EV Charger Outlet (NEMA 14-50) Symbol
Definition: The EV Charger Outlet (NEMA 14-50) symbol represents a 240 V AC, 50 A, 4-wire receptacle used as the connection point for Level 2 electric vehicle charging equipment (EVSE), as defined in NFPA 70 (NEC) Article 625 and NEMA WD-6, depicted in electrical wiring diagrams as a four-pin outlet block with L1, L2, Neutral, and Ground connections.
Also known as: NEMA 14-50 outlet, EV outlet, Level 2 charger outlet, 240V EV receptacle, electric vehicle charging outlet, EVSE outlet, 50-amp outlet.
What the EV Charger Outlet (NEMA 14-50) symbol means
The EV Charger Outlet (NEMA 14-50) symbol marks the location of a 240 V AC, 50 A, 4-wire receptacle specifically installed for electric vehicle charging at residential or commercial locations. The NEMA 14-50 configuration provides two 120 V hot legs (L1 and L2), a neutral conductor, and a ground, supplying up to 9.6 kW of Level 2 charging power to an EV's onboard charger via a J1772 plug or proprietary vehicle connector.
On electrical floor plans and load-calculation worksheets, this symbol identifies a dedicated EV charging branch circuit designed per NEC Article 625 requirements. The dedicated circuit must be protected by a 50 A two-pole breaker (for the NEMA 14-50 receptacle) or sized according to the EVSE nameplate continuous load rating at 125% per NEC 625.40.
How to identify the EV Charger Outlet (NEMA 14-50) symbol
The EV Charger Outlet symbol is drawn as a rectangular block labelled 'NEMA 14-50', 'EV CHARGER', or 'EV OUTLET'. Four pins are shown: L1 (240 V hot leg 1, top), L2 (240 V hot leg 2, bottom), Neutral (left), and Ground (right), reflecting the NEMA 14-50 physical slot arrangement. On electrical floor plans the symbol is a circle with an 'EV' or car-with-plug icon notation. Some diagrams show the EVSE charging station as the load block downstream of the outlet symbol.
Function and usage boundary
The NEMA 14-50 outlet provides a standard 240 V AC plug-in connection between the dedicated branch circuit and a portable Level 2 EVSE (Electric Vehicle Supply Equipment). The two hot legs (L1 and L2) together deliver 240 V AC at up to 50 A continuous (40 A load per NEC 80% rule = 9.6 kW) to the vehicle's onboard charger. The Neutral conductor allows the EVSE control circuitry to sense voltage or power its control electronics if needed; the Ground provides the safety earth fault current path. Hardwired EVSE installations may omit the outlet and connect directly to the circuit, but the schematic pin arrangement remains identical.
Standards: IEC vs ANSI
| IEC 60617 | IEC 61851-1 governs EV conductive charging system equipment; IEC 62196-2 defines Mode 3 charging connectors (Type 2 / Mennekes in Europe). IEC countries use Type 2 connectors at 230 V (single-phase) or 400 V (three-phase) rather than NEMA 14-50. The NEMA 14-50 outlet symbol is specific to North American (NEC) practice. |
|---|---|
| ANSI/IEEE 315 | NFPA 70 (NEC) Article 625 (Electric Vehicle Power Transfer Systems) and Article 210 (Branch Circuits) govern NEMA 14-50 EV charging circuit installations. NEMA WD-6 specifies the physical 14-50R receptacle configuration (4-wire: X/Y/W/G). UL 2594 covers EVSE safety, and UL 2231 covers personnel protection devices for EVSE. |
| Key difference | North America uses NEMA 14-50 (240 V, 50 A, 4-wire) for portable Level 2 EVSE. Europe/IEC uses IEC 62196-2 Type 2 connectors at 230/400 V, with Mode 3 charging that includes dedicated CP (control pilot) and PE (protective earth) signal conductors — a fundamentally different connector and circuit design. Tesla Destination Chargers in North America use NEMA 14-50 or hardwired 240 V connections. |
The displayed SVG is the live editor implementation, not a licensed reproduction or certification of an IEC or IEEE database glyph. Verify the exact official entry and project edition before issuing work.
Logical terminals
| Logical ID | Editor terminal name |
|---|---|
| l1 | L1 |
| l2 | L2 |
| neutral | Neutral |
| ground | Ground |
Where the EV Charger Outlet (NEMA 14-50) symbol is used
- Residential garages: dedicated NEMA 14-50 outlet on a 50 A, 240 V branch circuit for overnight Level 2 EV charging
- Multi-unit residential (apartment) parking: individual NEMA 14-50 circuits metered separately per unit for EV charging at parking stalls
- Workplace charging stations: NEMA 14-50 outlets or hardwired EVSE units at employee parking lots provide Level 2 charging during work hours
- RV parks and campgrounds: NEMA 14-50 outlets also serve 50 A RV hookups, and portable EV chargers use the same receptacle for opportunistic vehicle charging
- Commercial parking garages with EV charging infrastructure: NEMA 14-50 outlets with networked EVSE management for billing and load management
- Electrical panel load calculations: NEMA 14-50 EV circuits appear on service entrance calculations to determine total connected load and panel sizing per NEC Article 220
Key facts
- The NEMA 14-50 EV Charger Outlet provides 240 V AC at 50 A (9.6 kW maximum, 7.68 kW at 80% continuous) via four pins: L1 (hot leg 1), L2 (hot leg 2), Neutral, and Ground, per NEMA WD-6 and NFPA 70 NEC Article 625.
- NEC 625.40 requires EV branch circuits to be rated at 125% of the EVSE continuous load; a 32 A EVSE requires a 40 A circuit; a 40 A EVSE requires a 50 A circuit with a NEMA 14-50 outlet.
- The four pins in the schematic block are: L1 (x=22,y=0), L2 (x=22,y=44), Neutral (x=0,y=22), and Ground (x=44,y=22), mirroring the NEMA 14-50 physical slot positions (horizontal X/Y slots, vertical W slot, round ground).
- IEC countries use IEC 62196-2 Type 2 (Mennekes) connectors at 230/400 V for Level 2 EV charging — not NEMA 14-50; the two systems are physically and electrically incompatible.
- A dedicated NEMA 14-50 circuit requires 6 AWG copper wire for 50 A (NEC 310.12), a 2-pole 50 A breaker, and conduit or THWN-2 cable run from the main panel to the garage outlet.
- Smart EVSE units (e.g., ChargePoint, Juicebox, Wallbox) plugged into a NEMA 14-50 outlet communicate load control signals on the J1772 Control Pilot (CP) wire — a 1 kHz PWM signal — to the vehicle's onboard charger to set maximum charging current.
- NEC 2023 Article 625.54 requires GFPE (Ground Fault Protection for Equipment) for all EV branch circuits; some NEMA 14-50 installations use a GFCI breaker or the EVSE's built-in GFCI to satisfy this requirement.
Diagrams that use this symbol
Frequently asked questions
What does the EV charger outlet symbol mean in a wiring diagram?
The EV charger outlet symbol marks the location of a NEMA 14-50R receptacle on a dedicated 240 V, 50 A branch circuit for Level 2 electric vehicle charging. The four-pin block (L1, L2, Neutral, Ground) shows the circuit connections required to install a portable or hardwired Level 2 EVSE per NEC Article 625.
What does the NEMA 14-50 EV outlet symbol look like?
The NEMA 14-50 outlet symbol is drawn as a rectangle with four pins: L1 and L2 (top and bottom, 240 V hot legs), Neutral (left), and Ground (right). On electrical floor plans it may appear as a circle with an 'EV' label or a car-with-plug icon. The NEMA 14-50 physical outlet has two horizontal slots (hot legs), a vertical slot (neutral), and a round hole (ground).
What voltage and current does a NEMA 14-50 EV outlet provide?
A NEMA 14-50 outlet provides 240 V AC between the L1 and L2 hot legs at up to 50 A. Per NEC 625.40 the continuous load limit is 40 A (80% of 50 A), delivering up to 9.6 kW of Level 2 charging power. A typical EV onboard charger draws 7.2 kW (30 A) to 9.6 kW (40 A) from this outlet.
What is the difference between a NEMA 14-50 and a NEMA 6-50 EV outlet?
NEMA 14-50 is a 4-wire outlet (L1, L2, Neutral, Ground) at 250 V / 50 A and is the most common EV charging receptacle because most EVSE units require or prefer a neutral conductor. NEMA 6-50 is a 3-wire outlet (L1, L2, Ground only — no Neutral) at 250 V / 50 A, used for welders and some older EVSE units. Both deliver the same 240 V between the two hot legs.
What circuit breaker size is required for a NEMA 14-50 EV outlet?
A NEMA 14-50 outlet requires a 2-pole 50 A circuit breaker and 6 AWG copper conductors (L1, L2, Neutral, Ground) per NEC 310.12. The breaker must be 50 A to match the outlet rating. However, the continuous EVSE load must not exceed 40 A (80% of the breaker rating) per NEC 625.40.
What is the difference between NEMA 14-50 and IEC Type 2 for EV charging?
NEMA 14-50 is the North American 240 V, 50 A, 4-wire standard for Level 2 EV charging, governed by NFPA 70 (NEC). IEC Type 2 (Mennekes, IEC 62196-2) is the European 230/400 V Mode 3 connector with dedicated Control Pilot (CP), Proximity Pilot (PP), and Protective Earth (PE) signal conductors. They are physically incompatible and governed by different standards; a vehicle sold in North America cannot plug into a Type 2 outlet without an adapter.
Does the NEMA 14-50 outlet need GFCI protection for EV charging?
NEC 2023 Article 625.54 requires GFPE (Ground Fault Protection for Equipment) on all EV branch circuits. This can be provided by a GFCI breaker in the panel, an in-line GFCI device, or the built-in GFCI electronics in most modern Level 2 EVSE units. GFPE trips at 30 mA (equipment protection level) per NEC 210.8 interpretations for EV circuits.
Related symbols
- 240V Outlet symbol
- Double-Pole Breaker symbol
- Hot Tub Disconnect symbol
- Range / Dryer Outlet symbol
- LiPo Charger Module (TP4056) symbol
- USB Outlet symbol
Physical breadboard, PCB, and panel mapping
No universal physical profile is published for this symbol yet. Create a versioned custom part from the exact manufacturer dimensions and terminal map before fabrication.
Place the EV Charger Outlet (NEMA 14-50) symbol directly on a wiring diagram or schematic in the free online editor — no download required.