TEW Canadian Standard Association type appliance
wires.
With without third conductor for grounding.
TFF Same but exible stranding. 300 60°C
to 105°C. Maybe thermally fused mechanically applied. 600 60°C 90°C.
SPT-3 Same SP-3, except all-thermoplastic. 300 V.
SP-1 All rubber, parallel-jacketed, two-conductor light
duty cord for pendant portable use damp locations.
T
Tape Wrap spirally applied tape over insulated
or uninsulated wire.
SO Hard service cord, same construction type S
except oil resistant neoprene jacket.
Thermoplastic material which softens when
heated and becomes cooling. 300 V.
TW Thermoplastic vinyl-jacketed building wire,
moisture resistant 60°C.
With without third conductor for grounding.
With without third conductor for grounding purposes
only.
Flame-retardant, moisture and heat-resistant 75°C.
SVT Same except all-plastic, construction.
GLOSSARY TERMS: CABLES AND WIRES
.
SP-2 Same SP-1, but heavier construction, with or
without third conductor for grounding purposes.
Thermocouple Lead Wire insulated pair of
wires used from the couple junction box.
SOOW like SO, but oil and water-resistant. Solid stranded single conductor, plastic-
insulated.
SJTO Same SJT but oil resistant thermoplastic outer
jacket.
THWN Same THW but with nylon jacket overall.
ST Hard service cord, jacketed, same type except
all-plastic design. 300 60°C.
Spark Test test designed locate pinholes an
insulated wire application electrical potential
across the material for very short period time while the
wire drawn through electrode eld.
Tray Cable factory-assembled multi-conductor
or multipair control cable approved under the National
Electrical Code for installation cable trays.
6WHSLQGH[)LEHU optical ber, either multi-mode
or singlemode, which the core refractive index is
uniform throughout that sharp step refractive
index occurs the core-to-cladding interface. For light
duty damp locations.
SJT Junior hard service thermoplastic rubberinsulated
conductors with overall thermoplastic jacket. 60°C.
Transmission Transfer electric energy from one
location another through conductors radiation or
induction elds. 600 60°C 105°C. Overall rubber jacket.
Temperature Rating The maximum temperature at
which insulating material may used continuous
operation without loss its basic properties.
Splice interconnection method for joining the ends
of two optical bers permanent semipermanent
fashion.
7ULD[LDO&DEOH three-conductor cable constructed
in three coincident axes, which one conductor in
the centre, second circular conductor concentric with
the rst and the third circular conductor insulated from
the concentric with the rst and second, usually with
insulation, braiding and outer jacket.
SPT-2 Same SP-2, except all-thermoplastic.
TFE Tetra uoroethylene. 75°C.
THHN 90°C, 600 nylon jacketed building wire.
300 V. 60°C.
SVO Same except neoprene jacket. 300 V.
THW Thermoplastic vinyl insulated building wire. 300 60°C. 300 V.
SPT-1 Same SP-1, except all-thermoplastic. 600 60°C.
STO Same but with oil resistant thermoplastic
outer jacket. 60°C.
With without third conductor for grounding. 600 105°C.1141
Y
SJO Same SJ, but neoprene, oil resistant compound outer
jacket. 300 V.
TF Fixture wire, thermoplastic-covered solid 7
strands.
Dry and wet locations.
Solid Conductor conductor consisting single
wire. Can also made „waterresistant“ 300 60°C.
SV Vacuum cleaner cord, two three-conductor,
rubber-insulated.
Twisted Pairs cable composed two small
insulated conductors twisted together without a
common covering. 300 60°C 90°C.
SONET Synchronous Optical Network.
SP-3 Same SP-2, but heavier construction for
refrigerators room air conditioners.
Tear Strength The force required initiate continue
a tear material under speci conditions
