ACSR/TW

Aluminum Conductor, Steel Reinforced, Trapezoidal Wire

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Construction:

Core:Stranded standard strength steel core with Class A hot dipped zinc galvanization coating (also available in zinc-5% aluminum-mischmetal alloy coating)
Stranding:Hard-drawn aluminum (1350-H19) round wire shaped strands with 61.2% conductivity

Applications and Features:

ACSR/TW (Aluminum Conductor, Steel Reinforced, Trapezoidal Wire) is a concentrically stranded conductor consisting of trapezoidal-shaped aluminum (1350-H19) wires surrounding a galvanized steel core. The trapezoidal wire design increases packing efficiency, allowing either greater aluminum content within a given conductor diameter for increased ampacity or a reduced conductor diameter for a given aluminum area, reducing wind and ice loading. ACSR/TW combines the high strength and proven performance of ACSR with enhanced electrical performance and line efficiency for overhead transmission and distribution applications.

Continuous operating temperature - 75°C
Emergency operating temperature - 100°C

Specifications:

ASTM B230 Standard Specification for Aluminum 1350-H19 Wire for Electrical Purposes

ASTM B498 Standard Specification for Zinc-Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors

ASTM B779 Standard Specification for Shaped Wire Compact Concentric-Lay-Stranded Aluminum Conductors, Steel-Reinforced (ACSR/TW)

ASTM B802 Standard Specification for Zin-5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Use in Overhead Electrical Conductors

Area Equal to Standard ACSR Conductor - Weights, Measurements, Electrical and Engineering Data

Stock Number	Code Word	Conductor Size	Type	Stranding	Cross-Sectional Area		Layers of Al	Diameter			Weight		Rated Breaking Strength			DC Resistance @ 20°C
					Cross-Sectional Area			Steel Strand	Steel Core	Complete Conductor	Weight		Rated Breaking Strength
					Al	Total		Steel Strand	Steel Core	Complete Conductor	Al	Total	Std	HS	UHS
		kcmil	No.	Al/St	in²	in²		in	in	in	lb/1000ft	lb/1000ft	lb	lb	lb	Ω/mile
TBA	Partridge/TW	266.8	16	14/7	0.2095	0.2436	2	0.0788	0.2364	0.595	250.6	366.0	11,200	11,900	12,500	0.3357
TBA	Merlin/TW	336.4	6	14/1	0.2642	0.2789	2	0.1367	0.1367	0.630	315.3	364.9	8,560	8,840	9,120	0.2693
TBA	Linnet/TW	336.4	16	16/7	0.2642	0.3072	2	0.0884	0.2652	0.659	316.1	461.7	14,000	14,800	15,600	0.2662
TBA	Oriole/TW	336.4	23	16/7	0.2642	0.3259	2	0.1059	0.3177	0.692	317.6	526.5	17,100	18,300	19,500	0.2650
TBA	Ibis/TW	397.5	16	20/7	0.3122	0.3630	2	0.0961	0.2883	0.725	373.5	545.5	16,300	17,300	18,200	0.2253
TBA	Lark/TW	397.5	23	16/7	0.3122	0.3850	2	0.1151	0.3453	0.740	375.3	621.8	20,100	21,500	22,900	0.2243
TBA	Flicker/TW	477.0	13	18/7	0.3746	0.4232	2	0.0940	0.2820	0.776	447.7	612.2	17,200	18,100	19,000	0.1884
TBA	Hawk/TW	477.0	16	18/7	0.3746	0.4356	2	0.1053	0.3159	0.790	448.1	654.6	19,400	20,500	21,700	0.1877
TBA	Hen/TW	477.0	23	20/7	0.3746	0.4620	2	0.1261	0.3783	0.820	450.3	746.2	23,600	25,300	27,000	0.1869
TBA	Parakeet/TW	556.5	13	18/7	0.4371	0.4937	2	0.1015	0.3045	0.840	522.4	714.0	20,000	21,100	22,200	0.1615
TBA	Dove/TW	556.5	16	20/7	0.4371	0.5083	2	0.1138	0.3414	0.850	522.9	763.9	22,600	24,000	25,300	0.1609
TBA	Eagle/TW	556.5	23	20/7	0.4371	0.5391	2	0.1362	0.4086	0.870	525.5	870.8	27,600	29,500	31,500	0.1602
TBA	Squab/TW	605.0	16	20/7	0.4752	0.5525	2	0.1186	0.3558	0.885	568.5	830.2	24,600	26,100	27,500	0.1480
TBA	Teal/TW	605.0	23	20/19	0.4752	0.5835	2	0.0852	0.4260	0.916	571.3	938.7	30,000	32,000	34,000	0.1475
TBA	Swift/TW	636.0	3	27/1	0.4995	0.5134	3	0.1329	0.1329	0.850	598.4	645.3	13,500	13,800	14,100	0.1435
TBA	Rook/TW	636.0	13	20/7	0.4995	0.5642	2	0.1085	0.3255	0.893	597.0	816.0	22,900	24,100	25,400	0.1413
TBA	Grosbeak/TW	636.0	16	20/7	0.4995	0.5808	2	0.1216	0.3648	0.909	597.6	872.8	25,400	27,000	28,600	0.1408
TBA	Scoter/TW	636.0	23	22/7	0.4995	0.6160	2	0.1456	0.4368	0.942	600.5	994.9	30,400	33,200	35,400	0.1402
TBA	Egret/TW	636.0	23	22/19	0.4995	0.6135	2	0.0874	0.4370	0.942	600.5	987.2	31,500	33,700	35,800	0.1403
TBA	Starling/TW	715.5	16	20/7	0.5620	0.6535	2	0.1290	0.3870	0.958	672.3	982.1	28,600	30,400	32,100	0.1251
TBA	Redwing/TW	715.5	23	20/19	0.5620	0.6900	2	0.0926	0.4630	0.994	675.6	1110	34,800	37,200	39,600	0.1247
TBA	Tern/TW	795.0	7	20/7	0.6244	0.6676	2	0.0886	0.2658	0.960	745.2	891.5	22,100	22,900	23,800	0.1138
TBA	Puffin/TW	795.0	10	18/7	0.6244	0.6857	2	0.1056	0.3168	0.980	745.9	953.4	24,800	26,000	27,200	0.1134
TBA	Condor/TW	795.0	13	20/7	0.6244	0.7053	2	0.1213	0.3639	0.993	746.3	1020	28,200	29,800	31,300	0.1130
TBA	Drake/TW	795.0	16	20/7	0.6244	0.7261	2	0.1360	0.4080	1.010	747.0	1091	31,800	33,800	35,700	0.1126
TBA	Mallard/TW	795.0	23	22/19	0.6244	0.7668	2	0.0977	0.4885	1.050	750.6	1234	38,700	41,400	44,000	0.1122
TBA	Canary/TW	900.0	13	20/7	0.7069	0.7985	2	0.1291	0.3873	1.055	844.9	1155	31,600	33,400	35,100	0.0998
TBA	Phoenix/TW	954.0	5	30/7	0.7493	0.7878	3	0.0837	0.2511	1.044	897.7	1028	23,700	24,500	25,200	0.0954
TBA	Rail/TW	954.0	7	32/7	0.7493	0.8011	3	0.0971	0.2913	1.061	898.6	1074	25,900	26,900	27,900	0.0953
TBA	Cardinal/TW	954.0	13	20/7	0.7493	0.8464	2	0.1329	0.3987	1.080	895.5	1224	33,500	35,400	37,200	0.0942
TBA	Canvasback/TW	954.0	23	24/19	0.7493	0.9201	2	0.1070	0.5350	1.149	900.8	1480	46,500	49,700	52,800	0.0935
TBA	Snowbird/TW	1033.5	5	30/7	0.8117	0.8535	3	0.0872	0.2616	1.089	972.5	1114	25,700	26,500	27,300	0.0881
TBA	Ortolan/TW	1033.5	7	34/7	0.8117	0.8678	3	0.1010	0.3030	1.102	973.4	1163	28,100	29,200	30,200	0.0879
TBA	Curlew/TW	1033.5	13	22/7	0.8117	0.9169	2	0.1383	0.4149	1.131	970.1	1326	36,300	38,300	40,300	0.0869
TBA	Avocet/TW	1113.0	5	30/7	0.8741	0.9190	3	0.0904	0.2712	1.130	1047	1199	27,500	28,400	29,200	0.0818
TBA	Bluejay/TW	1113.0	7	34/7	0.8741	0.9346	3	0.1049	0.3147	1.143	1048	1253	30,300	31,400	32,600	0.0817
TBA	Finch/TW	1113.0	13	38/19	0.8741	0.9850	3	0.0862	0.4310	1.190	1051	1427	39,100	41,200	43,200	0.0812
TBA	Oxbird/TW	1192.5	5	30/7	0.9366	0.9848	3	0.0936	0.2808	1.170	1122	1285	29,500	30,400	31,300	0.0763
TBA	Bunting/TW	1192.5	7	34/7	0.9366	1.0013	3	0.1085	0.3255	1.181	1123	1342	32,400	33,600	34,900	0.0762
TBA	Grackle/TW	1192.5	13	38/19	0.9366	1.0553	3	0.0892	0.4460	1.225	1126	1529	41,900	44,100	46,300	0.0758
TBA	Scissortail/TW	1272.0	5	30/7	0.9990	1.0504	3	0.0967	0.2901	1.203	1197	1371	31,400	32,400	33,400	0.0715
TBA	Bittern/TW	1272.0	7	38/7	0.9990	1.0681	3	0.1121	0.3363	1.224	1198	1432	34,600	35,900	37,200	0.0714
TBA	Pheasant/TW	1272.0	13	39/19	0.9990	1.1256	3	0.0921	0.4605	1.260	1201	1631	44,100	46,400	48,800	0.0711
TBA	Dipper/TW	1351.5	7	36/7	1.0615	1.1348	3	0.1155	0.3465	1.256	1273	1521	36,700	38,100	39,500	0.0672
TBA	Martin/TW	1351.5	13	42/19	1.0615	1.1959	3	0.0949	0.4745	1.300	1276	1732	46,800	49,300	51,800	0.0669
TBA	Bobolink/TW	1431.0	7	36/7	1.1239	1.2016	3	0.1189	0.3567	1.290	1348	1611	38,900	40,400	41,900	0.0635
TBA	Plover/TW	1431.0	13	40/19	1.1239	1.2663	3	0.0977	0.4885	1.337	1351	1834	49,600	52,200	54,900	0.0632
TBA	Lapwing/TW	1590.0	7	36/7	1.2488	1.3351	3	0.1253	0.3759	1.358	1498	1790	42,200	43,900	45,500	0.0572
TBA	Falcon/TW	1590.0	13	42/19	1.2488	1.4071	3	0.1030	0.5150	1.410	1501	2038	55,100	58,100	61,000	0.0569
TBA	Chukar/TW	1780.0	8	38/19	1.3980	1.5120	3	0.0874	0.4370	1.445	1674	2061	50,700	52,800	54,900	0.0509
TBA	Bluebird/TW	2156.0	8	64/19	1.6933	1.8311	4	0.0961	0.4805	1.608	2045	2512	61,100	63,700	66,200	0.0424

Diameter Equal to Standard ACSR Conductor - Weights, Measurements, Electrical and Engineering Data

Stock Number	Code Word	Conductor Size	Type	Stranding	ACSR with Equal Diameter			Cross-Sectional Area		Layers of Al	Diameter			Weight		Rated Breaking Strength			DC Resistance @ 20°C
					ACSR with Equal Diameter			Cross-Sectional Area			Steel Strand	Steel Core	Complete Conductor	Weight		Rated Breaking Strength
					Code Word	Size	Stranding	Al	Total		Steel Strand	Steel Core	Complete Conductor	Al	Total	Std	HS	UHS
		kcmil	No.	Al/St	Code Word	kcmil	Al/St	in²	in²		in	in	in	lb/1000ft	lb/1000ft	lb	lb	lb	Ω/mile
TBA	Monongahela/TW	405.1	6	14/1	Merlin	336.4	18/1	0.3182	0.3363	2	0.1520	0.1520	0.680	379.7	440.7	10,200	10,700	11,000	0.2236
TBA	Calumet/TW	565.3	16	20/7	Hawk	477.0	26/7	0.4440	0.5162	2	0.1146	0.3438	0.860	531.2	775.6	22,900	24,300	25,700	0.1584
TBA	Mohawk/TW	571.7	13	18/7	Flicker	477.0	24/7	0.4490	0.5073	2	0.1030	0.3090	0.850	536.6	734.0	20,600	21,700	22,800	0.1572
TBA	Oswego/TW	664.8	16	20/7	Dove	556.5	26/7	0.5221	0.6072	2	0.1244	0.3732	0.927	624.6	912.7	26,600	28,200	29,900	0.1347
TBA	Mystic/TW	666.6	13	20/7	Parakeet	556.5	24/7	0.5235	0.5914	2	0.1111	0.3333	0.913	625.7	855.6	24,000	25,300	26,600	0.1348
TBA	Wabash/TW	762.8	16	20/7	Grosbeak	636.0	26/7	0.5991	0.6965	2	0.1331	0.3993	0.990	716.7	1046	30,500	32,400	34,200	0.1174
TBA	Maumee/TW	768.2	13	20/7	Rook	636.0	24/7	0.6033	0.6818	2	0.1195	0.3585	0.977	721.0	986.8	27,700	29,200	30,700	0.1170
TBA	Nechako/TW	768.9	3	27/1	Swift	636.0	36/1	0.6039	0.6220	3	0.1520	0.1520	0.930	723.5	784.5	16,400	16,900	17,200	0.1187
TBA	Fraser/TW	946.7	10	34/7	Puffin	795.0	22/7	0.7435	0.8167	3	0.1154	0.3462	1.077	892.5	1140	29,600	31,000	32,400	0.0957
TBA	Kettle/TW	957.2	7	32/7	Tern	795.0	45/7	0.7518	0.8038	3	0.0973	0.2919	1.060	901.6	1078	26,000	27,000	28,000	0.0949
TBA	Suwannee/TW	959.6	16	22/7	Drake	795.0	26/7	0.7537	0.8762	2	0.1493	0.4479	1.110	901.7	1316	37,200	40,100	42,500	0.0933
TBA	Columbia/TW	966.2	13	22/7	Condor	795.0	54/7	0.7589	0.8573	2	0.1338	0.4014	1.092	907.0	1240	34,300	36,200	38,100	0.0930
TBA	Genesee/TW	1158.0	7	34/7	Rail	954.0	45/7	0.9095	0.9734	3	0.1078	0.3234	1.165	1091	1307	31,600	32,900	34,100	0.0785
TBA	Hudson/TW	1158.4	13	24/7	Cardinal	954.0	54/7	0.9098	1.0281	2	0.1467	0.4401	1.196	1087	1488	39,600	42,500	44,700	0.0776
TBA	Cheyenne/TW	1168.1	5	30/7	Phoenix	954.0	42/7	0.9174	0.9645	3	0.0926	0.2778	1.155	1099	1259	28,800	29,800	30,700	0.0779
TBA	Yukon/TW	1233.6	13	38/19	Curlew	1033.5	54/7	0.9689	1.0925	3	0.0910	0.4550	1.245	1165	1584	42,900	45,200	47,500	0.0733
TBA	Nelson/TW	1257.1	7	36/7	Ortolan	1033.5	45/7	0.9873	1.0556	3	0.1115	0.3345	1.213	1184	1415	34,200	35,500	36,800	0.0723
TBA	Catawba/TW	1272.0	5	30/7	Snowbird	1033.5	42/7	0.9990	1.0504	3	0.0967	0.2901	1.203	1197	1371	31,400	32,400	33,400	0.0715
TBA	Thames/TW	1334.6	13	38/19	Finch	1113.0	54/19	1.0482	1.1812	3	0.0944	0.4720	1.290	1260	1711	46,300	48,700	51,200	0.0677
TBA	Mackenzie/TW	1359.7	7	38/7	Bluejay	1113.0	45/7	1.0679	1.1418	3	0.1159	0.3477	1.260	1281	1531	37,000	38,400	39,800	0.0668
TBA	Truckee/TW	1372.5	5	30/7	Avocet	1113.0	42/7	1.0780	1.1334	3	0.1004	0.3012	1.248	1292	1480	33,400	34,500	35,500	0.0663
TBA	Merrimack/TW	1433.6	13	39/19	Grackle	1192.5	54/19	1.1259	1.2686	3	0.0978	0.4890	1.340	1354	1838	49,700	52,300	55,000	0.0631
TBA	Miramichi/TW	1455.3	7	36/7	Bunting	1192.5	45/7	1.1430	1.2222	3	0.1200	0.3600	1.302	1371	1639	39,200	40,700	42,200	0.0624
TBA	St. Croix/TW	1467.8	5	33/7	Oxbird	1192.5	42/7	1.1528	1.2124	3	0.1041	0.3123	1.292	1381	1583	35,800	36,900	38,100	0.0620
TBA	Rio Grande/TW	1533.3	13	38/19	Pheasant	1272.0	54/19	1.2043	1.3571	3	0.1012	0.5060	1.380	1448	1966	53,200	56,000	58,900	0.0590
TBA	Potomac/TW	1557.4	7	36/7	Bittern	1272.0	45/7	1.2232	1.3079	3	0.1241	0.3723	1.350	1467	1754	41,900	43,600	45,200	0.0583
TBA	Platte/TW	1569.0	5	33/7	Scissortail	1272.0	42/7	1.2323	1.2957	3	0.1074	0.3222	1.334	1476	1691	38,200	39,400	40,600	0.0580
TBA	Pecos/TW	1622.0	13	39/19	Martin	1351.5	54/19	1.2739	1.4428	3	0.1064	0.5320	1.420	1531	2104	57,500	60,600	63,800	0.0557
TBA	Schuylkill/TW	1657.4	7	36/7	Dipper	1351.5	45/7	1.3017	1.3918	3	0.1280	0.3840	1.386	1561	1866	44,000	45,700	47,500	0.0548
TBA	James/TW	1730.6	13	39/19	Plover	1431.0	54/19	1.3592	1.5316	3	0.1075	0.5375	1.470	1634	2219	59,400	62,600	65,800	0.0522
TBA	Pee Dee/TW	1758.6	7	38/7	Bobolink	1431.0	45/7	1.3812	1.4768	3	0.1319	0.3957	1.430	1656	1980	46,700	48,600	50,400	0.0517
TBA	Cumberland/TW	1926.9	13	42/19	Falcon	1590.0	54/19	1.5134	1.7050	3	0.1133	0.5665	1.550	1819	2469	66,000	69,600	73,200	0.0469
TBA	Athabaska/TW	1949.6	7	44/7	Lapwing	1590.0	45/7	1.5312	1.6377	3	0.1392	0.4176	1.504	1836	2197	51,900	53,900	56,000	0.0466
TBA	Powder/TW	2153.8	8	64/19	Chukar	1780.0	84/19	1.6916	1.8294	4	0.0961	0.4805	1.596	2043	2510	61,100	63,600	66,200	0.0424
TBA	Santee/TW	2627.3	8	64/19	Bluebird	2156.0	84/19	2.0635	2.2318	4	0.1062	0.5310	1.761	2492	3063	74,500	77,600	80,800	0.0348

Revision: 1.000.016

Updated On: Oct. 26, 2026, 2:53 p.m. UTC