NEMA 14-30 — 125/250 V, 30 A Plug & Receptacle
NEMA 14-30 is a straight-blade configuration per NEMA WD-6: 125/250 V, 30 A, 3-pole 4-wire grounding. Modern 4-wire dryer. The receptacle is 14-30R, the matching plug 14-30P.
Face diagrams by Comrade Mmirg via Wikimedia Commons, CC BY-SA 4.0 / CC0, unmodified.
Specifications
- Configuration
- 14-30
- Series
- Straight blade
- Voltage rating
- 125/250 V
- Amp rating
- 30 A
- Poles / wires
- 3P–4W
- Neutral
- Yes
- Equipment ground
- Yes
- Max load (at rating)
- 250 V × 30 A = 7,500 VA
- Continuous (80%)
- 6,000 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
Modern 4-wire dryer. Family 14 overall: modern dryer (14-30), range / rv / ev (14-50). Blade geometry keys the voltage family physically: a plug from a different voltage class will not enter this receptacle.
NEMA 14-30 vs the ones it gets confused with
14-30 vs 10-30
The modern 4-wire dryer configuration. Replacing a 10-30 receptacle with a 14-30 requires a grounding conductor to the outlet — swapping the cord on the dryer is how appliances move the other way.
RELATED CONFIGURATIONS
See every configuration on the full NEMA plug & receptacle chart →
Common questions
What is the difference between 14-30R and 14-30P?
The letter is the device: 14-30R is the receptacle (outlet), 14-30P is the plug on the cord. Both share the same configuration — 125/250 V, 30 A, 3-pole 4-wire grounding.
Does NEMA 14-30 have a neutral and a ground?
Yes on the neutral — the 125/250 V rating means the circuit includes a grounded (neutral) conductor. It carries an equipment grounding conductor (the extra wire beyond the poles).
NEMA 14-30 vs 10-30 — what is the difference?
The modern 4-wire dryer configuration. Replacing a 10-30 receptacle with a 14-30 requires a grounding conductor to the outlet — swapping the cord on the dryer is how appliances move the other way.
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