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MTW
= Machine Tool Wire (UL)
RHH/RHW
= Rubber insulated High Heat/Water Resistant insulated wire (UL)
SIS
= Synthetic Insulated Switchboard wire (UL)
TEWN
= Thermoplastic insulated Equipment Wire Nylon jacketed wire (CSA)
TFFN
= Thermoplastic Flexible Fixture wire Nylon jacketed (UL)
TFN
= Thermoplastic Fixture Wire Nylon jacketed (UL)
THHN
= Thermoplastic High Heat resistant Nylon jacketed insulated wire (UL)
THW
= Thermoplastic Heat and Water resistant insulated wire (UL)
THWN
= Thermoplastic Heat and Water resistant insulated wire, Nylon jacketed (UL)
TWN
= Thermoplastic Water resistant insulated wire, Nylon jacketed (CSA)
USE
= Underground Service Entrance cable
XHHW
= Cross-linked High Heat Water resistant insulated wire (UL)
Portable Cord Letters
and Connotations
S
= 600 VOLT SERVICE CORD (First recognized by UL)
J
= JUNIOR SERVICE - 300 VOLT
T
= THERMOPLASTIC
V
= VACUUM CORD
E
= ELASTOMER (Looks and feels like rubber, but is actually a thermoplastic)
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)**
**Do not confuse this with the mining cable Type "W" which refers to
"without ground," such as 4/0-3 W. |
