NEMA wiring device configurations. Straight-blade (non-locking) connectors.
| NEMA Config | Voltage | Current | Poles | Wires | Grounding | Application |
|---|---|---|---|---|---|---|
| 1-15 | 125V | 15A | 2 | 2 | No | Older US outlets (no ground) |
| 5-15 | 125V | 15A | 2 | 3 | Yes | Standard US household outlet |
| 5-20 | 125V | 20A | 2 | 3 | Yes | Kitchen, bathroom, garage circuits |
| 5-30 | 125V | 30A | 2 | 3 | Yes | RV parks, high-power 125V |
| 5-50 | 125V | 50A | 2 | 3 | Yes | Heavy-duty 125V applications |
| 6-15 | 250V | 15A | 2 | 3 | Yes | Window AC units, power tools |
| 6-20 | 250V | 20A | 2 | 3 | Yes | Large AC units, servers |
| 6-30 | 250V | 30A | 2 | 3 | Yes | Welders, large equipment |
| 6-50 | 250V | 50A | 2 | 3 | Yes | Welders, EV chargers (Level 2) |
| 10-30 | 125/250V | 30A | 3 | 3 | No | Older dryer outlets (no ground) |
| 10-50 | 125/250V | 50A | 3 | 3 | No | Older range outlets (no ground) |
| 14-30 | 125/250V | 30A | 3 | 4 | Yes | Modern dryer outlets |
| 14-50 | 125/250V | 50A | 3 | 4 | Yes | Modern range outlets, EV chargers |
| 14-60 | 125/250V | 60A | 3 | 4 | Yes | Heavy industrial, large EV chargers |
| L5-15 | 125V | 15A | 2 | 3 | Yes | Locking — portable generators |
| L5-30 | 125V | 30A | 2 | 3 | Yes | Locking — RV, generator transfer |
| L6-20 | 250V | 20A | 2 | 3 | Yes | Locking — data centers, UPS |
| L6-30 | 250V | 30A | 2 | 3 | Yes | Locking — servers, PDU |
| L14-30 | 125/250V | 30A | 3 | 4 | Yes | Locking — portable generators |
| L14-50 | 125/250V | 50A | 3 | 4 | Yes | Locking — large generators |