OFNR
2 coding systems recognise this code
NEC / UL (USA)
| Symbol | Meaning |
|---|---|
OF | Optical fibre |
N | Nonconductive (dielectric) |
R | Riser |
OFNR | Optical fibre cable, nonconductive riser, riser. Dielectric. UL 1651; NEC Article 770 |
NEK 606
| Symbol | Meaning |
|---|---|
O | Impregnated Paper, Oilfilled Cable |
F | Bedding Or Taping (Halogen-Free) |
N | Steel (Laminated To Outer Jacket) |
R | Ethylenepropylene Rubber - Epr |