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Voltage drop (50 Hz) Low Voltage

Page Voltage drop (50 Hz) Low Voltage

Voltage drop (50 Hz , mV/A/m) Low Voltage (0.6/1 kV) Armoured Cables PVC Insulated

Conductor size (mm2)	Copper Conductor				Aluminium Conductor
	Single-core 1)		2-core	3- or 4-core	Single-core 1)		2-core	3- or 4-core
	Trefoil	Flat 2)	2-core	3- or 4-core	Trefoil	Flat 2)	2-core	3- or 4-core
16			2.9	2.5			4.8	4.2
25			1.9	1.65			3.1	2.7
35			1.35	1.15			2.2	1.95
50	0.87	0.90	1.00	0.87	1.4	1.4	1.65	1.45
70	0.62	0.70	0.69	0.60	0.98	1.05	1.15	0.97
95	0.47	0.58	0.52	0.45	0.74	0.83	0.84	0.72
120	0.39	0.51	0.42	0.37	0.60	0.70		0.58
150	0.33	0.45	0.35	0.30	0.49	0.60		0.47
185	0.28	0.41	0.29	0.26	0.41	0.53		0.39
240	0.24	0.37	0.24	0.21	0.34	0.46		0.31
300	0.21	0.34	0.21	0.185	0.29	0.41		0.26
400	0.195	0.33	0.19	0.165
500	0.18	0.31
630	0.17	0.29
800	0.165	0.26
1000	0.155	0.24

XLPE Insulated

Conductor size (mm2)	Copper Conductor				Aluminium Conductor
	Single-core 1)		2-core	3- or 4-core	Single-core 1)		2-core	3- or 4-core
	Trefoil	Flat 2)	2-core	3- or 4-core	Trefoil	Flat 2)	2-core	3- or 4-core
16			2.8	2.4			4.5	3.9
25			1.75	1.5			2.9	2.5
35			1.25	1.1			2.1	1.8
50	0.82	0.86	0.94	0.81	1.35	1.35	1.55	1.35
70	0.58	0.68	0.65	0.57	0.93	1.00	1.05	0.92
95	0.45	0.57	0.50	0.43	0.70	0.80	0.79	0.68
120	0.37	0.50	0.41	0.35	0.57	0.68		0.55
150	0.32	0.45	0.34	0.29	0.47	0.58		0.44
185	0.27	0.41	0.29	0.25	0.39	0.51		0.37
240	0.23	0.37	0.24	0.21	0.32	0.44		0.30
300	0.21	0.34	0.21	0.185	0.27	0.40		0.25
400	0.195	0.32	0.185	0.16
500	0.18	0.30
630	0.17	0.28
800	0.16
1000	0.155

Note (1) : Data for aluminium wire armoured cables

Note (2) : Twice cable diameter spacing between cores