series XF

Nominal cross-section (mm²)	Electrical resistance in D.C. at 20°C (Ohm/km)	Electrical resistance in C.C. at 90°C (Ohm/km)	Inductive reactance at 50Hz (Ohm/Km)
			1 Conductor (1)	1 Conductor (2)	1 Conductor (3)	Multiconductor (4)	4 Conductors (5)
1	19.5	24.86	0.167	0.21	0.152	0.107	0.114
1.5	13.3	16.96	0.157	0.2	0.142	0.1	0.107
2.5	7.98	10.18	0.145	0.189	0.131	0.093	0.1
4	4.95	6.31	0.137	0.18	0.122	0.088	0.095
6	3.3	4.21	0.128	0.172	0.113	0.083	0.09
10	1.91	2.44	0.118	0.162	0.104	0.078	0.085
16	1.21	1.54	0.112	0.155	0.097	0.075	0.082
25	0.78	0.99	0.109	0.152	0.094	0.075	0.083
35	0.554	0.707	0.105	0.148	0.09	0.073	0.081
50	0.386	0.493	0.102	0.145	0.087	0.073	0.08
70	0.272	0.348	0.098	0.142	0.084	0.071	0.079
95	0.206	0.264	0.096	0.139	0.081	0.07	0.077
120	0.161	0.207	0.095	0.138	0.08	0.07	0.077
150	0.129	0.167	0.094	0.137	0.079	0.07	0.077
185	0.106	0.138	0.094	0.137	0.079	0.07	0.077
240	0.0801	0.106	0.092	0.136	0.077	0.069	0.077
300	0.0641	0.086	0.091	0.135	0.076	0.069	0.076
400	0.0486	0.0675	0.09	0.134	0.076	--	--
500	0.0384	0.0557	0.09	0.133	0.075	--	--
630	0.0287	0.0451	0.086	0.13	0.072	--	--

(1) Three single conductor cables displayed in flat, in contact with each other. (2) Three single conductor cables displayed in flat, separated by 1 diameter between each other. (3) Three single-conductor cables displayed in a trefoil in contact with each other. (4) Calculation of Inductive reactance valid for two-conductor and three conductor cables. (5) Calculation of Inductive reactance valid for four-conductor cables.

Nominal cross-section (mm²)	Current-carrying capacity of cables in free air at 40°C as per IEC 364-5-523.Single-conductors cable up to 16mm² in contact with each other, displayed in unperforated trays, remaining cross-sections, single-conductors displays and formations in cable ladder or perforated cable trays (Ampere)					Current-carrying capacity of cables directly buried at 25°C soil temperature and soil thermal resistance of 1 km/W as per IEC 364-5-523 (Ampere)
	1 Conductor (1)	1 Conductor (2)	1 Conductor (3)	2 Conductors	Multiconductor (4)	1 Conductor (1)	1 Conductor (2)	2 Conductors	Multiconductor (4)
1	--	--	--	--	--	--	--	--	--
1.5	19	--	--	23	20	32	35	32	28
2.5	26	--	--	31	28	43	46	44	37
4	34	--	--	43	36	55	59	57	48
6	45	--	--	54	47	69	74	72	61
10	62	--	--	74	65	93	100	97	83
16	83	--	--	100	86	121	129	129	107
25	122	158	117	128	109	157	168	166	141
35	152	196	146	160	137	188	201	200	168
50	187	238	179	195	166	220	236	238	199
70	241	305	232	250	213	271	290	292	243
95	295	371	283	304	257	326	349	351	293
120	346	432	332	354	299	371	396	399	333
150	401	499	384	409	345	415	444	448	373
185	461	572	441	468	394	470	503	508	425
240	548	675	524	554	465	547	586	592	493
300	637	780	608	640	537	621	665	669	559
400	751	938	712	--	--	710	759	--	--
500	863	1083	818	--	--	825	882	--	--
630	995	1257	941	--	--	941	1007	--	--

(1) Three single conductor cables displayed in flat, in contact with each other. (2) Three single conductor cables displayed in flat, separated by 1 diameter between each other. (3) Three single-conductor cables displayed in a trefoil in contact with each other. (4) The values of current-carrying capacity informed, correspond to three-conductor, four-conductor.