THWN-LS
3 coding systems recognise this code
NOM / NMX (Mexico)
| Symbol | Meaning |
|---|---|
T | Thermoplastic (Termoplastico) insulation |
W | Resistant to water (Resistente al agua) |
N | Nylon (polyamide) jacket |
LS | Low smoke emission (Baja emision de humos); PVC-LS is flame-retardant, low smoke, low HCl, not halogen-free |
THWN-LS | Thermoplastic water-resistant nylon-coated low-smoke wire (Mexico). 600 V, 75 C. NOM-063-SCFI; NMX-J-010-ANCE |
NEC / UL (USA)
| Symbol | Meaning |
|---|---|
T | Thermoplastic (PVC) insulation |
H | Heat resistant, 75 C (one H) |
W | Approved for wet locations |
N | Nylon outer covering |
THWN | Thermoplastic heat- and water-resistant nylon-coated building wire, 75 C. 600 V, 75 C wet and dry. UL 83; NEC Article 310 |
NBN
| Symbol | Meaning |
|---|---|
T | Telephone Cable |
H | Resistant To Humidity |
W | Polyethelene (PE) |
N | Chloroprene Rubber |
L | Lead Sheath |
S | Fine-Wired For Fixed Installations-Class 5 |