
12/3 NM-B Wire w/ Ground Yellow or Purple
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This is 12-gauge, three-conductor non-metallic sheathed cable with a bare ground, the standard branch-circuit wire for 20-amp residential circuits. Solid copper conductors, PVC insulation with a nylon jacket rated 90°C, and a 30 mil PVC outer sheath rated 600 volts. It meets UL 83, UL 719 and ASTM specs and is lead-free and RoHS compliant. Its ampacity is limited to the 60°C column per the NEC, so it is not a substitute for higher-temperature or wet-location wiring.
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This is 12/3 Type NM-B non-metallic sheathed cable with ground, used in normally dry residential installations. It serves as branch-circuit wiring for outlets, lighting and other residential loads, as outlined in NEC 2008 and NEC 2011 Article 334. It may be fished through masonry or tile walls where it is not exposed or subject to excessive moisture or dampness.
Each cable has three solid annealed bare copper conductors plus a bare copper ground. The conductors have color-coded PVC insulation with a nylon covering that meets Type THHN thickness. A 30 mil color-coded PVC sheath rated 90°C covers the assembly.
The cable is rated at 600 volts. Its conductor temperature rating is 90°C dry, but its ampacity is limited to 60°C under NEC 2008 and NEC 2011. It is lead free and RoHS compliant.




