NEMA 6-20 is a 20A/250V outlet with two straight blades and no neutral pin, used for 240V line-to-line appliances including air compressors, welders, and older EV level 2 chargers.
| Pin | Name | Function | Type |
|---|---|---|---|
| L1 | Line 1 | 240V AC line 1 | PWR |
| L2 | Line 2 | 240V AC line 2 | PWR |
| G | Ground | Safety ground | GND |