Technical Data for Copper Magnet Wire by Size acc. to NEMA MW 1000 C

Technical Data for NEMA MW1000 (in Inches) for 58.0 AWG - 24.0 AWG

58.0AWG - 46.5AWG

Nominal Diameter	Bare Copper						Single Build				Heavy Build				Triple Build				Nominal Diameter	Area	Single Build					Recommended Winding Tensions	Elong.	Nominal Diameter
	Diameters			Resistance (Ohms/1000Ft.) **			Minimum Increase	Overall Diameter			Minimum Increase	Overall Diameter			Minimum Increase	Overall Diameter					Lbs./ 1000Ft	Ft/lb	Ohm/lb or /gram *	Wires/Sq.ln	Ohm/Cu. ln.

	min	nom	max	min	nom	max		min	nom	max		min	nom	max		min	nom	max		nom	nom	nom	nom	nom	nom
[AWG]	[inch]	[inch]	[inch]	[Ohm/1000ft]	[Ohm/1000ft]	[Ohm/1000ft]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[AWG]	[mils]						[g]	[%]	[AWG]

58.0	0.000375	0.000390	0.000407	62.570	68.011	73.452	0.00004	0.000416	0.000462	0.000507									58.0	0.152	0.00049	2,040,800	306,390	4,726,276		0.6	7	58.0
57.0	0.00042	0.000438	0.000457	49.735	54.060	58.385	0.00004	0.000461	0.000509	0.000557									57.0	0.192	0.000611	1,636,700	195,160	4,000,000		0.8	8	57.0
56.0	0.00047	0.00049	0.00051	39.73	43.19	46.65	0.00005	0.00052	0.00059	0.00065	0.0001	0.00060	0.00071	0.00081					56.0	0.24	0.00078	1,283,700	122,360	2,837,025	10,339,461	1	9	56.0
55.0	0.00053	0.00055	0.00057	31.54	34.28	37.02	0.00005	0.00058	0.00064	0.00070	0.0001	0.00066	0.00077	0.00087					55.0	0.303	0.00097	1,032,000	77,920	2,439,844	6,974,283	1.5	10	55.0
54.0	0.00060	0.00062	0.00065	24.82	26.98	29.14	0.00005	0.00065	0.00070	0.00075	0.0001	0.00073	0.00084	0.00095					54.0	0.384	0.00121	826,400	49,130	2,042,041	4,588,435	2	11	54.0
53.0	0.00067	0.00070	0.00073	19.48	21.17	22.86	0.00005	0.00072	0.00079	0.00085	0.0001	0.00080	0.00092	0.00103					53.0	0.490	0.00153	653,600	30,510	1,602,756	2,826,737	2.5	12	53.0
52.0	0.00075	0.00078	0.00081	15.69	17.05	18.41	0.0001	0.00085	0.00093	0.00100	0.0002	0.00095	0.00105	0.00115					52.0	0.608	0.00196	510,200	19,180	1,155,625	1,642,711	3	14	52.0
51.0	0.00085	0.00088	0.00092	12.320	13.390	14.460	0.0001	0.00095	0.00103	0.00110	0.0002	0.00105	0.00117	0.00129					51.0	0.775	0.00246	406,500	11,960	942,841	1,051,779	4	15	51.0
50.0	0.00095	0.00099	0.00103	9.734	10.580	11.430	0.0001	0.00105	0.00113	0.00120	0.0002	0.00115	0.00128	0.00140					50.0	0.98	0.00308	324,700	7,560	783,225	690,474	5	16	50.0
49.5	0.00101	0.00105	0.00109	8.720	9.386	10.371	0.0001	0.00110	0.00118	0.00126	0.0002	0.00121	0.00132	0.00143					49.5	1.10	0.00334	299,400	6,195	718,184	561,740	6	15	49.5
49.0	0.00107	0.00111	0.00116	7.744	8.417	9.090	0.0001	0.00117	0.00124	0.00130	0.0002	0.00127	0.00139	0.00150					49.0	1.23	0.00385	259,700	4,810	649,636	456,176	7	17	49.0
48.5	0.00113	0.00117	0.00122	7.008	7.585	8.123	0.0001	0.00123	0.00131	0.00141	0.0002	0.00133	0.00144	0.00155					48.5	1.37	0.00414	241,500	4,039	582,717	368,325	8	16	48.5
48.0	0.00119	0.00124	0.00129	6.205	6.745	7.285	0.0001	0.00129	0.00140	0.00150	0.0002	0.00139	0.00155	0.00170					48.0	1.54	0.00487	205,300	3,050	509,796	286,777	9	18	48.0
47.5	0.00127	0.00132	0.00137	5.525	5.962	6.453	0.0001	0.00137	0.00150	0.00161	0.0003	0.00157	0.00169	0.00181					47.5	1.74	0.00527	189,700	2,494	444,444	220,815	10	18	47.5
47.0	0.00135	0.00140	0.00146	4.868	5.291	5.714	0.0001	0.00145	0.00158	0.00170	0.0003	0.00165	0.00178	0.00190					47.0	1.96	0.00604	165,600	1,930	400,689	176,621	11	19	47.0
46.5	0.00142	0.00148	0.00154	4.377	4.733	5.134	0.0002	0.00162	0.00177	0.00191	0.0003	0.00172	0.00186	0.00200	0.0005	0.00192	0.00212	0.00231	46.5	2.19	0.00663	150,800	1,573	371,802	146,645	12	20	46.5

46.0AWG - 38.5AWG

Nominal Diameter	Bare Copper						Single Build				Heavy Build				Triple Build				Nominal Diameter	Area	Single Build					Recommended Winding Tensions	Elong.	Nominal Diameter
	Diameters			Resistance (Ohms/1000Ft.) **			Minimum Increase	Overall Diameter			Minimum Increase	Overall Diameter			Minimum Increase	Overall Diameter					Lbs./ 1000Ft	Ft/lb	Ohm/lb or /gram *	Wires/Sq.ln	Ohm/Cu. ln.

	min	nom	max	min	nom	max		min	nom	max		min	nom	max		min	nom	max		nom	nom	nom	nom	nom	nom
[AWG]	[inch]	[inch]	[inch]	[Ohm/1000ft]	[Ohm/1000ft]	[Ohm/1000ft]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[AWG]	[mils]						[g]	[%]	[AWG]

46.0	0.00151	0.00157	0.00164	3.870	4.207	4.544	0.0002	0.00171	0.00186	0.00200	0.0003	0.00181	0.00196	0.00210	0.0005	0.00201	0.00221	0.0024	46.0	2.47	0.00768	130,200	1,210	334,084	117,138	14	20	46.0
45.5	0.00160	0.00166	0.00173	3.472	3.757	4.099	0.0002	0.00180	0.00195	0.00210	0.0004	0.00200	0.00210	0.00220	0.0005	0.00210	0.00230	0.0025	45.5	2.76	0.00834	119,900	993	301,896	94,519	15	20	45.5
45.0	0.00169	0.00176	0.00183	3.080	3.348	3.616	0.0002	0.00189	0.00205	0.00220	0.0004	0.00209	0.00225	0.0024	0.0005	0.00219	0.00245	0.0027	45.0	3.10	0.00965	103,600	746	271,441	75,683	17	20	45.0
44.5	0.0018	0.0019	0.0020	2,451	2,871	3,201	0.0002	0.0020	0.0022	0.0023	0.0004	0.0022	0.0024	0.0025	0.0006	0.0024	0.0026	0.0028	44.5	3.61	0.01130	88,308	253,696	226,757	54,287	19	20	44.5
44.0	0.0019	0.0020	0.0021	2,305	2,589	2,873	0.0002	0.0021	0.0023	0.0024	0.0004	0.0023	0.0025	0.0026	0.0006	0.0025	0.0027	0.0029	44.0	4,00	0.01250	79,798	206,897	206,611	44,641	22	21	44.0
43.5	0.0020	0.0021	0.0022	2,100	2,346	2,593	0.0002	0.0022	0.0024	0.0025	0.0004	0.0024	0.0026	0.0028	0.0006	0.0026	0.0029	0.0031	43.5	4.41	0.01380	72,462	170,408	189,035	37,046	24	21	43.5
43.0	0.0021	0.0022	0.0023	1,922	2,137	2,352	0.0002	0.0023	0.0025	0.0027	0.0004	0.0025	0.0027	0.0029	0.0006	0.0027	0.0030	0.0032	43.0	4.84	0.01510	66,092	141,619	176,611	31,536	26	22	43.0
42.5	0.0023	0.0024	0.0025	1,626	1,793	1,960	0.0002	0.0025	0.0027	0.0028	0.0005	0.0028	0.0030	0.0031	0.0007	0.0030	0.0032	0.0034	42.5	5.76	0.01800	55,635	100,172	147,928	22,195	30	23	42.5
42.0	0.0024	0.0025	0.0026	1,504	1,652	1,801	0.0002	0.0026	0.0028	0.0030	0.0005	0.0029	0.0031	0.0033	0.0007	0.0031	0.0034	0.0036	42.0	6.25	0.01950	51,313	85,147	127,551	17,638	34	24	42.0
41.5	0.0025	0.0026	0.0027	1,394	1,527	1,659	0.0002	0.0027	0.0030	0.0032	0.0005	0.0030	0.0033	0.0035	0.0007	0.0032	0.0035	0.0038	41.5	6.76	0.02120	47,181	72,384	113,906	15,202	38	25	41.5
41.0	0.0027	0.0028	0.0029	1,209	1,316	1,423	0.0003	0.0030	0.0032	0.0033	0.0005	0.0032	0.0035	0.0037	0.0008	0.0035	0.0038	0.0040	41.0	7.84	0.02460	40,718	53,863	104,058	11,470	42	25	41.0
40.5	0.0029	0.0030	0.0031	1,058	1,145	1,233	0.0003	0.0032	0.0034	0.0035	0.0005	0.0034	0.0037	0.0039	0.0008	0.0037	0.0040	0.0042	40.5	9,00	0.02830	35,361	40,748	86,505	8,306	47	27	40.5
40.0	0.0030	0.0031	0.0032	992.7	1,073	1,152	0.0003	0.0033	0.0035	0.0037	0.0005	0.0035	0.0038	0.0041	0.0008	0.0038	0.0041	0.0044	40.0	9.61	0.03010	33,217	35,847	81,630	7.341	52	29	40.0
39.5	0.0032	0.0033	0.0034	879.3	946.1	1,013	0.0003	0.0035	0.0037	0.0039	0.0006	0.0038	0.0041	0.0043	0.0009	0.0041	0.0044	0.0047	39.5	10.89	0.0341	29,295	27,899	73,046	5,797	58	30	39.5
39.0	0.0034	0.0035	0.0036	784.3	840.7	897.1	0.0003	0.0037	0.0040	0.0042	0.0006	0.0040	0.0043	0.0045	0.0009	0.0043	0.0046	0.0049	39.0	12.25	0.0384	26,058	22,061	65,746	4,638	64	30	39.0
38.5	0.0036	0.0037	0.0038	703.9	752.1	800.2	0.0003	0.0039	0.0042	0.0044	0.0006	0.0042	0.0045	0.0048	0.0010	0.0046	0.0049	0.0052	38.5	13.69	0.0430	23,261	17,622	59,488	3,756	72	31	38.5

38.0AWG - 30.5AWG

Nominal Diameter	Bare Copper						Single Build				Heavy Build				Triple Build				Nominal Diameter	Area	Single Build					Recommended Winding Tensions	Elong.	Nominal Diameter
	Diameters			Resistance (Ohms/1000Ft.) **			Minimum Increase	Overall Diameter			Minimum Increase	Overall Diameter			Minimum Increase	Overall Diameter					Lbs./ 1000Ft	Ft/lb	Ohm/lb or /gram *	Wires/Sq.ln	Ohm/Cu. ln.

	min	nom	max	min	nom	max		min	nom	max		min	nom	max		min	nom	max		nom	nom	nom	nom	nom	nom
[AWG]	[inch]	[inch]	[inch]	[Ohm/1000ft]	[Ohm/1000ft]	[Ohm/1000ft]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[AWG]	[mils]						[g]	[%]	[AWG]

38.0	0.0039	0.0040	0.0041	604.7	643.3	681.9	0.0003	0.0042	0.0045	0.0047	0.0007	0.0046	0.0049	0.0051	0.0010	0.0049	0.0052	0.0055	38.0	16,00	0.0501	19,952	12,933	51,562	2,785	81	31	38.0
37.5	0.0041	0.0042	0.0043	549.8	583.4	617,0	0.0003	0.0044	0.0047	0.0049	0.0007	0.0048	0.0051	0.0054	0.0010	0.0051	0.0055	0.0058	37.5	17.64	0.0544	18,038	10,605	45,269	2,218	90	32	37.5
37.0	0.0044	0.0045	0.0046	480.4	508,0	535.7	0.0004	0.0048	0.0050	0.0052	0.0007	0.0051	0.0054	0.0057	0.0011	0.0055	0.0058	0.0061	37.0	20.25	0.0633	15,798	8,091	40,000	1,707	100	32	37.0
36.5	0.0046	0.0047	0.0048	441.2	465.7	490.1	0.0004	0.0050	0.0053	0.0055	0.0007	0.0053	0.0057	0.0060	0.0011	0.0058	0.0061	0.0064	36.5	22.09	0.0692	14,445	6,782	36,982	1,447	110	33	36.5
36.0	0.0049	0.0050	0.0051	390.8	411.4	431.9	0.0004	0.0053	0.0056	0.0058	0.0008	0.0057	0.0060	0.0063	0.0012	0.0061	0.0064	0.0067	36.0	25,00	0.0783	12,772	5,298	33,057	1,142	120	33	36.0
35.5	0.0052	0.0053	0.0054	348.6	366.1	383.5	0.0004	0.0056	0.0059	0.0061	0.0008	0.0060	0.0063	0.0066	0.0013	0.0065	0.0068	0.0071	35.5	28.09	0.0878	11,390	4,205	29,726	914.600	133	34	35.5
35.0	0.0055	0.0056	0.0057	312.9	327.9	342.8	0.0004	0.0059	0.0062	0.0065	0.0009	0.0064	0.0067	0.0070	0.0013	0.0068	0.0072	0.0075	35.0	31.36	0.0979	10,213	3,377	26,014	716.900	147	34	35.0
34.5	0.0058	0.0059	0.0060	282.4	295.3	308.3	0.0004	0.0062	0.0065	0.0068	0.0009	0.0067	0.0071	0.0074	0.0013	0.0071	0.0075	0.0079	34.5	34.81	0.1090	9,185	2,737	23,668	587.600	165	34	34.5
34.0	0.0062	0.0063	0.0064	248.2	259,0	269.8	0.0005	0.0067	0.0070	0.0072	0.0009	0.0071	0.0075	0.0078	0.0014	0.0076	0.0080	0.0083	34.0	39.69	0.1240	8,086	2,108	21,003	457.300	182	35	34.0
33.5	0.0066	0.0067	0.0068	219.8	229,0	238.1	0.0005	0.0071	0.0074	0.0076	0.0010	0.0076	0.0080	0.0083	0.0015	0.0081	0.0084	0.0087	33.5	44.89	0.1400	7,124	1,646	18,261	351.500	200	35	33.5
33.0	0.0070	0.0071	0.0072	196.1	203.9	211.7	0.0005	0.0075	0.0078	0.0081	0.0010	0.0080	0.0084	0.0087	0.0015	0.0085	0.0089	0.0092	33.0	50.41	0.1570	6,352	1,307	16,436	281.700	225	37	33.0
32.5	0.0074	0.0075	0.0076	176,0	182.7	189.4	0.0005	0.0079	0.0082	0.0085	0.0011	0.0085	0.0089	0.0092	0.0016	0.0090	0.0094	0.0097	32.5	56.25	0.1760	5,686	1,048	14,515	223,000	245	37	32.5
32.0	0.0079	0.0080	0.0081	154.9	160.6	166.2	0.0006	0.0085	0.0088	0.0090	0.0011	0.0090	0.0094	0.0097	0.0017	0.0096	0.0099	0.0102	32.0	64,00	0.2000	5,003	810.700	12,913	174.300	270	37	32.0
31.5	0.0083	0.0084	0.0085	140.70	145.60	150.50	0.0006	0.0089	0.0092	0.0095	0.0012	0.0095	0.0099	0.0103	0.0017	0.0101	0.0105	0.0108	31.5	70.56	0.220	4,547	668.30	11,814	144.70	290	39	31.5
31.0	0.0088	0.0089	0.0090	125.50	129.70	133.90	0.0006	0.0094	0.0097	0.0100	0.0012	0.0100	0.0104	0.0108	0.0018	0.0106	0.0110	0.0114	31.0	79.21	0.247	4,054	530.80	10,628	115.90	315	39	31.0
30.5	0.0094	0.0095	0.0096	110.30	113.80	117.40	0.0006	0.0100	0.0103	0.0106	0.0013	0.0107	0.0111	0.0114	0.0019	0.0113	0.0117	0.0120	30.5	90.25	0.281	3,555	408.50	9,245	88.52	355	39	30.5

30.0AWG - 24.0AWG

Nominal Diameter	Bare Copper						Single Build				Heavy Build				Triple Build				Nominal Diameter	Area	Single Build					Recommended Winding Tensions	Elong.	Nominal Diameter
	Diameters			Resistance (Ohms/1000Ft.) **			Minimum Increase	Overall Diameter			Minimum Increase	Overall Diameter			Minimum Increase	Overall Diameter					Lbs./ 1000Ft	Ft/lb	Ohm/lb or /gram *	Wires/Sq.ln	Ohm/Cu. ln.

	min	nom	max	min	nom	max		min	nom	max		min	nom	max		min	nom	max		nom	nom	nom	nom	nom	nom
[AWG]	[inch]	[inch]	[inch]	[Ohm/1000ft]	[Ohm/1000ft]	[Ohm/1000ft]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[inch]	[AWG]	[mils]						[g]	[%]	[AWG]

30.0	0.0099	0.0100	0.0101	99.65	102.70	105.80	0.0007	0.0106	0.0109	0.0112	0.0013	0.0112	0.0116	0.0121	0.0020	0.0119	0.0123	0.0126	30.0	100	0.311	3,212	333.11	8,416	72.73	400	40	30.0
29.5	0.0105	0.0106	0.0107	88.79	91.43	94.07	0.0007	0.0112	0.0115	0.0118	0.0014	0.0119	0.0123	0.0126	0.0022	0.0127	0.0131	0.0133	29.5	112	0.350	2,859	263.89	7,431	57.16	470	40	29.5
29.0	0.0112	0.0113	0.0114	78.22	80.45	82.68	0.0007	0.0119	0.0123	0.0126	0.0015	0.0127	0.0130	0.0133	0.0022	0.0134	0.0138	0.0141	29.0	128	0.397	2,520	204.69	6,610	44.74	540	40	29.0
28.5	0.0118	0.0119	0.0120	70.59	72.54	74.48	0.0008	0.0126	0.0129	0.0132	0.0015	0.0133	0.0137	0.0140	0.0023	0.0141	0.0145	0.0147	28.5	142	0.441	2,269	166.21	5,917	36.11	585	40	28.5
28.0	0.0125	0.0126	0.0127	63.02	64.70	66.37	0.0008	0.0133	0.0137	0.0140	0.0016	0.0141	0.0144	0.0147	0.0023	0.0148	0.0152	0.0155	28.0	159	0.493	2,027	132.44	5,328	29,00	630	40	28.0
27.5	0.0133	0.0134	0.0135	55.78	57.20	58.63	0.0008	0.0141	0.0145	0.0148	0.0016	0.0149	0.0153	0.0156	0.0024	0.0157	0.0161	0.0164	27.5	180	0.557	1,795	103.70	4,756	22.89	700	41	27.5
27.0	0.0141	0.0142	0.0143	49.71	50.94	52.17	0.0008	0.0149	0.0153	0.0156	0.0016	0.0157	0.0161	0.0165	0.0025	0.0166	0.0170	0.0173	27.0	202	0.625	1,601	82.351	4,272	18.31	770	41	27.0
26.5	0.0149	0.015	0.0151	44.58	45.65	46.71	0.0008	0.0157	0.0161	0.0165	0.0017	0.0166	0.0170	0.0173	0.0025	0.0174	0.0178	0.0182	26.5	225	0.697	1,434	66.081	3,810	14.63	860	41	26.5
26.0	0.0157	0.0159	0.0160	39.71	40.89	42.07	0.0009	0.0166	0.0170	0.0173	0.0017	0.0174	0.0178	0.0182	0.0026	0.0183	0.0187	0.0191	26.0	253	0.781	1,280	52.52	3,460	11.82	950	42	26.0
25.5	0.0167	0.0169	0.0170	35.17	36.18	37.19	0.0009	0.0176	0.0180	0.0184	0.0018	0.0185	0.0189	0.0193	0.0027	0.0194	0.0198	0.0202	25.5	286	0.882	1,134	41.162	3,086	9.338	1,060	42	25.5
25.0	0.0177	0.0179	0.0180	31.37	32.24	33.10	0.0009	0.0186	0.0190	0.0194	0.0018	0.0195	0.0199	0.0203	0.0027	0.0204	0.0208	0.0212	25.0	320	0.988	1,012	32.744	2,770	7.472	1,175	42	25.0
24.5	0.0188	0.0190	0.0191	27.86	28.60	29.34	0.0009	0.0197	0.0202	0.0206	0.0019	0.0207	0.0212	0.0215	0.0028	0.0215	0.0220	0.0224	24.5	361	1.114	897.400	25.781	2,450	5.866	1,310	42	24.5
24.0	0.0199	0.0201	0.0202	24.91	25.55	26.19	0.0010	0.0209	0.0213	0.0217	0.0019	0.0218	0.0223	0.0227	0.0029	0.0228	0.0232	0.0236	24.0	404	1.246	802.700	20.606	2,204	4.714	1,450	42	24.0

* For diameters larger than AWG 45, the unit of measure is ohms/lb.; for diameters equal to AWG 45 and finer, the unit of measure is ohms/gram

** For diameters larger than AWG 45, the unit of measure is ohms/1000 feet.; for diameters equal to AWG 45 and finer, the unit of measure is ohms/foot

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