Cablesizer

NEC Cable Types

Cable Type Max Operating Temperatures (oC / oF) Description Application
FEP / FEPB 90 / 194
200 / 392
Fluorinated etyhlene propylene (FEP)
Fluorinated etyhlene propylene with braid (FEPB)
FEP: dry and damp locations
FEPB: dry locations
MI 90 / 194
250 / 482
Mineral insulated (metal sheathed) 90oC: dry and wet locations
250oC: special applications
MTW 60 / 140
90 / 194
Moisture, heat and oil resistant thermoplastic 60oC: machine tool wiring in wet locations
90oC: machine tool wiring in dry locations
PFA / PFAH 90 / 194
200 / 392
250 / 482
Perfluoro-alkoxy (PFA)
Perfluoro-alkoxy, high temperature (PFAH)
90oC: dry and damp locations
200 and 250 oC: dry locations - special applications
RHH 90 / 194 Thermoset rubber, heat resistant Dry and damp locations
RHW / RHW-2 75 / 167
90 / 194
Thermoset rubber, moisture resistant Dry and wet locations
SA 90 / 194
200 / 392
Silicone rubber 90oC: dry and damp locations
200oC: special applications
SIS 90 / 194 Thermoset Switchboard wiring only
TBS 90 / 194 Thermoplastic with outer braid Switchboard wiring only
TFE 250 / 482 Extruded polytetrafluoroethylene Dry locations only
THHN 90 / 194 Thermoplastic, heat resistant, nylon jacket outer sheath Dry and damp locations
THHW 75 / 167
90 / 194
Thermoplastic, heat and moisture resistant 75oC: wet locations
90oC: dry locations
THW / THW-2 75 / 167
90 / 194
Thermoplastic, heat and moisture resistant THW - 75oC: wet locations 90oC: special applications (electric discharge lighting)
THW-2 - dry and wet locations
THWN / THWN-2 75 / 167
90 / 194
Thermoplastic, moisture and heat resistant, nylon jacket outer sheath Dry and wet locations
TW 60 / 140 Thermoplastic, moisture resistant Dry and wet locations
UF 60 / 140
75 / 167
Underground feeder and branch circuit Dry and wet locations (see Article 340.10 for provisions)
USE / USE-2 75 / 167
90 / 194
Underground service entrance cable Dry and wet locations (see Article 338 for provisions)
XHH 90 / 194 XLPE, heat resistant Dry and damp locations
XHHW / XHHW-2 75 / 167
90 / 194
XLPE, heat and moisture resistant XHHW - 75oC: wet locations, 90oC: dry and damp locations
XHHW-2 - Dry and wet locations
Z 90 / 194
150 / 302
Modified ethylene tetrafluoroethylene 90oC: dry and damp locations
150oC: dry locations (special applications)
ZW / ZW-2 75 / 167
90 / 194
150 / 302
Modified ethylene tetrafluoroethylene, moisture resistant ZW - 75oC: wet locations, 90oC: dry locations, 150oC: dry locations (special applications)
ZW-2 - dry and wet locations