Blade Identification
The Blades of a NEMA connector are identified with:
| Blade Function | Letter | Color | Notes |
|---|---|---|---|
| Ground | G | Green | |
| Neutral | W | White | |
| Phase 1 hot | X | Black | X only is single phase 120V |
| Phase 2 hot | Y | Red | X Y is two phase 240V or 480V |
| Phase 3 hot | Z | Blue | X Y Z is wye three phase 120/208V |
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“The symbol of perpetual youth, the grass-blade, like a long green ribbon, streams from the sod into the summer, checked indeed by the frost, but anon pushing on again, lifting its spear of last year’s hay with the fresh life below. It grows as steadily as the rill oozes out of the ground.... So our human life but dies down to its root, and still puts forth its green blade to eternity.”
—Henry David Thoreau (1817–1862)
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