TYPICAL OUTSIDE DIAMETER OF INSULATION

ON 600V INDUSTRIAL WIRE THHN, THWN, OR THWN-2 90C / 75C 600 Volt PVC Insulation with Nylon Outer Jacket

WIRE SIZE / STRANDING		Approx. Insulation Outside Diameter
AWG / kcmil	Strands	Dia mm	Dia Inches
14	solid	2.6	0.102
12	solid	3.02	0.118
10	solid	3.81	0.149
14	19	2.78	0.109
12	19	3.27	0.128
10	19	4.11	0.161
8	19	5.43	0.213
6	19	6.36	0.249
4	19	8.11	0.318
3	19	8.82	0.346
2	19	9.63	0.378
1	19	11.09	0.435
1/0	19	12.08	0.474
2/0	19	13.34	0.523
3/0	19	14.64	0.574
4/0	19	16.04	0.629
250	37	17.79	0.698
300	37	19.09	0.749
350	37	20.39	0.800
400	37	21.49	0.843
500	37	23.59	0.925
600	61	26.17	1.026
750	61	28.77	1.128
1000	61	32.57	1.277

ASTM D-2219 and D-2220

Conventional Wire Insulation Average Thickness and Minimum Thickness
Nominal Fractional - inches	Avg. Inch	Avg. mm	90% Min.Inch	90% Min.mm
1/64	0.016	0.397	0.014	0.357
2/64	0.031	0.794	0.028	0.715
3/64	0.047	1.191	0.042	1.072
4/64	0.063	1.588	0.056	1.429
5/64	0.078	1.984	0.070	1.786
6/64	0.094	2.381	0.084	2.143
7/64	0.109	2.778	0.084	2.143
8/64	0.125	3.175	0.113	2.858
9/64	0.141	3.572	0.127	3.215
10/64	0.156	3.969	0.141	3.572

Compiled by Advancement International Ltd. www.LugsDirect.com from published catalog and specification data.
Note: there are many variations in insulation type and thickness so best to check actual samples.

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