Current Rating & Voltage drop for cables & wires Upto and Including 600/1000V

Two Core Copper, PVC Insulated, Armoured /Unarmoured Cables;

Nominal Area of Conductor	In Air				In Ground		In Duct		Voltage drop
	Unarmoured		Armoured		Armoured		Armoured		Voltage drop
	at 70^oC	at 85^oC	at 70^oC	at 85^oC	at 70^oC	at 85^oC	at 70^oC	at 85^oC	at 70^oC	at 85^oC
Sqmm	A				A		A		V/A/Km	V/A/Km
1.5	22	26	22	26	31	35	25	28	30.4	30.4
2.5	31	36	31	36	39	44	32	36	18.6	18.6
4	41	48	41	48	52	59	43	49	11.6	11.6
6	52	61	53	62	65	74	55	63	7.7	7.7
10	67	79	73	86	88	100	73	83	4.6	4.6
16	91	104	95	109	113	126	93	103	2.8	2.9
25	122	140	127	145	150	167	123	137	1.75	1.83
35	150	172	155	177	181	201	146	162	1.26	1.33
50	182	209	189	217	214	238	174	193	0.94	0.99
70	228	261	237	271	264	294	214	239	0.66	0.69
95	283	324	293	336	317	353	258	287	0.49	0.51
120	329	377	337	386	359	400	294	328	0.40	0.41
150	377	429	384	437	402	445	330	365	0.34	0.35
185	435	500	444	510	455	508	374	416	0.28	0.29
240	518	594	524	601	525	585	433	483	0.24	0.24
300	596	684	596	684	587	655	486	541	0.21	0.21
400	693	796	683	784	659	736	546	608	0.19	0.19

Installation conditions for above Rating:

Maximum Conductor Temp. for PVC Type 5 Insulation 85^oC

Maximum Conductor Temp. for PVC TI1/Type A Insulation 70^oC

Ambient Air Temperature 30^oC

Ground Temperature 20^oC

Depth of Laying 0.5m

Thermal Resitivity of soil 1.2 K.m/w