6943B

6943B is a BS 6004 / BS 6500 / BS 7211 type numbers (UK) cable designation: 694 = Steel wire armoured (SWA) power cable, 600/1000 V; 3 = Number of cores: 3; B = Low smoke, halogen-free (LSZH / LSF) materials; 6943B = 6943B: 3 core XLPE insulated, LSZH bedded, steel wire armoured, LSZH sheathed power cable (Cu/XLPE/LSZH/SWA/LSZH, BS 6724). 600/1000 V, 90 C maximum conductor temperature (BS 6724). BS 6724 Table 8 (3 core, stranded copper).

1 coding system recognises this code

BS 6004 / BS 6500 / BS 7211 type numbers (UK)

Symbol	Meaning
`694`	Steel wire armoured (SWA) power cable, 600/1000 V
`3`	Number of cores: 3
`B`	Low smoke, halogen-free (LSZH / LSF) materials
`6943B`	6943B: 3 core XLPE insulated, LSZH bedded, steel wire armoured, LSZH sheathed power cable (Cu/XLPE/LSZH/SWA/LSZH, BS 6724). 600/1000 V, 90 C maximum conductor temperature (BS 6724). BS 6724 Table 8 (3 core, stranded copper)

Fire behaviour (EU CPR)

Halogen-free compound (B, 6943B). 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,a1 1-CXKH-R-J, Kablo Vrchlabí
- Cca-s1b,d1,a1 FG16(O)M16, Nexans (La Triveneta Cavi)
- B2ca-s1a,d1,a1 FG18(O)M16, Nexans (La Triveneta Cavi)
- Dca FXQJ, Nexans Norway
- Cca-s1,d1,a1 H07Z1-K, Nexans Spain
- B2ca AXQJ-RMF, Prysmian Sweden (12/20 kV)
- Cca-s1b,d1,a1 RZ1FZ1-K (AS), Top Cable
- Cca-s1a,d1,a1 RZ1-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.

6943B as the cable designer builds it, 3x16 0.6/1 kV

Overall diameter 20.9 mm, about 1,080 kg/km. Nominal values from the standard's tables for this size, computed, not a maker's data.

Layer	Material	Thickness, mm	Over the layer, mm
Insulation	XLPE	0.70	6.3
Filler	PP		13.6
Inner covering / bedding	Halogen-free (LSZH)	0.80	15.2
Wire armour	Steel	39 × 1.25	17.7
Sheath	Halogen-free (LSZH)	1.6	20.9

6943B on a drum

The smallest drum that passes every check, for 20.9 mm and about 1,080 kg/km as the cable designer builds it. Drums as their makers print them; lengths are estimates within a few per cent of the cable makers' own tables: whole layers, wound diameter 1.05 × OD, 50 mm freeboard under the flange rim.

Length	Drum size (its makers)	Layers	Gross weight
500 m	KTG 12 (1250 mm flange), wood KTG drums (Europe), Bayka, KTG	7 of 11	684–705 kg
1,000 m	KTG 14 (1400 mm flange), wood KTG drums (Europe), Bayka, KTG	12 of 13	1,255–1,279 kg

Barrel at least 15 × OD = 313 mm for a cable of this kind (Low voltage, multi-core): KTG table, the cable's datasheet wins. A load rating is the drum maker's own.

Other lengths, drums and weights: the cable drum calculator

Load it on a truck: 1000 m on its drum in the loading planner

Laying, sizes and datasheet: 6943B

6943B belongs to the family LV armoured cables: the lowest laying temperature, bending radius, pulling, depth, drum handling and the test after laying, every rule with its sources. Laying and handling guide: LV armoured cables

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