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

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