NEMA 14-50 — 125/250 V, 50 A Plug & Receptacle
NEMA 14-50 is a straight-blade configuration per NEMA WD-6: 125/250 V, 50 A, 3-pole 4-wire grounding. Range, RV park pedestal, EV charging. The receptacle is 14-50R, the matching plug 14-50P.
Face diagrams by Comrade Mmirg via Wikimedia Commons, CC BY-SA 4.0 / CC0, unmodified.
Specifications
- Configuration
- 14-50
- Series
- Straight blade
- Voltage rating
- 125/250 V
- Amp rating
- 50 A
- Poles / wires
- 3P–4W
- Neutral
- Yes
- Equipment ground
- Yes
- Max load (at rating)
- 250 V × 50 A = 12,500 VA
- Continuous (80%)
- 10,000 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
Range, RV park pedestal, EV charging. 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 14-50 vs the ones it gets confused with
14-50 vs 6-50
Both are 50 A / 250 V-class grounding devices, but 14-50 carries a neutral (3P–4W: two hots, neutral, ground) so it can also serve 125 V loads — ranges and RVs need that. 6-50 is 2P–3W with no neutral. Not interchangeable.
14-50 vs TT-30
The RV-park pair: 14-50 is the 50 A / 125/250 V pedestal outlet; TT-30 is 30 A at 125 V only. Plugging an RV’s TT-30 cord into a 14-50 outlet takes an adapter that picks up one hot and the neutral.
RELATED CONFIGURATIONS
See every configuration on the full NEMA plug & receptacle chart →
Common questions
What is the difference between 14-50R and 14-50P?
The letter is the device: 14-50R is the receptacle (outlet), 14-50P is the plug on the cord. Both share the same configuration — 125/250 V, 50 A, 3-pole 4-wire grounding.
Does NEMA 14-50 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 14-50 vs 6-50 — what is the difference?
Both are 50 A / 250 V-class grounding devices, but 14-50 carries a neutral (3P–4W: two hots, neutral, ground) so it can also serve 125 V loads — ranges and RVs need that. 6-50 is 2P–3W with no neutral. Not interchangeable.
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