Wire gauge formula

To: Tesla List <tesla-at-poodle.pupman-dot-com>, Mike Matulik <matulik%d0tokensun-at-fnal.fnal.gov>, Mike Utes <Utes-at-fnal.gov>
Subject: Wire gauge formula
From: huffman <huffman-at-fnal.gov>
Date: Tue, 10 Dec 1996 09:13:37 -0600

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For what it's worth.
This is a handy formula to calculate wire gauge given the gauge number.

0.3248*exp(-0.1159*gauge)=wire diameter(inch)

This formula works for any gauge from (0 to 40) or larger although it was
only checked with the following table. Note for 00 gauge enter -1, for 000
enter -2 and 0000 -3.

Brown & Sharpe Wire Gauge (from CRC 53rd edition)
Gauge	Dia
0000	0.46	
000	0.4096	
00	0.3648	
0	0.3249	
1	0.2893	
2	0.2576	
3	0.2294	
4	0.2043	
5	0.1819	
6	0.162	
7	0.1443	
8	0.1285	
9	0.1144	
10	0.1019	
11	0.09074	
12	0.08081	
13	0.07196	
14	0.06408	
15	0.05707	
16	0.05082	
17	0.04526	
18	0.0403	
19	0.03589	
20	0.03196	
21	0.02846	
22	0.02535	
23	0.02257	
24	0.0201	
25	0.0179	
26	0.01594	
27	0.01419	
28	0.01264	
29	0.01126	
30	0.01003	
31	0.008928	
32	0.00795	
33	0.00708	
34	0.006304	
35	0.005614	
36	0.005	
37	0.004453	
38	0.003965	
39	0.003531	
40	0.003145