TFR-3
TFR-3 is a KS / KEPCO type names (Korea) cable designation: TFR-3 = TFR-3: fire-retardant cable for emergency circuits: XLPE insulation, heat-resistant reinforced layer, flame-retardant PVC sheath; TFR-3 = TFR-3: 0.6/1 kV fire-retardant cable for emergency circuits, flame-retardant PVC sheath. 0.6/1 kV (Taihan p.52). KS C IEC 60502-1, Taihan standard.
2 coding systems recognise this code
KS / KEPCO type names (Korea)
| Symbol | Meaning |
|---|---|
TFR-3 | TFR-3: fire-retardant cable for emergency circuits: XLPE insulation, heat-resistant reinforced layer, flame-retardant PVC sheath |
TFR-3 | TFR-3: 0.6/1 kV fire-retardant cable for emergency circuits, flame-retardant PVC sheath. 0.6/1 kV (Taihan p.52). KS C IEC 60502-1, Taihan standard |
NEC Article 402 (US fixture wires, NFPA 70)
| Symbol | Meaning |
|---|---|
T | Thermoplastic Insulation |
F | Fixture Wire, Solid Or 7-Strand |
R | Heat-Resistant Rubber Or Cross-Linked Synthetic Polymer (Thermoset) |
-3 | Thicker Insulation (RFHH-3: 1.14 mm / 45 mils) |
How to read a NEC Article 402 (US fixture wires, NFPA 70) cable code
Fire behaviour (EU CPR)
Flame retardant (TFR-3). The single-cable test behind class Eca is EN 60332-1-2 (the flame stops within 425 mm). Bunched cables are tested by IEC 60332-3-24 category C (1.5 l/m, 20 min, char at most 2.5 m), which is not a CPR class test; the CPR ladder test for B1ca to Dca is EN 50399.
PVC sheath (TFR-3).
Typically targeted, as declared by makers for this kind of construction in the examples this site checked (not the class of this cable):
EcaN1XV-R, Ahlsell (seller)Cca-s3,d1,a3FG16OR16, Nexans (La Triveneta Cavi)EcaU1000 R2V, Nexans (La Triveneta Cavi)EcaN2XSY, Waskönig+Walter (10 kV datasheet)
Listed as sources, alphabetically by maker. No maker pays to appear here.
A CPR class is declared by the maker in its Declaration of Performance and printed on the sheath (EN 50575 cl 7). This decoder does not assign one. What the CPR classes mean →
Sources: EN 13501-6 draft and FprEN 50575:2014 final draft (drafts, not the published texts); IEC 60332-3-24:2000+A1:2008; EN 13501-3 draft A2.
Laying, sizes and datasheet: TFR-3
Its sizes are in AWG and kcmil, which are not the same as the nearest mm²: compare them by area and by resistance. AWG to mm²