THWN
5 coding systems recognise this code
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 |
NEC 310
| Symbol | Meaning |
|---|---|
T | Thermoplastic Insulation |
H | 75°C Insulation |
W | Moisture Resistant |
N | Nylon Jacket |
CEI-UNEL 35011 (Italy)
| Symbol | Meaning |
|---|---|
T | Telephone Cable |
H | Metallic Paper, Carbon Paper Or Aluminium Tape Screen |
W | Divisible Flat Cable (Inetmediary Groove) |
N | Steel Tape Armour |
NEK 606
| Symbol | Meaning |
|---|---|
T | Cross-Linked Polyethylene (XLPE) |
H | Chlorosulphonated Polyethylene - Csp |
W | Catenary Wire |
N | Polyurethane |
NBN
| Symbol | Meaning |
|---|---|
T | Telephone Cable |
H | Resistant To Humidity |
W | Polyethelene (PE) |
N | Chloroprene Rubber |