All references are based on the 2017 edition of the NEC. When you want to replace a non-grounding-type receptacle but the wiring method does not include an equipment grounding conductor (EGC), such as ...

Switches controlling line-to-neutral loads must have a neutral conductor installed at a switch serving bathrooms, hallways, stairways, or rooms suitable for human habitation or occupancy, as defined ...

Six, seven, and nine-pin molded cordsets and receptacles replace hardwiring, bringing power to devices on the factory floor quickly and easily. The quick-disconnect cordsets are said to be simple to ...