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This is non-metallic sheathed cable equivalent to Romex NM-B, sold on 250 ft, 500 ft or 1000 ft spools. It has three 4 AWG conductors plus a bare copper ground, a 30 mil PVC sheath and 600 V rating, and it is lead-free and RoHS compliant. The 4 AWG size suits heavy residential loads such as ranges, dryers, subpanels and large feeders where 10 and 12 AWG branch-circuit cable is too small. It meets UL 83, UL 719 and ASTM specs, so it is a code-grade alternative to name-brand Romex at a heavier gauge.
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This is 4/3 NM-B non-metallic sheathed cable with a ground wire. It is used in normally dry residential installations as branch circuits for outlets, lighting and other residential loads. It is equivalent to Romex NM-B, is lead free and is RoHS compliant.
Each cable has three 4 AWG conductors and an 8 AWG bare copper ground. Insulation is color-coded PVC with a nylon covering that meets the thickness required for Type THHN and is rated 90°C. A 30 mil color-coded PVC sheath rated 90°C covers the assembly.
The cable is rated at 600 volts. It is rated for a 90°C conductor temperature when dry, but its ampacity is limited to 60°C under NEC 2008 and NEC 2011. It may be fished through masonry or tile walls where it is not exposed or subject to excessive moisture or dampness.
