Nominal cross-section (mm²)	Electrical resistance at 20°C in C.C.  (Ohm/km)	Electrical resistance at 90°C en C.C. (Ohm/km)	Inductive reactance at 50Hz (Ohm/Km)	Current-carrying capacity of cables in free air at 40°C as per IEC 364-5-523. (1) (Amper)
1.5	13.3	16.96	0.126	19
2.5	7.98	10.18	0.118	26
4	4.95	6.31	0.112	34
6	3.3	4.21	0.105	45
10	1.91	2.44	0.103	62
16	1.21	1.54	0.098	83
25	0.78	0.99	0.097	122
35	0.554	0.707	0.095	152
50	0.386	0.493	0.094	187
70	0.272	0.348	0.091	241
95	0.206	0.264	0.090	295
120 (2)	0.161	0.207	0.088	346
150 (2)	0.129	0.167	0.088	381

(1) Cables installed in air at 40ºC according to IEC 364-5-523. These values can be taken as a reference for cables submerged or in contact with water in wells up to 100 meters deep. When it comes to depths greater than 100 meters, each particular case must be studied as to how the cable will be affected by the environment due to temperatures, liquids and other conditions that can impair the cable's conduction. For more information on allowable intensity values and types of installation, we suggest consulting the IEC 364-5-523 standard. (2) These sections are outside the scope of IRAM 63007.