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Romex 10/2 NM-B is a 250 ft coil of two-conductor copper cable with a bare ground, rated 30 A at 600 V and 90 °C. The solid 10 AWG copper and nylon-jacketed PVC sheath are the standard choice for 30 A branch circuits such as electric dryers, water heaters and small subpanels. It is stiff to pull through walls and needs protection where exposed, so it suits indoor residential wiring rather than conduit or outdoor runs. Compared with 12/2 and 14/2 NM-B, it carries more current but costs more per foot and bends less easily.
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Electricians and DIYers treat 10/2 NM-B as dependable, code-standard cable for 30 A circuits. The common complaints are stiffness and the effort of pulling it through walls.
This Romex NM-B building wire is a 2-conductor cable in 10 AWG. It comes in a 250 ft length.
Each conductor is solid copper with a single strand and PVC insulation. The cable has an orange nylon sheath. It is rated for 600 V and 30 A, with a 90 deg C operating temperature.
