Southwire 250-ft 12 / 3 Solid Aluminum MC (Metal Clad) Cable

250-ft 12 / 3 Solid Aluminum MC (Metal Clad) Cable. Applications affected by harmonics generated from non-linear switching loads, such as computers, variable frequency drives, electrical test equipment, and office equipment. 12/3 Solid (black/red/blue) 12/3 solid (white-black/white-red/white-blue). Branch, feeder and service power distribution in commercial, industrial, institutional, and multi residential buildings. Fished or embedded in plaster. Concealed or exposed installations