJOOW