Conductor’s gauge (AWG)	Flexible class conductors. Electrical resistance at 20°C en D.C. (Ohm/km)		Flexible class conductors. Electrical resistance in C.C. at 75°C (Ohm/km)		Inductive reactance at 60Hz (Ohm/Km)					Current-carrying capacity (6)
					1 Conductor (1)	Unipolar (2)	Unipolar (3)	Multiconductor (4)	4 Conductors (5)
	1 Conductor	Multiconductor	1 Conductor	Multiconductor
14	8.6	8.77	10.46	10.67	0.174	0.226	0.156	0.133	0.141	20
12	5.41	5.52	6.58	6.71	0.163	0.215	0.145	0.124	0.132	25
10	3.41	3.48	4.15	4.23	0.152	0.204	0.135	0.115	0.124	35
8	2.14	2.19	2.61	2.66	0.149	0.201	0.132	0.117	0.125	50
6	1.37	1.4	1.67	1.7	0.139	0.191	0.121	0.108	0.117	65
4	0.863	0.88	1.05	1.07	0.132	0.184	0.114	0.102	0.111	85
2	0.545	0.556	0.663	0.677	0.126	0.178	0.108	0.098	0.107	115
1	0.43	0.439	0.524	0.534	0.132	0.184	0.114	0.102	0.11	130
1/0	0.344	0.351	0.419	0.428	0.128	0.18	0.11	0.098	0.107	150
2/0	0.274	0.279	0.334	0.341	0.124	0.176	0.106	0.096	0.104	175
3/0	0.217	0.221	0.266	0.271	0.12	0.172	0.103	0.093	0.102	200
4/0	0.172	0.175	0.211	0.215	0.121	0.173	0.104	0.091	0.1	230
250	0.147	0.15	0.181	0.185	0.122	0.174	0.104	0.093	0.101	255
300	0.123	0.125	0.153	0.156	0.119	0.171	0.101	0.091	0.099	285
350	0.105	0.107	0.131	0.134	0.117	0.17	0.1	0.09	0.098	310
400	0.0919	0.0937	0.116	0.118	0.116	0.168	0.098	0.089	0.097	335
450	0.0817	0.0833	0.104	0.106	0.114	0.166	0.096	0.087	0.096	355
500	0.0735	0.075	0.0945	0.0964	0.113	0.165	0.095	0.087	0.095	380

(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, three-conductor, and five-conductor cables. (5) Calculation of Inductive reactance valid for four-conductor cables. (6) Current-carrying capacity of cables with up to three conductors, installed in ducts or directly buried, up to an ambient temperature of 30ºC, according to chart 310.15 (B)(16) of the NFPA 70. As from four-conductors, we’ve additionally applied the correction factor for more than three conductors from the chart 310.15 (B)(3)(a) of the NFPA70.