ASTM B682-01(2009)

1.1 This specification covers and prescribes the recommended standard metric sizes of solid round electrical conductors.

1.2 This specification prescribes the recommended standard metric size designations of stranded electrical conductors (see Explanatory Note 1).

Note 1 - Physical properties, construction requirements, and manufacturing tolerances for specific products should be included in individual product specifications developed in accordance with appropriate sizes in this specification.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3.1 Exceptions - For conductor sizes designated by AWG or kcmil, the requirements in SI units have been numerically converted from corresponding values, stated or derived, in inch-pound units. For conductor sizes designated by SI units only, the requirements are stated or derived in SI units. Rounded values appear in Table 1.

TABLE 1 Standard Metric Diameters and Cross-Sectional Areas of Solid Round Wires at 20°C

Diameter		Cross-Sectional Area
mm (R 20 Series)	in.A	mm²	in.²A	kcmilA
18.0	0.708 7	254.5	0.394 4	502.2
16.0	0.629 9	201.1	0.311 6	396.8
14.0	0.551 8	153.9	0.238 6	303.8
12.5	0.492 1	122.7	0.190 2	242.2
11.2	0.440 9	98.52	0.152 7	194.4
10.0	0.393 7	78.54	0.121 7	155.0
9.00	0.354 3	63.62	0.098 61	125.6
8.00	0.315 0	50.27	0.077 91	99.2
7.10	0.279 5	39.59	0.061 37	78.14
6.30	0.248 0	31.17	0.048 32	61.52
5.60	0.220 5	24.63	0.038 18	48.61
5.00	0.196 9	19.63	0.030 43	38.75
4.50	0.177 2	15.90	0.024 65	31.39
4.00	0.157 5	12.57	0.019 48	24.80
3.55	0.139 8	9.898	0.015 34	19.53
3.15	0.124 0	7.793	0.012 08	15.38
2.80	0.110 2	6.158	0.009 54	12.15
2.50	0.098 4	4.909	0.007 61	9.69
2.24	0.088 2	3.941	0.006 11	7.78
2.00	0.078 7	3.142	0.004 87	6.20
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