12/3 BX AC Cable This cable has aluminum armor to withstand harsh environmental conditions. THHN/THWN insulation of this cable resists electrical leakage and offers protection against environmental threats. This 0.471-Inch OD cable has current rating of 25-Amps at 75 deg C and 30-Amps at 90 deg C. This 250-ft copper cable comes in a coil. It is suitable for branch circuits in residential, commercial, industrial and non-patient care areas/spaces. Cable is UL listed, RoHS compliant and NEMA rated.