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Wire Gauge Conversion Chart

Total current draw in Amperes	6 Volt	12 Volt	18 Volt	24 Volt
0-10 A	24 ga	18 ga	14 ga	14 ga
10-20 A	18 ga	14 ga	12 ga	12 ga
21-35 A	14 ga	12 ga	10 ga	8 ga
36-50 A	12 ga	10 ga	8 ga	8 ga
51-65 A	10 ga	8 ga	8 ga	6 ga
66-85 A	8 ga	6 ga	6 ga	4 ga

Recommended current (amp) and Gauge for different voltages.

Copper Wire
Gauge	Dia in (mm)	Wt oz/ft (g/m)	Ohms/m	Imax >2 min	Imax <30sec
16	0.051 (1.29)	0.13 (11.64)	0.013	14	20
18	0.040 (1.02)	0.08 (7.32)	0.021	10	16
20	0.032 (0.81)	0.05 (4.60)	0.033	7	10
22	0.025 (0.65)	0.03 (2.90)	0.053	5	8
24	0.020 (0.51)	0.02 (1.80)	0.084	3.5	5
26	0.016 (0.40)	0.012 (1.15)	0.134	1.5	3
28	0.013 (0.32)	0.008 (0.72)	0.213	1	1.5
30	0.010 (0.25)	0.005 (0.45)	0.339	0.5	1
32	0.008 (0.20)	0.003 (0.29)	0.539
34	0.006 (0.16)	0.002 (0.18)	0.856
36	0.005 (0.13)	0.001 (0.11)	1.36
38	0.004 (0.10)	0.0008 (0.07)	2.16

SWG = Imperial Standard Wire Gauge
AWG = American Wire Gauge
B&S = Brown & Sharpe

S.W.G.	Wire Number	A.W.G. or B&S	A.W.G. Metric
(Inches)	(Gauge)	(Inches)	(MM)
0.500	0000000 (7/0)	.......................	............
0.464	000000 (6/0)	0.580000	............
0.432	00000 (5/0)	0.516500	............
0.400	0000 (4/0)	0.460000	11,684
0.372	000 (3/0)	0.409642	10,404
0.348	00 (2/0)	0.364796	9,266
0.324	0 (1/0)	0.324861	8,252
0.300	1	0.289297	7,348
0.276	2	0.257627	6,543
0.252	3	0.229423	5,827
0.232	4	0.2043	5,189
0.2120	5	0.1819	4,621
0.1920	6	0.1620	4,115
0.1760	7	0.1443	3,665
0.1600	8	0.1285	3,264
0.1440	9	0.1144	2,906
0.1280	10	0.1019	2,588
0.1160	11	0.0907	2,304
0.1040	12	0.0808	2,052
S.W.G.	Wire Number	A.W.G. or B&S	A.W.G. Metric
0.0920	13	0.0720	1,829
0.0800	14	0.0641	1,628
0.0720	15	0.0571	1,450
0.0640	16	0.0508	1,291
0.0560	17	0.0453	1,150
0.0480	18	0.0403	1,024
0.0400	19	0.0359	0,9119
0.0360	20	0.0320	0,8128
0.0320	21	0.0285	0,7239
0.0280	22	0.0253	0,6426
0.0240	23	0.0226	0,5740
0.0220	24	0.0201	0,5106
0.0200	25	0.0179	0,4547
0.0180	26	0.0159	0,4038
0.0164	27	0.0142	0,3606
0.0148	28	0.0126	0,3200
0.0136	29	0.0113	0,2870
0.0124	30	0.0100	0,2540
0.0116	31	0.0089	0,2261
0.0108	32	0.0080	0,2032
0.0100	33	0.0071	0,1803
S.W.G.	Wire Number	A.W.G. or B&S	A.W.G. Metric
0.0092	34	0.0063	0,1601
0.0084	35	0.0056	0,1422
0.0076	36	0.0050	0,1270
0.0068	37	0.0045	0,1143
0.0060	38	0.0040	0,1016
0.0052	39	0.0035	0,0889
0.0048	40	0.0031	0,0787
0.0044	41	0.0028	0,0711
0.0040	42	0.0025	0,0635
0.0036	43	0.0022	0,0559
0.0032	44	0.0020	0,0508
0.0028	45	0.0018	0,0457
0.0024	46	0.0016	0,0406
0.0020	47	0.0014	0,0350
0.0016	48	0.0012	0.0305
0.0012	49	0.0011	0,0279
0.0010	50	0.0010	0,0254
	51	0.00088	0,0224
	52	0.00078	0,0198
	53	0.00070	0,0178
	54	0.00062	0,0158
	55	0.00055	0,0140
	56	0.00049	0,0124