ASTM B452 Copper Clad Steel Strand(40％CCS)

Introduction

Product Description
Selecting the Right Size for the Application
When selecting a conductor for a ground grid, it must meet the maximum fault current for the identified duration and meet a minimum breaking load as required by the substation design (typically 5,000 pounds). The key to properly sizing copperclad steel wire is the actual fault current requirement. Often copper is physically oversized to gain the physical strength needed in the application. With Copperclad, the physical strength is inherent to the product so the primary consideration is electrical. Table 2 below compares the ampacity ratings of copper and Copperclad Steel Wire which allows the user to visually select the Copperclad equivalent. For example:
Requirements: The equivalent to 4/0 copper per the IEEE Fusing Chart is 19#9 40%. A typical maximum fault current for a distribution substation is ~18 kA at 30 cycles. Most engineers upsize to 4/0 copper in order to meet the mechanical strength requirement.
AFL solution: A 2/0 copper or 7#6 Copperclad SteelWire conductor will meet
this requirement instead of the larger size 4/0 copper commonly used for ground grids. The conductor safety margin for 7#6 Copperclad Steel Wire is 30% and meets the fault current and mechanical strength requirements.

Technical parameter

CONDUCTOR SIZE	STRANDS	STRAND DIAMETER		OVERALL DIAMETER		AREA		FAULT CURRENT	WEIGHT/LENGTH		WIRE RESISTANCE		MIN.BREAK LOAD
CONDUCTOR SIZE		STRAND DIAMETER		OVERALL DIAMETER		AREA		FAULT CURRENT	WEIGHT/LENGTH		WIRE RESISTANCE		MIN.BREAK LOAD
AWG		IN.	MM	IN.	MM	CMIL	(MM^2)	AMPSAT 0.5SEC.	LBS/KFT	KG/KM	Ω/KFT	Ω/KM	LBF	KGF
AWG		IN.	MM	IN.	MM	CMIL	(MM^2)	AMPSAT 0.5SEC.	LBS/KFT	KG/KM	Ω/KFT	Ω/KM	LBF	KGF
19#4	19	0.2043	5.19	1.022	25.95	793,000	401.8	107.28	2251.7	3350.9	0.0338	0.111	21755	9868
19#5	19	0.1819	4.62	0.91	23.1	628,700	318.6	85.05	1785	2656.3	0.0427	0.14	17246	7823
19#6	19	0.162	4.11	0.81	20.57	498,600	252.6	67.46	1415.8	2106.9	0.0538	0.1765	13679	6205
19#7	19	0.1443	3.67	0.722	18.33	395,600	200.5	53.52	1123.3	1671.7	0.0678	0.2224	10853	4923
19#8	19	0.1285	3.26	0.643	16.32	313,700	159	42.44	890.8	1325.6	0.0855	0.2805	8606	3904
19#9	19	0.1144	2.91	0.572	14.53	248,700	126	33.64	706	1050.7	0.1079	0.3539	6821	3094
4/0	19	0.1055	2.68	0.528	13.4	211,500	107.2	28.61	600.4	893.6	0.1268	0.4161	5801	2631
19#10	19	0.1019	2.59	0.51	12.94	197,300	100	26.69	560.2	833.6	0.1359	0.446	5412	2455
7#4	7	0.2043	5.19	0.613	15.57	292,200	148.1	39.53	826.3	1229.7	0.0914	0.3	8015	3635
7#5	7	0.1819	4.62	0.546	13.86	231,600	117.4	31.33	655	974.8	0.1153	0.3784	6354	2882
7#6	7	0.162	4.11	0.486	12.34	183,700	93.1	24.85	519.6	773.2	0.1454	0.4771	5040	2286
7#7	7	0.1443	3.67	0.433	11	145,800	73.9	19.72	412.2	613.5	0.1833	0.6013	3998	1814
2/0	7	0.1379	3.5	0.414	10.51	133,100	67.4	18.01	376.5	560.2	0.2007	0.6584	3652	1656
7#8	7	0.1285	3.26	0.386	9.79	115,600	58.6	15.64	326.9	486.5	0.2311	0.7583	3171	1438
1/0	7	0.1228	3.12	0.368	9.35	105,600	53.5	14.28	298.5	444.3	0.2531	0.8303	2896	1313
7#9	7	0.1144	2.91	0.343	8.72	91,610	46.4	12.39	259.1	385.6	0.2916	0.9567	2513	1140
7#10	7	0.1019	2.59	0.306	7.76	72,690	36.8	9.83	205.6	305.9	0.3675	1.2058	1994	904
3#4	3	0.2043	5.19	0.44	11.18	125,200	63.4	16.94	353.4	526	0.2129	0.6986	3626	1645
3#5	3	0.1819	4.62	0.392	9.96	99,260	50.3	13.43	280.2	416.9	0.2686	0.8812	2874	1304
3#6	3	0.162	4.11	0.349	8.86	78,730	39.9	10.65	222.2	330.7	0.3386	1.111	2280	1034
3#7	3	0.1443	3.67	0.311	7.9	62,470	31.7	8.45	176.3	262.4	0.4268	1.4003	1809	820
3#8	3	0.1285	3.26	0.277	7.04	49,540	25.1	6.7	139.8	208.1	0.5382	1.7658	1434	651
3#9	3	0.1144	2.91	0.247	6.27	39,260	19.9	5.31	110.8	164.9	0.6791	2.2279	1137	516
3#10	3	0.1019	2.59	0.22	5.59	31,150	15.8	4.21	87.9	130.8	0.8559	2.808	902	409
#2AWG	7	0.086	2.18	0.258	6.55	51,770	26.2	7	146.4	217.9	0.516	1.6929	1435	651
#4AWG	7	0.068	1.73	0.204	5.18	32,370	16.4	4.38	91.5	136.2	0.8253	2.7078	897	407
#2AWG	1	0.2576	6.54	0.258	6.54	66,370	33.6	8.98	185.8	276.6	0.3985	1.3075	2023	918
#4AWG	1	0.2043	5.19	0.204	5.19	41,740	21.2	5.65	116.9	173.9	0.6337	2.0791	1272	577
#6AWG	1	0.162	4.12	0.162	4.12	26,250	13.3	3.55	73.5	109.4	1.0076	3.3058	800	363
#8AWG	1	0.1285	3.26	0.129	3.26	16,510	8.4	2.23	46.2	68.8	1.6018	5.2554	503	228
#9AWG	1	0.1144	2.91	0.114	2.91	13,090	6.6	1.77	36.6	54.5	2.021	6.6307	399	181
#10AWG	1	0.1019	2.59	0.102	2.59	10,380	5.3	1.4	29.1	43.3	2.5473	8.3572	316	144