Flexible Rubber Cables | Cables Britain

H07RN-F BS EN 50525-2-21 Flexible Rubber Cable

Power Generation, Flexible Rubber Cables

Cable Construction

Conductor	Class 5 flexible copper conductor according to BS EN 60228 (previously BS 6360)
Insulation	EPR (Ethylene Propylene Rubber) Type EI4 according to BS EN 50363
Sheath	PCP (Polychloroprene) Type EM2 according to BS EN 50363

Dimensions

No. of Cores	Nominal Cross Sectional Area mm²	Nominal Thickness of Insulation mm	Nominal Overall Diameter mm	Nominal Weight kg/km	A2 Glands Brass	A2PL Gland Plastic
1	1.5	0.8	5.8	52	20/16	20S
1	2.5	0.9	6.5	67	20/16	20S
1	4	1	7.4	92	20/16	20S
1	6	1	8.1	119	20S	20S
1	10	1.2	9.8	185	20S	20S
1	16	1.2	11.35	258	20	20
1	25	1.4	13.3	375	25	20
1	35	1.4	14.6	485	25	25
1	50	1.6	17.2	669	25	25
1	70	1.6	19.35	892	32	32
1	95	1.8	22.2	1160	32	32
1	120	1.8	24.3	1436	32	32
1	150	2	25.9	1748	40	40
1	185	2.2	29.7	2142	40	40
1	240	2.4	31.5	2698	50S	50S
1	300	2.6	36.5	3348	50	50S
1	400	2.8	40.4	4293	50	50
1	500	3	42.6	5262	50	50
1	630	3	47.2	6790	63S	63S
2	1	0.8	8.1	94	20S	20S
2	1.5	0.8	9	120	20S	20S
2	2.5	0.9	10.7	173	20S	20S
2	4	1	12.3	239	20	20
2	6	1	13.8	313	25	25
2	10	1.2	18.6	563	32	25
2	16	1.2	21.7	830	32	32
2	25	1.4	25.8	1211	40	40
3	1	0.8	8.74	117	20S	20S
3	1.5	0.8	9.68	147	20S	20S
3	2.5	0.9	11.48	123	20	20
3	4	1	13.2	297	25	25
3	6	1	14.78	390	25	25
3	10	1.2	19.9	705	32	32
3	16	1.2	23.31	1031	32	32
3	25	1.4	27.7	1512	40	40
3	35	1.4	30.2	1907	50S	50S
3	50	1.6	35.8	2651	50	50S
3	70	1.6	40.1	3484	50	50
3	95	1.8	46.4	4594	63S	63S
4	1	0.8	9.63	142	20S	20S
4	1.5	0.8	10.63	180	20S	20S
4	2.5	0.9	12.6	260	20	20
4	4	1	14.6	336	25	25
4	6	1	16.4	449	25	32
4	10	1.2	21.8	883	32	32
4	16	1.2	25.4	1138	40	40
4	25	1.4	30.7	1714	50S	50
4	35	1.4	33.4	2204	50S	50
4	50	1.6	39.6	3029	50	-
4	70	1.6	44.9	4121	63	-
4	95	1.8	51.9	5361	63	-
5	1.5	0.8	11.8	206	20	20L
5	2.5	0.9	14	297	25	25
5	4	1	16.2	422	25	25
5	6	1	18.2	567	32	32
5	10	1.2	24	1010	40	40
5	16	1.2	28.2	1400	40	40
5	25	1.4	33.9	2096	50S	50
5	35	1.4	37.2	2700	50	50
5	50	1.6	44	3730	63S	63S
7	1.5	0.8	15.13	315	25	25
7	2.5	0.9	17.6	445	25	32
12	1.5	0.8	18.2	493	25	32
12	2.5	0.9	21.4	702	32	32
19	1.5	0.8	22.1	710	32	32

Class 5 Flexible Copper Conductors for Single Core and Multi-Core Cables

Nominal Cross Sectional Area mm²	Maximum Diameter of Wires in Conductor mm	Maximum Resistance of Conductor At 20ºC
		Plain Wires ohms/km
1	0.21	19.5
1.5	0.26	13.3
2.5	0.26	7.98
4	0.31	4.95
6	0.31	3.3
10	0.41	1.91
16	0.41	1.21
25	0.41	0.78
35	0.41	0.554
50	0.41	0.386
70	0.51	0.272
95	0.51	0.206
120	0.51	0.161
150	0.51	0.129
185	0.51	0.106
240	0.51	0.0801
300	0.51	0.0641
400	0.51	0.0486
500	0.61	0.0384
630	0.61	0.0287

Current Carrying Capacity and Mass Supportable (1mm² to 2.5mm²)

Nominal Cross Sectional Area mm²	Current Carrying Capacity		Maximum Mass Supportable By Twin Flexible Cable (See Regulations 522.7.2 and 559.6.1.5 of the 17th Edition of IEE Wiring Regulations) kg
	Single-Phase AC Amps	Three-Phase AC Amps
1	10	10	5
1.5	16	16	5
2.5	25	20	5

Voltage Drop (1mm² to 2.5mm²)

Nominal Cross Sectional Area mm²	DC or Single-Phase AC mV/A/m	Three-Phase AC mV/A/m
1	46	40
1.5	32	27
2.5	19	16

Conductor Operating Temperature: 60°C

Current Carrying Capacity (4mm² and above)

Nominal Cross Sectional Area mm²	60°C Conductor Operating Temperature			85°C Conductor Operating Temperature **
	Single-Phase AC or DC		Three-Phase AC	Single-Phase AC or DC		Three-Phase AC
	1 Two Core Cable, With or Without Protective Conductor Amps	2 Single Core Cables Amps	1 Three Core, Four Core or Five Core Cable Amps	1 Two Core Cable, With or Without Protective Conductor Amps	2 Single Core Cables Amps	1 Three Core, Four Core or Five Core Cable Amps
4	30	-	26	41	-	36
6	39	-	34	53	-	47
10	51	-	47	73	-	64
16	73	-	63	99	-	86
25	97	-	83	131	-	114
35	-	140	102	-	192	140
50	-	175	124	-	240	170
70	-	216	158	-	297	216
95	-	258	192	-	354	262
120	-	302	222	-	414	303
150	-	347	255	-	476	348
185	-	394	291	-	540	397
240	-	471	343	-	645	467
300	-	541	394	-	741	537
400	-	644	-	-	885	-
500	-	738	-	-	1017	-
630	-	861	-	-	1190	-

Ambient Temperature: 30°C
Conductor Operating Temperature: 60°C/85°C
The above table is for 60°C conductor operating temperature is in accordance with T4F1A of the 17th Edition of IEE Wiring Regulations.
** 85°C Table is in accordance with Table 4H2A of the 16th Edition of IEE Wiring Regulations.

The current ratings arranged are for cables in free air but may also be used for cables resting on the surface. If the cable is to be wound on a drum on load the ratings should be reduced in accordance with Note 2 below and for cables which may be covered, see Note 3.

Note 2: Flexible cables wound on reeling drums
The current ratings of cables used on reeling drums are to be reduced by the factors below:

A. Radial Type Drum
-Ventilated: 85%
-Unventilated: 75%

B. Ventilated Cylindrical Type Drum
-1 Layer of cable: 85%
-2 Layer of cable: 65%
-3 Layer of cable: 45%
-4 Layer of cable: 35%

A Radial Type Drum is where spiral layers of cable are accommodated between closely spaced fittings. If fitted with solid flanges the ratings given should be reduced and the drum is described as non-ventilated. If the flanges have suitable apertures the drum is described as ventilated.

A ventilated cylindrical cable drum is where layers of cable are accommodated between widely spaced flanges and the drum and end flanges have suitable ventilating apertures.

3. Where cable may be covered or coiled up whilst on load, or in air movement over the cable restricted, the current rating should be reduced.

It is not possible to specify the amount of reduction but the table of rating factors for reeling drums can be used as a a guide.

Voltage Drop (4mm² and above)

Nominal Cross Sectional Area mm²	Two Core Cable, DC mV/A/m	Two Core Cable, Single-Phase AC mV/A/m			1 Three Core, Four Core or Five Core Cable, Three-Phase AC mV/A/m			2 Single Core Cables, Touching
								DC mV/A/m	Single-Phase AC mV/A/m
4	12	12			10			-	-
6	7.8	7.8			6.7			-	-
10	4.6	4.6			4			-	-
16	2.9	2.9			2.5			-	-
25	1.8	1.8	0.175	1.85	1.55	0.15	1.55	-	-	-	-
35	-	-	-	-	1.1	0.15	1.15	1.31	1.31	0.21	1.32
50	-	-	-	-	0.83	0.145	0.84	0.91	0.91	0.21	0.93
70	-	-	-	-	0.57	0.14	0.58	0.64	0.64	0.2	0.67
95	-	-	-	-	0.42	0.135	0.44	0.49	0.49	0.195	0.53
120	-	-	-	-	0.33	0.135	0.36	0.38	0.38	0.19	0.43
150	-	-	-	-	0.27	0.13	0.3	0.31	0.31	0.19	0.36
185	-	-	-	-	0.22	0.13	0.26	0.25	0.25	0.19	0.32
240	-	-	-	-	0.17	0.13	0.21	0.19	0.195	0.185	0.27
300	-	-	-	-	0.135	0.125	0.185	0.15	0.155	0.18	0.24
400	-	-	-	-	-	-	-	0.115	0.12	0.175	0.21
500	-	-	-	-	-	-	-	0.09	0.099	0.17	0.2
630	-	-	-	-	-	-	-	0.068	0.079	0.17	0.185

Conductor Operating Temperature: 60°C
r = Resistive Component
x = Reactive Component
z = Impedance Value
* A larger voltage drop will result if the cables are spaced

De-Rating Factors

Ambient Temperature °C	35	40	45	50	55
DE-RATING FACTOR	0.91	0.82	0.71	0.58	0.41

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Coil End Lead Type 4 BS 6195 Cable

Power Generation, Flexible Rubber Cables

Cable construction

Conductor	Class 5 flexible tinned copper conductor according to BS EN 60228 (previously BS 6360)
Insulation	4A, 4C: EPR-HOFR (Ethylene Propylene Rubber - Heat and Oil Resistant and Flame Retardant) Type FR1 according to BS 7655 4D, 4E, 4F: EPR-HOFR (Ethylene Propylene Rubber - Heat and Oil Resistant and Flame Retardant) Type FR2 according to BS 7655
Bedding	PET (Polyester Type)
Sheath	CPE (Chlorinated Polyethylene) rubber compound

Dimensions - Coil End Lead TYPE 4 BS 6195 Cable

No. of Cores	Nominal Cross Sectional Area mm²	Nominal Thickness of Insulation mm	Nominal Overall Diameter mm	Nominal Weight kg/km
Coil End Lead Type 4A Cable - 300/500V
1	1.5	0.8	4	29
1	2.5	0.9	4.6	42
1	4	1	5.4	61
1	6	1	6.5	88
1	10	1.2	7.9	141
Coil End Lead Type 4C Cable - 600/1000V
1	10	1.5	8.5	130
1	16	1.5	9.6	190
1	25	1.6	8.5	290
1	35	1.6	12.8	380
1	50	1.7	14.8	510
1	70	1.8	17.2	750
1	95	2	19.7	935
1	120	2.2	21.9	1160
1	150	2.3	24.1	1450
1	185	2.4	26.3	1770
1	240	2.4	28.3	2260
1	300	2.6	33	2760
1	400	2.8	37.4	3880
1	500	3.2	38	4650
1	630	3.3	43	6220
Coil End Type 4D Cable - 1.9/3.3kV
1	2.5	2.8	8.5	100
1	4	2.8	9.1	115
1	6	2.8	10.3	141
1	10	2.8	11.3	216
1	16	2.8	12.4	288
1	25	2.8	13.8	392
1	35	2.8	15.2	509
1	50	2.8	17.1	682
1	70	2.8	19.2	894
1	95	3	22	1168
1	120	3	23.5	1433
1	150	3	25.5	1734
1	185	3	27.5	2073
1	240	3	30.6	2657
1	300	3	33.8	3279
1	400	3	37.8	4229
Coil End Type Lead 4E Cable - 3.8/6.6kV
1	16	5	17.2	408
1	25	5	18.6	527
1	35	5	20	656
1	50	5	22.1	832
1	70	5	24.2	1053
1	95	5	26.3	1304
1	120	5	27.8	1634
1	150	5	29.8	1894
1	185	5	32.1	2242
1	240	5	35.1	2842
Coil End Type 4F Cable - 6.35/11kV
1	25	7.6	24.1	764
1	35	7.6	25.5	911
1	50	7.6	27.3	1114
1	70	7.6	29.4	1344
1	95	7.6	31.5	1610
1	120	7.6	33.3	1919
1	150	7.6	35.3	2248
1	185	7.6	37.3	2616
1	240	7.6	40.3	3252

Class 5 Flexible Copper Conductors for Single Core and Multi-Core Cables

Nominal Cross Sectional Area mm²	Maximum Diameter of Wires in Conductor mm	Maximum Resistance of Conductor At 20ºC
		Plain Wires ohms/km
1.5	0.26	13.3
2.5	0.26	7.98
4	0.31	4.95
6	0.31	3.3
10	0.41	1.91
16	0.41	1.21
25	0.41	0.78
35	0.41	0.554
50	0.41	0.386
70	0.51	0.272
95	0.51	0.206
120	0.51	0.161
150	0.51	0.129
185	0.51	0.106
240	0.51	0.0801
300	0.51	0.0641
400	0.51	0.0486
500	0.61	0.0384
630	0.61	0.0287

Current Carrying Capacity in Free Air

Nominal Cross Sectional Area mm²	Maximum Continuous Current Rating
	Single Cable Amps	2 Cables Bunched Amps	3 Cables Bunched Amps
1.5	-	25	22
2.5	-	34	30
4	-	46	41
6	-	58	53
10	-	80	73
16	-	108	97
25	166	147	128
35	206	182	160
50	250	220	197
70	321	282	254
95	391	343	311
120	455	398	364
150	525	459	422
185	602	523	485
240	711	618	577
300	821	713	670
400	989	855	790
500	1140	986	908
630	1323	1141	1047

De-Rating Factors

Ambient Temperature °C	25	30	35	40	45	50	55	60	65
DE-RATING FACTOR	1.14	1.09	1.05	1.00	0.95	0.90	0.84	0.77	0.71

Ambient temperature: 40ºC
Conductor operating temperature: 90ºC

Notes
The current-carrying capacities in this appendix are based upon the following reference ambient temperatures:
1. For non-sheathed and sheathed cables in air, regardless of the installation method: 30ºC
2. For buried cables, either directly in the soil or in ducts in the ground: 20ºC

The current rating shown are based on conservative assumptions, and therefore, in some instances, may be adjusted according to the ambient installation and operating conditions.

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318-TRS / H05RR-F BS EN 50525-2-21 Cable

Power Generation, Flexible Rubber Cables

Cable Construction

Conductor	Class 5 flexible copper conductor according to BS EN 60228 (previously BS 6360)
Insulation	Rubber Compound Type E14 according to BS EN 50363
Sheath	Rubber Compound Type EM3 according to BS EN 50363

Dimensions

No. of Cores	Nominal Cross Sectional Area mm²	Nominal Thickness of Insulation mm	Nominal Overall Diameter mm	Nominal Weight kg/km
2	0.75	0.6	6.1	53
2	1	0.6	6.6	64
2	1.5	0.8	7.8	95
2	2.5	0.9	9.2	140
2	4	1	10.8	180
3	0.75	0.6	6.6	65
3	1	0.6	7	77
3	1.5	0.8	8.4	115
3	2.5	0.9	9.9	170
3	4	1	11.7	240
3	6	1	13.3	320
4	0.75	0.6	7.3	80
4	1	0.6	7.6	95
4	1.5	0.8	9.4	145
4	2.5	0.9	11.1	210
4	4	1	13	300
4	6	1	14.5	405
5	0.75	0.6	8.1	100
5	1	0.6	8.4	115
5	1.5	0.8	10.3	170
5	2.5	0.9	12.4	255
5	4	1	14.5	355

Class 5 Flexible Copper Conductors for Single Core and Multi-Core Cables

Nominal Cross Sectional Area mm²	Maximum Diameter of Wires in Conductor mm	Maximum Resistance of Conductor At 20ºC
		Plain Wires ohms/km
0.75	0.21	26
1	0.21	19.5
1.5	0.26	13.3
2.5	0.26	7.98
4	0.31	4.95
6	0.31	3.3

Current Carrying Capacity and Mass Supportable

Nominal Cross Sectional Area mm²	Current Carrying Capacity		Maximum Mass Supportable By Twin Flexible Cable (See Regulations 522.7.2 and 559.6.1.5 of the 17th Edition of IEE Wiring Regulations) kg
	Single-Phase AC Amps	Three-Phase AC Amps
0.75	6	6	3
1	10	10	5
1.5	16	16	5
2.5	25	20	5
4	32	25	5

The table above is in accordance with Table 4F3A of the 17th Edition of IEE Wiring Regulations.

Voltage Drop

Nominal Cross Sectional Area mm²	DC or Single-Phase AC mV/A/m	Three-Phase AC mV/A/m
0.75	62	54
1	46	40
1.5	32	27
2.5	19	16
4	12	10

The table above is in accordance with Table 4F3B of the 17th Edition of IEE Wiring Regulations.

De-Rating Factor for Ambient Temperature 60°C Thermoplastic or Thermosetting Insulated Cords

Air Temperature °C	35	40	45	50	55
DE-RATING FACTOR	0.91	0.82	0.71	0.58	0.41

The table above is in accordance with Table 4F3A of the 17th Edition of IEE Wiring Regulations

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0361TQ BS EN 60332-1-2 BS 638 Black Welding Cable

Power Generation, Flexible Rubber Cables

Cable Construction

Conductor	16mm² to 95mm²: Class 6 extra flexible copper conductor according to BS EN 60228 (previously BS 6360) 120mm² and above: Class 5 flexible copper conductor
Insulation	EPR (Ethylene Propylene Rubber) Type GP4 according to BS 7655
Bedding	PET (Polyester Type)
Sheath	HOFR (Heat and Oil Resistant and Flame Retardant) Type EM5 according to BS EN 50363

Dimensions - Type 0361TQ - Plain Copper Conductors

Conductor Class	Nominal Cross Sectional Area mm²	Total Radial Thickness of Covering mm	Nominal Overall Diameter mm	Nominal Weight kg/km
6	16	2	9.7	215
6	25	2	11.2	305
6	35	2	12.4	400
6	50	2.2	14.3	587
6	70	2.4	16.3	775
6	95	2.6	18.6	1040
5	120	2.8	20.3	1256
5	150	3	22.6	1360
5	185	3.2	24.7	1875
5	240	3.4	27.8	2534

Class 6 Flexible Copper Conductors for Single Core and Multi-Core Cables

Nominal Cross Sectional Area mm²	Maximum Diameter of Wires in Conductor mm	Maximum Resistance of Conductor At 20ºC
		Plain Wires ohms/km
16	0.21	1.21
25	0.21	0.78
35	0.21	0.554
50	0.21	0.386
70	0.21	0.272
995	0.21	0.206

Class 5 Flexible Copper Conductors for Single Core and Multi-Core Cables

Nominal Cross Sectional Area mm²	Maximum Diameter of Wires in Conductor mm	Maximum Resistance of Conductor At 20ºC
		Plain Wires ohms/km
120	0.51	0.161
150	0.51	0.129
185	0.51	0.106
240	0.51	0.0817

Duty Cycle and Current carrying Capacity
The current carrying capacity of a welding depends on the length of the duty cycle. The duty cycle is the length of time in which a loaded current passes through the cable over an operation period time of 5 minutes, indicated as a percentage of that period. For example, if the current is flowing for the whole 5 minutes, the duty cycle is 100% and if the current is only flowing for 1 minute, the duty cycle is 20%.
As conductor temperature differs according to the in use as well as current, ratings displayed are given as a guide.
The permissible loading of the cable for duty cycles other than those displayed in the table can be calculated using the following formula:
I = I100 x √100/F

Where:
I = the maximum permissible loading current for the required duty cycle
I100 = the maximum permissible loading current for a duty cycle of 100%
F = the required duty cycle calculated as a percentage of the 5 minute operation period

Typical guidance values for different welding processes are as follows:
Fully Automatic Welding 100%
Semi-Automatic Welding 65-85%
Manual Welding 30-60%
Very Infrequent or Occasional Welding 20%

Current Carrying Capacity
The below table is in accordance with Table A.5 of BS 638 Part 4

Nominal Cross Sectional Area mm²	Current Rating for Single Cycle Operation Over a Maximum Period of 5 Minutes Amps
	100%	85%	60%	35%
16	135	145	175	230
25	180	195	230	300
35	225	245	290	375
50	285	305	365	480
70	355	385	460	600
95	430	470	560	730
120	500	540	650	850
150	580	630	750	980
185	665	720	860	1120
240	780	850	975	1250

De-Rating Factors
The below table is in accordance with Table A.7 of BS 638 Part 4

Ambient Temperature °C	25	30	35	40	45
DE-RATING FACTOR	1.0	0.96	0.91	0.87	0.82

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Our power cables have many accessories.

For more information, don’t hesitate to call us on 0121 508 6890 or get in touch via our Contact Page.

H07RN-F BS EN 50525-2-21 Flexible Rubber Cable

Our power cables have many accessories.

Coil End Lead Type 4 BS 6195 Cable

Our power cables have many accessories.

318-TRS / H05RR-F BS EN 50525-2-21 Cable

Our power cables have many accessories.

0361TQ BS EN 60332-1-2 BS 638 Black Welding Cable

Our power cables have many accessories.

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