Power Cord Terms And Glossary

Flat Wire

XT
TPT
TS
TST
SPT

SPT-1
SPT-2
SPT-3
SPE-1
SPE-2
SPE-3
Christmas Tree Thermoplastic
Tinsel Parallel Thermoplastic
Tinsel Service
Tinsel Service Thermoplastic
Stranded, Parallel, Thermoplastic This is always followed by a -1, -2, or -3, signifying insulation thickness for different applications
Service Parallel Thermoplastic – 1/64” Wall Thickness .015
SPT-2 Service Parallel Thermoplastic – 2/64” Wall Thickness .030
SPT-3 Service Parallel Thermoplastic – 3/64” Wall Thickness .045
SPE-1 Service Parallel Elastomer – 1/64” Wall Thickness .015
SPE-2 Service Parallel Elastomer – 2/64” Wall Thickness .030
SPE-3 Service Parallel Elastomer – 3/64” Wall Thickness .045

Jacketed Wire (Round)
S
J
T
O
OO
W
V
SV
SVO
SVOO
SVT
SVTO
SVTOO
SVE
SJT
SJTO
SJTOO

SJE
SJEO
SJEOO

S
SO
SOO
SOOW
ST
STO
STOO
STOOW
SE
SEO
SEOO

SJ
SJO
SJOO
SJOOW

HSJ
HSJO

HS
HSO

MTW

NM

R, RH

T, TW
THN,
THHN,
THWN

UF
Stranded (or service wire)
Junior Service (300 volts)- If no "J" is in the wire type, then it is hard service (600 volts).
Thermoplastic- If no "T" is in the wire type, then it has a rubber jacket.
Oil resistant outer jacket
Oil resistant inner conductors with oil resistant outer jacket
CSA approved outdoor use (weather) W-A UL approved outdoor use (weather and atmosphere)
Vacuum - as in vacuum cleaner.
Service Vacuum
Service Vacuum Oil-Resistant Jacket
Service Vacuum Oil Resistant Insulation On Inner Conductors & Outer Jacket
Service Vacuum Thermoplastic
SVT with Oil-Resistant Jacket
SVTO with Oil Resistant Insulation On Inner Conductors & Outer Jacket
Service Vacuum Elastomer
Service Junior Thermoplastic
SJT with Oil-Resistant Outer Jacket
SJTO with Oil-Resistant Insulation On Inner Conductors & Outer Jacket

Service Junior Elastomer
SJE with Oil-Resistant Jacket
SJEO with Oil-Resistant Insulation On Inner Conductors & Outer Jacket

Service
Service with Oil-Resistant Jacket
SO with Oil-Resistant Insulation On Inner Conductors & Outer Jacket
SO with Oil-Resistant Insulation On Inner Conductors & Outer Jacket, Indoor/Outdoor use
Service Thermoplastic
ST with Oil-Resistant Jacket
STO with Oil-Resistant Insulation On Inner Conductors & Outer Jacket
STO with Oil-Resistant Insulation On Inner Conductors & Outer Jacket, Indoor/Outdoor use.
Service Elastomer
SE with Oil-Resistant Jacket
SEO with Oil-Resistant Insulation On Inner Conductors & Outer Jacket

Service Junior
SJ with Oil-Resistant Jacket
SJO with Oil-Resistant Insulation On Inner Conductors & Outer Jacket
SJO with Oil-Resistant Insulation On Inner Conductors & Outer Jacket, Indoor/Outdoor use.

Heater Service Junior
HSJ with Oil-Resistant Jacket

Heater Service
HS with Oil-Resistant Jacket

Thermoplastic insulated machine tool wire.

Non-metallic sheathed cable, multi-conductor building wire.

Rubber insulated wire. Building wire used for construction

Thermoplastic insulated wires. Building wires used for construction




Thermoplastic underground feeder and branch circuit cable. Also used for submersible pump cable


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