NEMA L8-30 — 480 V, 30 A Twist-Lock Plug & Receptacle
NEMA L8-30 is a twist-locking configuration per NEMA WD-6: 480 V, 30 A, 2-pole 3-wire grounding. 480 V single-phase, hot–hot–ground. The receptacle is L8-30R, the matching plug L8-30P.
No free-licensed face diagram exists for this configuration yet — locking faces are not on Wikimedia Commons. The specs below still identify it unambiguously.
Specifications
- Configuration
- L8-30
- Series
- Locking (L / twist-lock)
- Voltage rating
- 480 V
- Amp rating
- 30 A
- Poles / wires
- 2P–3W
- Neutral
- No
- Equipment ground
- Yes
- Max load (at rating)
- 480 V × 30 A = 14,400 VA
- Continuous (80%)
- 11,520 VA
Load figures are the arithmetic of the device rating at unity power factor. Continuous loads (3 hours or more) are limited to 80% of the circuit rating per NEC 210.19/210.20 — and the branch circuit behind the receptacle comes from the load calculation and conductor sizing, not from the plug face.
Where you meet it
480 V single-phase, hot–hot–ground. The locking blades twist in and cannot vibrate or pull loose — the reason generators, stage rigs, and equipment connections spec the L series over its straight-blade cousins.
RELATED CONFIGURATIONS
See every configuration on the full NEMA plug & receptacle chart →
Common questions
What is the difference between L8-30R and L8-30P?
The letter is the device: L8-30R is the receptacle (outlet), L8-30P is the plug on the cord. Both share the same configuration — 480 V, 30 A, 2-pole 3-wire grounding, twist-locking blades.
Does NEMA L8-30 have a neutral and a ground?
No neutral — the 480 V rating means the circuit runs line-to-line with no neutral. It carries an equipment grounding conductor (the extra wire beyond the poles).
RUN THE NUMBERS
Run your whole job on the same numbers
These NORDIX tools are a taste of the full platform — bid pipeline, estimating, and job costing that carry your numbers from the first bid to the final invoice.
See what NORDIX does →