This is 12-gauge NM-B (Romex-style) copper building wire with four conductors plus a ground, rated 600V and 20 amps. The four-conductor layout suits multi-wire branch circuits and runs where several switched loads share one cable, such as lighting zones, fan-plus-light combos or split receptacles. It is solid copper for dry indoor locations up to 90°C, and it is stiffer to pull than stranded wire, so bends and box fills need care. Compared with 12/2 and 12/3 NM-B, it costs more per foot and is heavier, but it saves a separate run when you need that fourth conductor.
In stockReturn policy
Buyers rate it highly, with 4.8 out of 5 from 16 ratings. They mainly value getting four conductors plus ground in one cable for multi-wire and multi-switch runs.
This is 12/4 with ground NM-B non-metallic sheathed copper building wire (Romex-type) in a solid yellow jacket. It has four insulated conductors plus a bare ground wire. The conductors are soft solid bare annealed copper with PVC insulation, and the jacket is PVC.
It is rated for 600 volts and an allowable ampacity of 20 amps. It is used in residential branch circuits that supply lighting, outlets and small appliances, in dry indoor locations with ambient temperatures up to 90°C. Installation in air voids within tile walls is permitted under NEC Article 334.
The four conductors suit multi-wire branch circuits and circuits with multiple switches and loads. Examples include three-way and four-way lighting circuits, separate switching for multiple fixtures, shared neutral setups, split circuit receptacles, and fans with separate light controls. The cable is made for easy pulling in new construction and renovations.
