British Standard Industrial Cables
6491B to BS 7211 (New BS EN 50525-3-41)

Application and Description

These cables are designed for fixed wiring purposes in domestic and industrial power/lighting applications. They can be used in trunking or conduit, or may be surface mounted when used for earthing. and they are generally in areas (such as public and government buildings) where smoke and toxic fumes may cause a threat to life and equipment. The cables produce no corrosive gasses when burnt and which is particularly important where electronic equipment is installed. 6491B is equivalent to harmonized code H07Z-U/ H07Z-R/H07Z-K.

Cable Construction

• - Bare copper made of solid/strands conductor
  - Solid to BS 6360 CL-1 or IEC 60228 CL-1(H07Z-U)
  - Stranding to BS 6360 CL-2 or IEC 60228 CL-2(H07Z-R)
  - Stranding to BS 6360 CL-5 or IEC 60228 CL-5(H07Z-K)
  - LSOH thermosetting core insulation type EI5

Core Identification

Black, Blue, Green/Yellow, Red, Yellow, White, Violet, Brown, Grey, Orange, Pink

Technical Characteristics

• - Working voltage: 450/750v
• - Test voltage: 2500 volts
• - Minimum bending radius: up to 10 mm² - 3xoverall diameter,
  above 25 mm² - 6xoverall diameter
• - Operating temperature: +0º C to +90º C
  - Short circuit temperature: +250º C
  - Insulation resistance: 10 MΩxkm
  - Halogen free acc. to EN 50267-2-1 / IEC 60754-1
  - Smoke density acc. to EN 50268-2 / IEC 61034-2
  - Corrosivity of gases acc. to EN 50267-2-2, IEC 60754-2
  - Flame retardancy acc. to EN 50265-2-1, IEC 60332-1

Cable Parameter

AWG (No of Strands/ Strand Diameter)	No. of Cores x Nominal Cross Sectional Area #xmm2	Nominal Thickness of Insulation mm	Nominal Overall Diameter mm	Nominal Copper Weight kg/km	Nominal Weight kg/km
16(solid)	1x1.5	7	2.8	14.4	20
14(solid)	1x2.5	8	3.3	24	30
12(solid)	1x4	8	3.8	38	45
10(solid)	1x6	8	4.3	58	65
8(solid)	1x10	10	5.5	96	105
16(7/24)	1x1.5	0.7	3.0	14.4	21
14(7/22)	1x2.5	0.8	3.6	24	33
12(7/20)	1x4	0.8	4.1	39	49
10(7/18)	1x6	0.8	4.7	58	71
8(7/16)	1x10	1	6	96	114
6(7/14)	1x16	1	6.8	154	172
4(7/12)	1x25	1.2	8.4	240	265
2(7/10)	1x35	1.2	9.3	336	360
1(19/13)	1x50	1.4	10.9	480	487
2/0(19/11)	1x70	1.4	12.6	672	683
3/0(19/10)	1x95	1.6	14.7	912	946
4/0(37/12)	1x120	1.6	16	1152	1174
300MCM(37/11)	1x150	1.8	17.9	1440	1448
350MCM(37/10)	1x185	2.0	20.0	1776	1820
500MCM(61/11)	1x240	2.2	22.7	2304	2371
-(61/10)	1x300	2.4	25.4	2980	3050
-(61/9)	1x400	2.6	28.8	3765	3842
-(61/8)	1x500	2.8	32.8	4725	4900
-(127/10)	1x630	2.8	36.5	6205	6334
16(30/30)	1 x 1.5	7	3.5	14.4	24
14(50/30)	1 x 2.5	8	4	24	35
12(56/28)	1 x 4	8	4.8	38	51
10(84/28)	1 x 6	8	6	58	71
8(80/26)	1 x 10	10	6.7	96	118
6(128/26)	1 x 16	10	8.2	154	180
4(200/26)	1 x 25	12	10.2	240	278
2(280/26)	1 x 35	12	11.5	336	375
1(400/26)	1 x 50	14	13.6	480	560
2/0(356/24)	1 x 70	14	16	672	780
3/0(485/24)	1 x 95	16	18.4	912	952
4/0(614/24)	1 x 120	16	20.3	1152	1200
300 MCM (765/24)	1 x 150	18	22.7	1440	1505
350 MCM (944/24)	1 x 185	20	25.3	1776	1845
500MCM(1225/24)	1 x 240	22	28.3	2304	2400