Cable Jacket Types Explained
Find out what the markings on your power cable mean
Reference Chart
Below is an easy to follow reference chart to help you decide which jacket type is right for you
Type
Description
AWG Size Range
Number of Conductors
Insulation / Jacket Material
Voltage
Applications
TPT
Tinsel Parallel Thermoplastic
27 Tinsel
2
PVC / No Jacket
250
TS
Tinsel Service
27 Tinsel
2
Rubber / Rubber
125
TST
Tinsel Parallel Thermoplastic
27 Tinsel
2
PVC / PVC
125
SPT-1
Service Parallel Thermoplastic – 1/64″ Insulation
18
2 or 3
PVC / No Jacket
300
Indoor use only: cords for lamps small fans, radios, televisions, etc.
SPT-2
Service Parallel Thermoplastic – 2/64″ Insulation
18-16
2 or 3
PVC / No Jacket
300
Indoor use only: cords for lamps small fans, radios, televisions, etc.
SPT-3
Service Parallel Thermoplastic – 3/64″ Insulation
18-10
2 or 3
PVC / No Jacket
300
Indoor use only: cords for lamps small fans, radios, televisions, etc.
SPE-1
Service Parallel Elastomer – 1/64″ Insulation
18
2 or 3
Elastomer /No Jacket
300
SPE-2
Service Parallel Elastomer – 2/64″ Insulation
18-16
2 or 3
Elastomer /No Jacket
300
SPE-3
Service Parallel Elastomer – 3/64″ Insulation
18-10
2 or 3
Elastomer /No Jacket
300
SV
Service Vacuum
18
2 or 3
Rubber / Rubber
300
Disclaimer
The information contained in this website is for general information purposes only. The information is provided by DSM&T Company Inc. and while we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk.
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 (Vertical specimen Flame Test)
FT2 Flame retardant (Horizontal specimen Flame Test)
Let's Connect.
Drop us a line, send us an email, or fill out a form and let's get started on your project.
CONTACT US