{"product_id":"250-mcm-stranded-bare-copper-wire-soft-drawn-19-strand","title":"250 MCM Stranded Bare Copper Wire, Soft Drawn, 19 Strand","description":"\u003cp data-path-to-node=\"6\"\u003e\u003cstrong\u003e\"Engineered for maximum electrical mass, heavy-duty grounding rings, and critical structural bonding, this 250 MCM Stranded Bare Copper wire is built to handle high-amperage infrastructure demands. Featuring high-purity, soft-drawn (annealed) construction, it provides an ultra-low-impedance path to ground, making it the definitive standard for industrial substations, commercial grid systems, and data center earth shields.\"\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"7\"\u003e\u003cb data-path-to-node=\"7\" data-index-in-node=\"0\"\u003eWhy Professionals Choose 250 MCM Bare Copper\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp data-path-to-node=\"8\"\u003eWhen project specifications move past standard AWG sizes, \u003cb data-path-to-node=\"8\" data-index-in-node=\"58\"\u003e250 MCM (kcmil)\u003c\/b\u003e is a common choice for heavy commercial service entrances, lightning down-conductors, and subsurface grounding loops. This conductor is engineered to safely absorb and dissipate severe fault currents and lightning surges without breaking down. The uninsulated, stranded construction ensures the cable remains workable for field crews making bends around structural steel or routing through tight trenches. Because it is 99.9% pure copper, it natively resists moisture and harsh soil chemistry, guaranteeing a permanent, maintenance-free grounding grid.\u003c\/p\u003e\n\u003cul data-path-to-node=\"9\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,0,0\"\u003e\u003cb data-path-to-node=\"9,0,0\" data-index-in-node=\"0\"\u003eMaximum Fault-Current Capacity:\u003c\/b\u003e 99.9% pure, uninsulated copper provides a massive cross-sectional area to safely redirect high-magnitude short circuits into the earth.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,1,0\"\u003e\u003cb data-path-to-node=\"9,1,0\" data-index-in-node=\"0\"\u003eSoft-Drawn (Annealed):\u003c\/b\u003e Thermally treated to relax the copper's crystalline matrix, removing stiff wire memory so installers can easily manipulate the cable around grounding bars and lugs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,2,0\"\u003e\u003cb data-path-to-node=\"9,2,0\" data-index-in-node=\"0\"\u003eDirect Burial Resilience:\u003c\/b\u003e Naturally immune to subsurface moisture and oxidation, removing the need for a protective jacket when cast in concrete or buried directly in soil.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,3,0\"\u003e\u003cb data-path-to-node=\"9,3,0\" data-index-in-node=\"0\"\u003eConcentric-Lay Stranding:\u003c\/b\u003e Multi-wire engineering delivers exceptional tensile strength and mechanical ruggedness, defending the wire against crushing or scraping during rough field backfilling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003eTechnical Specifications: 250 MCM Stranded Bare Copper Wire\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp data-path-to-node=\"11\"\u003e\u003cb data-path-to-node=\"11\" data-index-in-node=\"0\"\u003eENGINEERING OVERVIEW\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"12\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,0,0\"\u003e\u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"0\"\u003eConductor Size:\u003c\/b\u003e 250 MCM (250 kcmil)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,2,0\"\u003e\u003cb data-path-to-node=\"12,2,0\" data-index-in-node=\"0\"\u003eTemper:\u003c\/b\u003e Soft-Drawn (Annealed)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,3,0\"\u003e\u003cb data-path-to-node=\"12,3,0\" data-index-in-node=\"0\"\u003eMaterial:\u003c\/b\u003e Bare Copper (Uninsulated)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,4,0\"\u003e\u003cb data-path-to-node=\"12,4,0\" data-index-in-node=\"0\"\u003eOverall Diameter:\u003c\/b\u003e 0.574 inches (14.58 mm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,5,0\"\u003e\u003cb data-path-to-node=\"12,5,0\" data-index-in-node=\"0\"\u003eApprox. Weight:\u003c\/b\u003e 772.0 lbs per 1,000 ft (0.772 lb\/ft)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,6,0\"\u003e\u003cb data-path-to-node=\"12,6,0\" data-index-in-node=\"0\"\u003eDC Resistance at 20ºC:\u003c\/b\u003e 0.0423 Ohms\/1,000 ft\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,7,0\"\u003e\u003cb data-path-to-node=\"12,7,0\" data-index-in-node=\"0\"\u003eRated Breaking Strength:\u003c\/b\u003e \u003cmeta charset=\"utf-8\"\u003e7,627 lbs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,8,0\"\u003e\u003cb data-path-to-node=\"12,8,0\" data-index-in-node=\"0\"\u003eAmpacity Rating:\u003c\/b\u003e 530 Amps \u003ci data-path-to-node=\"12,8,0\" data-index-in-node=\"26\"\u003e(Based on 75°C conductor temp; 25°C ambient; 2ft.\/sec. wind in sun)\u003c\/i\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,9,0\"\u003e\u003cb data-path-to-node=\"12,9,0\" data-index-in-node=\"0\"\u003eCompliance Standards:\u003c\/b\u003e ASTM B-3 (Soft\/Annealed), ASTM B-8 (Concentric-Lay), Federal Spec QQ-W-343\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-path-to-node=\"13\"\u003e\u003cb data-path-to-node=\"13\" data-index-in-node=\"0\"\u003eCommon Applications for 250 MCM Bare Copper Wire\u003c\/b\u003e\u003c\/h4\u003e\n\u003cul data-path-to-node=\"14\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,0,0\"\u003e\u003cb data-path-to-node=\"14,0,0\" data-index-in-node=\"0\"\u003eIndustrial Grounding Loops:\u003c\/b\u003e The heavy-duty standard for burying primary ground rings around commercial high-rises, hospitals, and heavy industrial plants.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,1,0\"\u003e\u003cb data-path-to-node=\"14,1,0\" data-index-in-node=\"0\"\u003eSubstation Grid Meshes:\u003c\/b\u003e Crucial for weaving underground safety mats and bonding high-voltage utility transformers and switchgear.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,2,0\"\u003e\u003cb data-path-to-node=\"14,2,0\" data-index-in-node=\"0\"\u003eLarge Service Entrances:\u003c\/b\u003e Safely bonding main 800A, 1200A, and higher commercial distribution panels to the primary building ground.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,3,0\"\u003e\u003cb data-path-to-node=\"14,3,0\" data-index-in-node=\"0\"\u003eData Center Earth Shields:\u003c\/b\u003e Extensively specified in mission-critical facilities to shield sensitive server arrays from static and external surges.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"14,4,0\"\u003e\u003cb data-path-to-node=\"14,4,0\" data-index-in-node=\"0\"\u003eLightning Protection Backbones:\u003c\/b\u003e Used as the primary uninsulated down-conductor for communication towers, industrial smokestacks, and skyscrapers.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"15\"\u003e\n\u003cp data-path-to-node=\"16\"\u003e\u003cb data-path-to-node=\"16\" data-index-in-node=\"0\"\u003eTechnical Note:\u003c\/b\u003e All values are nominal and subject to industry tolerances and manufacturer corrections. Specifications are subject to change without notice. It is the buyer’s responsibility to verify that all materials meet the specific requirements of the project and comply with local electrical codes.\u003cem\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"16\"\u003e \u003c\/p\u003e","brand":"Wire America","offers":[{"title":"250 ft. Spool","offer_id":52006820905274,"sku":"BCSTR250-19-250","price":0.0,"currency_code":"USD","in_stock":true},{"title":"500 ft. Spool","offer_id":52006820938042,"sku":"BCSTR250-19-500","price":0.0,"currency_code":"USD","in_stock":true},{"title":"1000 ft. Spool","offer_id":52006820970810,"sku":"BCSTR250-19-1K","price":0.0,"currency_code":"USD","in_stock":true},{"title":"2500 ft. Spool","offer_id":52006821003578,"sku":"BCSTR250-19-2500","price":0.0,"currency_code":"USD","in_stock":true},{"title":"5000 ft. Spool","offer_id":52006821036346,"sku":"BCSTR250-19-5K","price":0.0,"currency_code":"USD","in_stock":true},{"title":"By the Foot","offer_id":52006821069114,"sku":"BCSTR250-19-FT","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0969\/0234\/9114\/files\/Stranded_Bare_Copper_A_a47f1559-8556-463b-819e-1a7df1ad8195.jpg?v=1760627120","url":"https:\/\/www.wireamerica.com\/products\/250-mcm-stranded-bare-copper-wire-soft-drawn-19-strand","provider":"Wire America ","version":"1.0","type":"link"}