Homeowners and EV drivers often ask, “What outlet can I use to charge my electric car?” In this guide we’ll cover all common NEMA outlets for EV charging – from basic 120V Level 1 plugs to 240V Level 2 outlets. We’ll explain the configuration, amperage, voltage, wiring, and typical charging speeds for each. You’ll learn which EV chargers (and adapters) are compatible with each outlet, and get installation tips (think breakers, wiring, weatherproofing). We also compare costs so you can plan your EV outlet installation budget. Let’s dive in!
| Outlet | Voltage | Max Amps | Breaker (A) | Hot Wire (AWG) | Ground Wire (AWG) | Max EV Power (kW) |
|---|---|---|---|---|---|---|
| NEMA 5-15 | 120V | 15 | 15 | 14 | 14 | 1.3 |
| NEMA 5-20 | 120V | 20 | 20 | 12 | 12 | 1.7 |
| NEMA 6-15 | 240V | 15 | 15 | 14 | 14 | 2.8 |
| NEMA 6-20 | 240V | 20 | 20 | 12 | 12 | 3.8 |
| NEMA 6-30 | 240V | 30 | 30 | 10 | 10 | 5.7 |
| NEMA 10-30 | 240V | 30 | 30 | 10 | 10 | 5.7 |
| NEMA 14-30 | 240V | 30 | 30 | 10 | 10 | 5.7 |
| NEMA 6-50 | 240V | 50 | 50 | 6 | 10 | 9.6 |
| NEMA 14-50 | 240V | 50 | 50 | 6 | 10 | 9.6 |
The NEMA 5-15 is the typical 3-prong household outlet. It provides 120 volts at up to 15 amps. For EV charging, this means about 1.3 kW of power – roughly 3–5 miles of range per hour. It’s the slowest option (Level 1 charging), best for overnight or emergency charging. For example, charging a Tesla Model 3 fully could take 30+ hours on a 5-15 outlet.
Configuration: Two flat vertical blades (hot and neutral) and a round/D-shaped ground.
Wiring: Hot (black or red), Neutral (white), and Ground (green/copper). Use 14 AWG wire and a 15A breaker.
Typical Use: Plug-in Level 1 portable EVSE (charging cable) fits into this outlet. Many EVs come with a Level 1 cord. It’s handy in a pinch, but charging is very slow.
Charger Compatibility: Any 120V EVSE or the portable car charger in “Mode 2.” For example, AmazonBasics sells a 16A Level 1 charger that works with NEMA 5-15 outlets. Tesla’s Mobile Connector can also plug into 5-15 (with its adapter) for slow charging.
Installation Tips: If using a 5-15 for EV, ensure the outlet and wiring are in good condition. Use a dedicated circuit if possible (other loads like appliances should be separate) and check with an electrician.
ETL‑certified, 16 ft cable, adds ~4–5 miles/hour. Highly rated (4.4★).
Universal J1772 plug, 20 ft cord—good basic option with reliable build.
Compact 20 ft cable, great value (~$106), good for smaller batteries.
The NEMA 5-20 looks like a 5-15 but one prong is horizontal. It’s wired for 20 amps at 120V, allowing up to 1.7 kW (about 4–5 miles per hour). Few EVSE units use it specifically, but it can speed up Level 1 charging a bit.
Configuration: One horizontal slot, one vertical slot (hot wires), plus ground.
Wiring: Use 12 AWG wire and a 20A single-pole breaker. Circuit is still single-phase 120V.
Typical Use: Same as 5-15 but rated for heavier loads (usually kitchen appliances). It can support a higher-current Level 1 charger.
Charger Compatibility: Some portable EV chargers support 20A draw and can come with a 5-20 plug or use an adapter. For instance, compact Level 1/2 chargers (8–16A) might include a 6-20 plug that can be swapped for a 5-20 adapter.
Installation Tip: If you have a 5-15 circuit already and need a bit more power (and space in the panel), an electrician can upgrade it to a 5-20 (15A → 20A breaker and 12 AWG wiring). Always ensure a dedicated circuit breaker and avoid multi-use outlets.
(Same as NEMA 5‑15 models above with included 5‑15/5‑20 adapters.)
For example, Lectron and Morec chargers work if fitted with a 5‑20 plug or adapter.
The NEMA 6-15 is a 240-volt outlet with 15A capacity (2.8 kW output). It has two horizontal hot pins and a ground pin (no neutral). It’s much faster than 5-15 – up to roughly 12–16 miles of range per hour – but still at the low end for Level 2.
Configuration: Two horizontal prongs (hot wires) and a round grounding hole. No neutral.
Wiring: Hot (black and red), Ground (green). Use 14 AWG wire to a 15A double-pole breaker.
Typical Use: Occasionally used for small welders or shop tools; not common for EVs but can be used.
Charger Compatibility: You’d need a Level 2 EVSE that draws 12–15A. For instance, some portable 16A EV chargers (like basic J1772 cords) can plug into 6-15. Tesla’s older Gen 1 mobile connector included a 6-15 adapter.
Installation Tip: Installing a 6-15 outlet requires adding a 240V circuit. Because it’s a 15A circuit, it’s continuous-rated at 12A for EV use. This outlet adds about 12–16 miles per hour of range. It’s an inexpensive upgrade (similar wiring and breaker as a 5-15).
Use any 16 A Level 2 charger that supports 6‑15 plugs—many are similar to the 6‑20 options below.
The NEMA 6-20 is a 240V outlet rated for 20A (3.8 kW, ~15 miles/hour). Its shape is one horizontal blade and one vertical blade plus ground. It’s a popular DIY solution for modest Level 2 charging.
Configuration: One horizontal, one vertical prong (hot wires) and a round ground pin.
Wiring: Two hot (usually black & red) and ground. Use 12 AWG wiring with a 20A double-pole breaker.
Charging Speed: At 240V×16A (continuous), it delivers ~3.8 kW. That’s about 12–15 miles of range per hour, which cuts charging time in half versus a 5-15.
Typical Use: Many DIYers install a 6-20 outlet in their garage as a mini Level 2 station. It’s often found in workspaces and garages.
Charger Compatibility: Many plug-in EV chargers use a 6-20 plug. For example, some AmazonBasics and Lectron portable EVSEs offer a NEMA 6-20 connection. Some universal chargers come with a 6-20 cable, or you can use a 6-20 adapter.
Wiring Tip: Follow the diagram: connect both hot wires to the breaker, neutral is not used, and the ground to the panel. A correct wiring ensures the outlet’s hot slots each feed to a breaker pole. Always use a dedicated 20A breaker.
Home Mobile EV Charging Station for J1772 BEVs/PHEVs 110V-240V(Black)
This product adopts NEMA 6-20 Plug, which can accept a 240V input voltage.
Rugged charger by DeWalt, includes interchangeable 5‑15 adapter, ideal for jobsite/garage.
The NEMA 6-30 is a robust 240V outlet rated 30A. It looks like two parallel horizontal blades and a ground hole (no neutral). It can deliver up to 7.2 kW (30A), though EVs generally draw 24A (5.7 kW) continuous on a 30A circuit (NEC 80% rule).
Configuration: Two horizontal hot blades and a round ground. No neutral.
Wiring: Use 10 AWG wire with a 30A double-pole breaker.
Charging Speed: At 24A continuous, it provides about 6–7 kW, roughly 20–25 miles per hour of charge.
Typical Use: Originally for welders and heavy tools, but some EV owners use it. Tesla’s older charger offered a 6-30 adapter.
Charger Compatibility: Some portable EV chargers (like the Lectron 30A EVSE) come with a NEMA 6-30 plug. Others allow swapping plugs. Many chargers work up to ~24A, which is safe on a 6-30.
Caveat: 6-30 requires proper wiring and a grounded circuit. If upgrading an old 10-30 (see below), consider installing a 6-30 or 14-30 for the grounded option.
Use chargers like Lectron 30 A EVSE, or Duosida 30 A Level 2 Charger, both plug into 6‑30 outlets—include similar specs and cable lengths to ensure safe continuous draw.
Recommended:
The NEMA 10-30 is an old 240V, 30A outlet (common on older dryer circuits). It has two hot angled blades and an L-shaped neutral pin – no dedicated ground. Because it lacks ground, it’s outdated and not up to modern code for EVs. It can provide around 5.7 kW (24A) and ~20 miles/hour, but use with caution.
Configuration: Two hot angled prongs and one L-shaped neutral. Ground wire is tied to neutral on the panel (not safe for EVs).
Charging Speed: About 5.7 kW (24A continuous) ≈ 20 miles/hour.
Charger Compatibility: Tesla offered a 10-30 adapter in early mobile connectors. Some generic EVSEs can use a 10-30 if properly wired. However, Tesla’s newer mobile chargers do not include a 10-30 adapter.
Safety Note: This outlet is NOT recommended for EV charging. It has no real ground, increasing shock risk. NEC forbids new installations of 3-prong 10-30. If you have one, consider upgrading to a modern outlet.
Advice: If you encounter a NEMA 10-30, the safest upgrade is a NEMA 14-30 (adds a real ground).
Not recommended—no grounded outlet. Even legacy EVSE chargers that used 10‑30 plugs (e.g., old Tesla mobiles) are outdated and less safe. Use 14‑30 instead.
The NEMA 14-30 is a modern 240V, 30A outlet with four prongs (two hots, neutral, ground). It’s often found as an electric dryer outlet. With up to 7.2 kW output, it’s a great Level 2 option.
Configuration: Two vertical hot slots, one L-shaped neutral slot, and one round ground.
Wiring: Use 10 AWG wire on a 30A double-pole breaker. All four wires are connected, but EVSEs typically use only the two hots and ground.
Charging Speed: Up to 7.2 kW (30A). Many EVs will draw 24A continuous, giving ~20 miles/hour. Some EVSEs allow full 30A draw. Either way, it’s much faster than 5-15 or 6-20.
Typical Use: This is one of the best DIY choices for home EV charging. If your garage has a dryer outlet (14-30), you may just need an adapter. Many EV owners keep a 14-30 adapter on hand.
Charger Compatibility: Many mobile Level 2 chargers include a 14-30 adapter. For example, Lectron and Tesla’s Gen 1 Mobile Connector have 14-30 adapters. Also, heavy-duty portable EVSEs are available with a 14-30 plug.
Tip: If switching from a 10-30, use the same breaker but install a 14-30 receptacle. This adds safety (grounded) with minimal cost.
Example wiring of a NEMA 14-50 (240V, 50A) outlet. Note the two hots, one neutral, and one ground (green) wire. Proper grounding and a weatherproof cover (if outdoors) are important for safety.
The NEMA 14-50 is the gold standard for home EV charging. It’s a 240V, 50A outlet (four-prong: 2 hots, 1 neutral, 1 ground). Most Tesla and many other Level 2 chargers use it. With a 50A circuit (usually set to 40A continuous) it delivers 7.6–9.6 kW, which translates to 25–30 miles of range per hour. That means a full charge overnight for any EV.
Configuration: Two vertical hot blades, one horizontal neutral slot, and one round ground.
Wiring: Connect two hots, one neutral (unused by EV load except possibly in some cables), and a ground. Use 6 AWG wire with a 50A double-pole breaker. Ensure neutrals and grounds are properly attached.
Charging Speed: Typically set to 40A continuous (NEC limit), giving 9.6 kW and ~30 miles/hour of charge. Some EVSE can draw 50A for ~12 kW, but often the breaker limits to 40A.
Typical Use: Very common for EVs (and RVs). Tesla’s Wall Connector and many Level 2 chargers (ClipperCreek, ChargePoint Home, etc.) plug into 14-50. Even if your EVSE doesn’t have a 14-50 plug, adapters are available (e.g. Tesla’s mobile charger with 14-50 adapter).
Outdoor/Weatherproofing: If outdoors, use a weather-resistant (WR) cover rated for the outlet, and a GFCI breaker or GFCI outlet as required by code.
Installation: Because this is a high-power circuit, many homeowners hire an electrician. Expect to use heavy gauge wire and possibly a panel upgrade. As a rule of thumb, a 40A EVSE needs a 50A breaker (125% rule).
Charger Compatibility: Tesla’s Mobile Connector and many EVSEs (Lectron, JuiceBox 40, etc.) support 14-50. This outlet “allows most EVs to be fully charged overnight”. For example, the Leviton 1450W is a popular 14-50R EV receptacle designed for 50A circuits.
Recommended:
Portable charger compatible with all J1772 EVs.
Offers flexibility with dual charging levels and plug types.
Designed specifically for Tesla models.
Provides fast charging with a 16 ft cable for convenience.
Suitable for J1772 EVs and plug-in hybrids.
ETL certified for safety and reliability.
Compatible with all NACS electric vehicles.
Offers dual-level charging options for flexibility.
Features WiFi connectivity and app control for monitoring.
Compatible with all Tesla models.
High-powered home charging station for Tesla models.
Supports both plug-in and hardwired installations.
Energy Star and ETL certified for efficiency and safety.
Compatible with J1772 EVs.
Offers app control and WiFi connectivity.
Suitable for all J1772 EVs.
The NEMA 6-50 is a 50A, 240V outlet (no neutral) often used for welders. It delivers the same power as a 14-50 (9.6 kW at 40A). It has only three prongs (two hots, one ground).
Configuration: Two vertical hot slots and a round ground hole. (No neutral.)
Wiring: Two hots and ground wired to a 50A double-pole breaker with 6 AWG wiring.
Charging Speed: Up to 9.6 kW (40A). Many EV chargers (like the Lectron 40A or JuiceBox 40) plug into 6-50.
Typical Use: Used by some fast-home EV setups. Since it lacks a neutral, it’s only 240V.
Charger Compatibility: The Tesla Mobile Connector Gen 2/3 does not use 6-50 (no neutral), but chargers like the Enphase IQ (50A) or newer high-power EVSE can use 6-50. It’s “ideal” for fast charging dozens of miles per hour, just like 14-50.
Outdoor Use: Same weatherproofing advice as 14-50. Use a WR receptacle and GFCI if outdoors.
Installation Tip: Because 6-50 doesn’t use the neutral, it’s slightly simpler wiring. In many homes, an electrician can install a 6-50R outlet on a 50A breaker with minimal fuss (though still expensive gauge wire). The Hubbell 5300 frames are common for 6-50 outlets.
Dedicated Circuit: Each EV outlet must have its own dedicated breaker – no shared loads. Use a double-pole breaker for 240V circuits. Remember the 80% rule: size the breaker 125% above the charger’s continuous current. For example, a 40A EVSE needs a 50A breaker.
Breaker Compatibility: Ensure the breaker type matches the outlet. For a NEMA 6-20 or 14-30 use a 2-pole 20A/30A breaker, respectively. Do not put a smaller breaker on a higher-rated outlet. Always follow NEC rules.
GFCI & Weatherproofing: The NEC requires GFCI protection on most outdoor outlets and outlets in damp areas. For outdoor EV outlets, use a weatherproof enclosure (in-use cover) and either a GFCI breaker or receptacle. A weatherproof, sealed cover is a must if outdoors.
Wiring & Gauge: Heavier amps require thicker wire. Using 6 AWG vs 10 AWG dramatically increases cost. For example, a new 14-50 outlet (50A) needs 6 AWG copper, which can add significant cost in materials.
Cost Comparisons: Installing a 120V 5-15 outlet is cheap (often existing). Upgrading to 240V costs more: expect $1,000–$3,000 for a 14-50 installation (outlet, wire, labor). If you already have a 14-50 (e.g. for an RV), confirming its suitability might be only $50–$800. Running new high-amp circuits or upgrading your panel will push costs higher.
Future-Proofing: If budget allows, installing a NEMA 14-50 now (40A output) is often worth it, as EV charging speeds and demand increase. You can always plug a 6-30 or 6-20 adapter into a 14-50 later if needed.
Electrician vs DIY: Large 240V circuits usually require an electrician for code compliance. Small outlets (5-15 or 6-20) might be DIY for an experienced homeowner, but check local regulations. Always use the proper box, conduit, and connectors.
NEMA 5-15: 120V, 15A (1.3 kW). Level 1 charging (~4 miles/hr). Common for any EV’s portable charger (J1772).
NEMA 5-20: 120V, 20A (1.7 kW). Faster Level 1. Use with 16A EVSE on dedicated 20A circuit.
NEMA 6-15: 240V, 15A (2.8 kW). Entry-level Level 2 (~12–16 miles/hr). Rare, but found in shops.
NEMA 6-20: 240V, 20A (3.8 kW). DIY Level 2 (~15 miles/hr). Many portable chargers fit 6-20.
NEMA 6-30: 240V, 30A (5.7 kW). High-end Level 2 (~20+ miles/hr). Requires 30A circuit.
NEMA 10-30: 240V, 30A (5.7 kW). Older 3-prong dryer outlet. Outdated (no ground).
NEMA 14-30: 240V, 30A (7.2 kW). Modern dryer outlet with ground. Great Level 2 (~25 miles/hr).
NEMA 6-50: 240V, 50A (9.6 kW). High-power outlet (like welder). Fast Level 2 (~30 miles/hr).
NEMA 14-50: 240V, 50A (9.6 kW). Standard EV/LV outlet. Fastest common home charging (25–30 mi/hr).
Drive On Power may earn a small commission when you purchase through links on our site. As an Amazon Associate, we earn from qualifying purchases—at no extra cost to you.
© 2025 Drive on Power. All Rights Reserved.
