6491B
6491B is a BS 6004 / BS 6500 / BS 7211 type numbers (UK) cable designation: 649 = Single-core non-sheathed cable (insulation only), for conduit and trunking; 1 = Number of cores: 1; B = Low smoke, halogen-free (LSZH / LSF) materials; 6491B = 6491B: single-core low smoke halogen-free (LSF) insulated, non-sheathed wire (the UK number of H07Z-U / H07Z-R). 450/750 V from 1.5 mm2 (300/500 V up to 1.0 mm2), 90 C maximum conductor temperature (Anixter p. 1:18). BS 7211 and harmonised H07Z-U / H07Z-R (Anixter p. 1:18); now BS EN 50525-3-41.
1 coding system recognises this code
BS 6004 / BS 6500 / BS 7211 type numbers (UK)
| Symbol | Meaning |
|---|---|
649 | Single-core non-sheathed cable (insulation only), for conduit and trunking |
1 | Number of cores: 1 |
B | Low smoke, halogen-free (LSZH / LSF) materials |
6491B | 6491B: single-core low smoke halogen-free (LSF) insulated, non-sheathed wire (the UK number of H07Z-U / H07Z-R). 450/750 V from 1.5 mm2 (300/500 V up to 1.0 mm2), 90 C maximum conductor temperature (Anixter p. 1:18). BS 7211 and harmonised H07Z-U / H07Z-R (Anixter p. 1:18); now BS EN 50525-3-41 |
Fire behaviour (EU CPR)
Halogen-free compound (B, 6491B). Under the CPR this shows in the additional classes: acidity a1 to a3 (EN 60754-2) and smoke s1 to s3 (EN 50399; s1a and s1b add the 3 m cube test EN 61034-2). The main class, Aca to Fca, depends on the whole construction.
Typically targeted, as declared by makers for this kind of construction in the examples this site checked (not the class of this cable):
B2ca-s1,d0,a11-CXKH-R-J, Kablo VrchlabíCca-s1b,d1,a1FG16(O)M16, Nexans (La Triveneta Cavi)B2ca-s1a,d1,a1FG18(O)M16, Nexans (La Triveneta Cavi)DcaFXQJ, Nexans NorwayCca-s1,d1,a1H07Z1-K, Nexans SpainB2caAXQJ-RMF, Prysmian Sweden (12/20 kV)Cca-s1b,d1,a1RZ1FZ1-K (AS), Top CableCca-s1a,d1,a1RZ1-K (AS), Top Cable (B2ca-s1a,d1,a1 for some sizes)
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: 6491B
Terms on this page: conduit
Work with 6491B
Related cables
More BS 6004 / BS 6500 / BS 7211 type numbers (UK) designations