Tesla Gen 2 Mobile Connector Adapter Decision Matrix (2026)
TL;DR
- If you know your outlet, you know your adapter. Match the NEMA number on your receptacle to the Tesla Gen 2 Mobile Connector adapter with the same number.
- Six adapters cover the common North American home and RV receptacles: 5-15, TT-30, 10-30, 14-30, 6-50, 14-50. Five of those (5-15, 10-30, 14-30, 6-50, 14-50) are Tesla-official Gen 2 accessories. TT-30 is a third-party (WenStorm) adapter — Tesla does not currently list an official TT-30 in its Gen 2 NEMA lineup.
- The attached adapter signals its type to the Mobile Connector, which sets the current limit accordingly: 12A on 5-15, 16A on 5-20, 24A on 10-30 and 14-30, and 32A on 6-50 and 14-50. The Mobile Connector is capped at 32A across both Gen 2 and Gen 3.
- These adapters are Tesla Gen 2 Mobile Connector accessories only. They are not universal EVSE inputs and do not work on non-Tesla portable chargers.
You have a Tesla, an outlet, and a question: which adapter do I actually need? Answer the outlet question first, and the adapter falls out of the answer.
The decision matrix: outlet in, adapter out
Identify the outlet on your wall. Read across the row. That is the adapter you need.
| Outlet | Voltage | Circuit rating | MC current | Input power | Tesla-official adapter? | Typical use | Note |
|---|---|---|---|---|---|---|---|
| NEMA 5-15 | 120V | 15A | 12A | ~1.4 kW | Yes | Standard household outlet | Slowest option; adapter included with current U.S. Mobile Connector |
| NEMA 5-20 | 120V | 20A | 16A | ~1.9 kW | Yes | 20A household / light commercial | Often overlooked; T-slot neutral distinguishes it from 5-15 |
| NEMA TT-30 | 120V | 30A | 24A* | ~2.9 kW* | No — third-party | RV pedestal, campground | Tesla does not list an official TT-30 in its Gen 2 lineup; verify the third-party adapter's signaled current |
| NEMA 10-30 | 240V | 30A | 24A | ~5.8 kW | Yes | Legacy 3-prong dryer outlet (pre-1996) | Non-grounding configuration — inspect the existing circuit condition first |
| NEMA 14-30 | 240V | 30A | 24A | ~5.8 kW | Yes | Modern 4-prong dryer outlet (post-1996) | Four-wire with separate ground |
| NEMA 6-50 | 240V | 50A | 32A | ~7.7 kW | Yes | Welder / workshop circuit | No neutral pin |
| NEMA 14-50 | 240V | 50A | 32A | ~7.7 kW | Yes | Dedicated EV / RV pad / range circuit | Adapter included with current U.S. Mobile Connector |
Input power is calculated as voltage × Mobile Connector current at nominal supply. Per-model miles-per-hour figures vary — Tesla's current adapter documentation lists a range from roughly 20 mi/hr (Model X on 14-50) to 30 mi/hr (Model 3 on 14-50); defer to the vehicle's charging screen for the real-time rate. * TT-30 is a third-party adapter; verify the manufacturer's signaled current before use.
How the Tesla Mobile Connector determines charging current
The outlet, the adapter, the Mobile Connector, and the vehicle all affect the final charging rate.
The branch circuit determines how much power is physically available at the outlet. The Tesla Mobile Connector detects the attached NEMA adapter and uses that adapter's signaled type to set the appropriate current limit. The Mobile Connector itself is capped at 32A across both Gen 2 and Gen 3, and the vehicle may impose an additional charging limit.
Per Tesla's current Gen 3 Mobile Connector Owner's Manual, the adapter-to-current mapping is: 12A on 5-15, 16A on 5-20, 24A on 10-30 and 14-30, and 32A on 6-50 and 14-50. Changing to a "bigger" adapter on the same outlet does not increase the electrical capacity of the branch circuit behind it — a 14-50 adapter on a 30A circuit is not a permitted configuration in the first place, because the adapter and the outlet must match.
So the adapter is not passive signalling that the car chooses to ignore, and it is not "the thing that sets the charge rate" independently either. It is a mandatory disambiguator: the Mobile Connector cannot know how much current the outlet is rated for until the adapter tells it, and once told, it enforces the limit associated with that adapter.
Gen 2 vs Gen 3 Mobile Connector: which do I have?
Tesla shipped the Gen 2 Mobile Connector as the standard included accessory from 2016 to 2022, then unbundled it in April 2022 after Elon Musk publicly stated most owners did not need one in the box. In 2023 Tesla introduced the Gen 3 Mobile Connector, which remains the current product.
Both generations use the same NEMA wall-side adapter family and are capped at 32A. The Gen 3 uses a NACS connector on the car-side handle and refined internal thermistors, but shares the same interchangeable NEMA adapter interface and the same 32A ceiling as the Gen 2. If your Mobile Connector says "Gen 2" on the housing or predates late 2023, treat it as Gen 2 for adapter purposes. If it shipped with a new Model 3 or Model Y from mid-2024 onward, it is Gen 3. Either way, these NEMA adapters fit.
Adapter-by-adapter: what each one is for
NEMA 5-15 — the outlet that came with your house
NEMA 5-15 is the common standard 120V household receptacle in the US. Plug the Mobile Connector into it with the 5-15 adapter and you get 12A at 120V, which is roughly 2 to 3 miles of range per hour depending on the vehicle. Slow, but widely available. The 5-15 adapter ships with the current U.S. Mobile Connector, so most Tesla owners already own it. WenStorm sells it as a replacement.
NEMA TT-30 — RV parks and campgrounds (third-party adapter)
The TT-30 looks like a 3-prong household outlet stretched sideways. It is 30A but only 120V, so a properly designed TT-30 adapter for the Mobile Connector delivers up to 24A of charge current and about 5 to 7 miles of range per hour, depending on the vehicle.
Tesla does not currently list an official TT-30 adapter in its Gen 2 NEMA lineup. TT-30 solutions for the Mobile Connector are aftermarket. A properly designed TT-30 adapter must signal an appropriate current limit to the Mobile Connector; verify the manufacturer's specifications, and ideally the observed current draw on the vehicle's charging screen, before relying on it. WenStorm's TT-30 adapter is a Gen 2 Mobile Connector accessory built to this pattern.
If you road-trip to state parks or KOAs, a TT-30 adapter is the difference between a full battery by morning and 40 miles of top-up.
NEMA 10-30 — older 3-prong dryer outlets
If your house was built before 1996 and you still have the original dryer receptacle, it is almost certainly a NEMA 10-30. Three prongs, 30A, 240V, with two hot conductors and a neutral but no separate equipment-grounding conductor. The National Electrical Code phased 10-30 out for new construction in the 1996 revision.
Tesla sells an official 10-30 adapter for the Mobile Connector and specifies 24A on that adapter, which delivers about 15 to 18 miles of range per hour on a healthy circuit. Because existing 10-30 installations vary considerably in age and wiring condition, don't treat a matching receptacle alone as proof the circuit is suitable for sustained EV charging. Read our full 10-30 safety walkthrough before ordering, and have the branch circuit inspected if the wiring or receptacle condition is uncertain.
NEMA 14-30 — modern 4-prong dryer outlets
Post-1996 dryer receptacles are the 14-30: four prongs, 30A, 240V, with a real ground pin. This is the most common target for at-home Tesla charging without an install, because you are borrowing an existing 30A circuit the laundry room already uses. Expect 24A and about 15 to 18 miles per hour, matching the 10-30 in speed but with the safer grounding scheme.
NEMA 6-50 — welder outlets and workshops
The 6-50 is common in workshops and garages that hosted a stick welder or plasma cutter. Three prongs, 50A, 240V, no neutral. On a Mobile Connector it pulls the full 32A, delivering 20 to 24 miles of range per hour. If your garage already has one wired to a 50A breaker with proper conductors, you have a Level 2 charging outlet without an electrician visit.
NEMA 14-50 — dedicated EV outlets and RV pads
The 14-50 is the default Tesla home-charging outlet. Four prongs, 50A, 240V, with neutral and ground. It is what electricians install when a homeowner asks for "a Tesla plug in the garage," and it is the standard RV pad receptacle at campgrounds. On the Mobile Connector, 32A. 20 to 24 miles per hour. If your install is fresh, insist on a spec-grade or industrial-grade receptacle — the residential-grade 14-50 has a documented history of thermal failure under EV-continuous load.
Common questions
Which adapter comes in the Tesla box? Tesla's current U.S. Mobile Connector ships with both the NEMA 5-15 and NEMA 14-50 adapters. Other NEMA adapters — 5-20, 6-15, 6-20, 10-30, 14-30, and 6-50 — are available as official Gen 2 accessories, sold individually or as a seven-adapter bundle. TT-30 is not in Tesla's official Gen 2 lineup; TT-30 adapters for the Mobile Connector are third-party products.
Do I need the 6-50 if I already own the 14-50? Only if you actually have a 6-50 receptacle. The 14-50 adapter does not fit a 6-50 outlet (different pin count and geometry), and 3-to-4-prong "converter" adapters for EV charging are a bad idea because they either fabricate a neutral or bond neutral to ground at the plug — both are safety compromises. Match the adapter to the outlet, one to one.
What about 10-30 safety on a pre-1996 dryer outlet? The 10-30 is a non-grounding configuration — two hots and a neutral, with no separate equipment-grounding conductor. Because 10-30 installations vary in age and condition, a matching receptacle alone is not evidence that the branch circuit is suitable for sustained EV charging. Tesla sells an official 10-30 adapter (24A on the Mobile Connector), but if the wiring or receptacle condition is uncertain, have the circuit inspected before relying on it, and price a 14-30 upgrade if the panel run is short.
Can I use these adapters with a non-Tesla EV or a non-Tesla portable charger? No. These are Tesla Mobile Connector accessories with a Tesla-specific handle. They are not universal EVSE inputs. A Bolt or Ioniq owner needs a J1772-native portable EVSE with the corresponding NEMA plug, not a Tesla adapter with a J1772 pigtail.
Does the adapter set the charge rate? The attached adapter signals its NEMA type to the Mobile Connector, and the connector then enforces the corresponding current limit — 12A for 5-15, 24A for 10-30 and 14-30, 32A for 6-50 and 14-50 (Gen 3 manual). So the adapter is not a passive tag the car may ignore, and it is not an amplifier either. It is a mandatory disambiguator: it tells the Mobile Connector what current is legal for that outlet, and the connector caps to that value. The branch circuit ultimately determines what the outlet can physically deliver, and the vehicle may impose an additional limit.
Not sure which outlet you have?
Take a photo of the receptacle and use the Solution Finder. It walks the outlet-identification decision tree in under a minute and lands you on the exact adapter your circuit accepts.
Still not sure which is the correct fit for your car?
Real questions from EV owners
Join the EV Adapters & Connector Compatibility discussion →
