Dimension, In.	Area		Weight Per Ft in Lb.	DC Resistance at 20 C, Microhms/Ft.	30 C Rise		50 C Rise		65 C Rise
	Sq. In	Circ Mils Thousands			Skin Effect Ratio at 90 C	60 Hz Ampacity Amp*	Skin Effect Ratio at 90 C	60 Hz Ampacity Amp*	Skin Effect Ratio at 90 C	60 Hz Ampacity Amp*
1/16 x 1/2	.00312	39.7	.121	264.0	1.00	103	1.00	136	1.00	157
1/16 x 3/4	.0469	59.7	.181	175.0	1.00	145	1.00	193	1.00	225
1/16 x 1	.0625	79.6	.241	132	1.00	187	1.00	250	1.00	285
1/16 x 1 1/2	.0938	119	.362	87.7	1.00	270	1.00	355	1.00	410
1/16 x 2	.125	159	.483	65.8	1.01	345	1.01	460	1.01	530

1/8 x 1/2	.0625	79.6	.241	132	1.00	153	1.00	205	1.00	235
1/8 x 3/4	.0938	119	.362	87.7	1.00	215	1.00	285	1.00	325
1/8 x 1	.125	159	.483	65.8	1.01	270	1.01	360	1.01	415
1/8 x 1 1/2	.188	239	.726	43.8	1.01	385	1.01	510	1.01	590
1/8 x 2	.250	318	.966	32.9	1.02	495	1.02	660	1.02	760
1/8 x 2 1/2	.312	397	1.21	26.4	1.02	600	1.02	800	1.02	920
1/8 x 3	.375	477	1.45	21.9	1.03	710	1.03	940	1.03	1100
1/8 x 3 1/2	.438	558	1.69	18.8	1.04	810	1.03	1100	1.03	1250
1/8 x 4	.500	636	1.93	16.5	1.04	900	1.04	1200	1.04	1400

3/16 x 1/2	.0938	119	.362	87.7	1.00	195	1.00	260	1.00	300
3/16 x 3/4	.141	179	.545	58.4	1.01	270	1.01	360	1.01	415
3/16 x 1	.188	239	.726	43.8	1.01	340	1.01	455	1.01	520
3/16 x 1 1/2	.281	358	1.09	29.3	1.02	480	1.02	630	1.02	730
3/16 x 2	.375	477	1.45	21.9	1.03	610	1.03	810	1.03	940
3/16 x 2 1/2	.469	597	1.81	17.5	1.04	740	1.04	980	1.03	1150
3/16 x 3	.562	715	2.17	14.6	1.05	870	1.05	1150	1.04	1350
3/16 x 3 1/2	.656	835	2.53	12.5	1.07	990	1.06	1300	1.06	1500
3/16 x 4	.750	955	2.90	11.0	1.09	1100	1.08	1450	1.07	1700

1/4 x 1/2	.125	159	.483	65.8	1.01	240	1.01	315	1.01	360
1/4 x 3/4	.188	239	.726	43.8	1.01	320	1.01	425	1.01	490
1/4 x 1	.250	318	.966	32.9	1.02	400	1.02	530	1.02	620
1/4 x 1 1/2	.375	477	1.45	21.9	1.03	560	1.03	740	1.03	860
1/4 x 2	.500	637	1.93	16.5	1.04	710	1.04	940	1.04	1100
1/4 x 2 1/2	.625	796	2.41	13.2	1.06	850	1.06	1150	1.06	1300
1/4 x 3	.750	955	2.90	11.0	1.08	990	1.08	1300	1.07	1550
1/4 x 3 1/2	.875	1110	3.38	9.40	1.10	1150	1.09	1500	1.09	1750
1/4 x 4	1.00	1270	3.86	8.23	1.12	1250	1.11	1700	1.10	1950
1/4 x 5	1.25	1590	4.83	6.58	1.16	1500	1.15	2000	1.14	2350
1/4 x 6	1.50	1910	5.80	5.49	1.18	1750	1.17	2350	1.17	2700

3/8 x 3/4	.281	358	1.09	29.3	1.02	415	1.02	550	1.02	630
3/8 x 1	.375	477	1.45	21.9	1.03	510	1.03	680	1.03	790
3/8 x 1 1/2	.562	715	2.17	14.6	1.05	710	1.04	940	1.04	1100
3/8 x 2	.750	955	2.90	11.0	1.08	880	1.08	1150	1.07	1350
3/8 x 2 1/2	.938	1190	3.62	8.77	1.12	1050	1.10	1400	1.09	1600
3/8 x 3	1.12	1430	4.35	7.35	1.15	1200	1.14	1600	1.13	1850
3/8 x 3 1/2	1.31	1670	5.06	6.38	1.18	1350	1.16	1800	1.15	2100
3/8 x 4	1.50	1910	5.80	5.49	1.20	1500	1.19	2000	1.18	2350
3/8 x 5	1.88	2390	7.26	4.38	1.24	1800	1.23	2400	1.22	2800
3/8 x 6	2.25	2860	8.69	3.66	1.27	2100	1.26	2800	1.24	3250

1/2 x 1	.500	637	1.93	16.5	1.04	620	1.04	820	1.04	940
1/2 x 1 1/2	.750	955	2.90	11.0	1.08	830	1.08	1100	1.07	1250
1/2 x 2	1.00	1270	3.86	8.23	1.12	1000	1.11	1350	1.10	1550
1/2 x 2 1/2	1.25	1590	4.83	6.58	1.16	1200	1.15	1600	1.14	1850
1/2 x 3	1.50	1910	5.80	5.49	1.20	1400	1.19	1850	1.18	2150
1/2 x 3 1/2	1.75	2230	6.76	4.70	1.24	1550	1.22	2100	1.21	2400
1/2 x 4	2.00	2550	7.73	4.11	1.26	1700	1.25	2300	1.24	2650
1/2 x 5	2.50	3180	9.66	3.29	1.32	2050	1.30	2750	1.29	3150
1/2 x 6	3.00	3820	11.6	2.74	1.36	2400	1.34	3150	1.33	3650
1/2 x 8	4.00	5090	15.5	2.06	1.42	3000	1.40	4000	1.39	4600

* Applicable to typical in-service conditions (indoors, 40C ambient temperature), horizontal run on edge, and free from external magnetic influences.

Busbar Conductor Ampacity Tables

Action	Table	Table Name
You are here	#1	Ampacities of Copper Alloy 11000 Busbars
Ampacity Chart	#2	Quick Busbar Size Selector ( Bus Bar Ampacities )
Emissivity Chart	#3	Effect of Emissivity and Number of Busses on Ampacity