The short answer
The Tesla Model Y accepts a maximum of 11.5 kW / 48 A on AC, through a NACS port. Buy a 48 A charger on a 60 A two-pole breaker with 6 AWG copper. The Tesla Wall Connector is the cleanest match for a Tesla-only household; the Emporia Pro is the better buy if a J1772 car shares the garage or your panel is tight.
The Model Y is the most common EV in a US driveway, which means it is also the car most often paired with the wrong charger — usually a 40 A unit bought on price, or a Universal Wall Connector bought for a household that owns nothing but Teslas.
The decision is genuinely simple here because the car's number is a round one: 48 A, which is the top of the mainstream charger range. There is no scenario in which a Model Y owner should buy more than 48 A, and only one in which they should buy less — a panel that cannot supply a 60 A circuit.
The constraint: what this car accepts
Everything else on this page follows from one number. The Tesla Model Y's onboard charger accepts a maximum of 11.5 kW, which is 48 amps at 240 volts. No wall charger can exceed it, and a charger rated above it delivers no extra speed.
| Specification | Value | Source |
|---|---|---|
| Maximum AC power accepted | 11.5 kW | Tesla onboard charger specification |
| Maximum AC current at 240 V | 48 A | Tesla onboard charger specification |
| Connector | NACS | Tesla charging support |
| EPA range (2026 Model Y Long Range AWD) | 327 mi | US DOE / EPA fueleconomy.gov |
| EPA efficiency | 27.5 kWh / 100 mi (123 MPGe) | US DOE / EPA fueleconomy.gov |
| EPA published 240 V charge time | 8 hours | US DOE / EPA fueleconomy.gov |
The consequence: the circuit you actually need
Take the car's 48 A ceiling and work backwards. NEC 625.42 classifies EV charging as a continuous load, and NEC 625.41 requires overcurrent protection at not less than 125% of the maximum load — so a 48 A charger needs a 60 A two-pole breaker and 6 AWG copper at the 75 degC column of NEC Table 310.16.
| Item | This car | Why |
|---|---|---|
| Charger output | 48 A | Matches the car's 48 A ceiling exactly |
| Power delivered | 11.5 kW | The lower of the charger's output and the car's limit |
| Breaker | 60 A, two-pole | NEC 625.41 — 125% of a continuous load |
| Copper conductor (conduit, 75 degC) | 6 AWG | NEC Table 310.16 |
| A bigger charger would | deliver nothing extra — this is already the car's ceiling | The lower of the two numbers always wins |
Charge times, with the arithmetic shown
EPA rates the 2026 Model Y Long Range AWD at 27.5 kWh per 100 miles. That single figure lets you calculate any charge time you like, and it is why we show the formula rather than asserting a number.
hours = (miles x 27.5 / 100) / (kW x 0.9)
At 11.5 kW, this car gains about 38 miles of range per hour
The 0.9 allows for AC-to-DC conversion losses in the onboard charger — roughly 10% of what your meter records never reaches the battery. EPA efficiency figure from the US DOE / EPA fueleconomy.gov service, 2026 Model Y Long Range AWD, queried 2026-10-05.
| Charger | Miles added per hour | Hours to add 100 miles |
|---|---|---|
| 16 A (3.8 kW) | 12 | 8h 02m |
| 24 A (5.8 kW) | 19 | 5h 16m |
| 32 A (7.7 kW) | 25 | 3h 58m |
| 40 A (9.6 kW) | 31 | 3h 11m |
| 48 A (11.5 kW) | 38 | 2h 39m |
For context, EPA's own published figure for a full charge at 240 V on this trim is 8 hours.
What to buy for a Tesla Model Y
Our picks for the Tesla Model Y
Both are 48 A units that reach this car's full 11.5 kW. The top pick is a tesla-only household; the alternative is there because most households, and anyone with a tight panel.
A Tesla-only household
Tesla Wall Connector (Gen 3)
If every car in the driveway is a Tesla, this is the cleanest answer: 48 A, a 24 ft cable, and a handle that opens the charge port for you — but it is NACS-only, so a J1772 car needs an adapter every single time.
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Most households, and anyone with a tight panel
Emporia Pro Level 2 EV Charger
The best-balanced 48 A charger for a typical US house: full 11.5 kW hardwired, and the only unit at this price that ships with a whole-home energy monitor so its load management is reading your actual panel rather than guessing.
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Connector and adapters
The Tesla Model Y uses a NACS port (standardized as SAE J3400). Two consequences for home charging: a NACS-handled charger plugs straight in with no adapter, and a J1772 charger — which is most of the installed base — needs a J1772 to NACS adapter.
Our pick there is the A2Z Atom Plug, which carries UL 2252 and CSA certification and an 80 A rating — real headroom over a 48 A home charger. Full comparison on best J1772 to NACS adapters, and the connector landscape on which plug does my EV use.
A Tesla on a J1772 charger — the one to buy
A2Z EV Atom Plug J1772 to NACS Adapter
UL 2252 and CSA certified, 80 A rated. The adapter to buy if a J1772 charger is in your future.
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Tesla Wall Connector, or something else?
The honest answer depends on one question: is every car in the household a Tesla, now and for the next five years?
| Your situation | Buy | Why |
|---|---|---|
| Only Teslas, now and likely later | Tesla Wall Connector | 24 ft cable, the handle opens the charge port, power sharing if you add a second unit |
| A Tesla plus a J1772 car | Tesla Universal Wall Connector, or a J1772 charger plus an adapter | The Universal docks the J1772 adapter in the unit, so nothing is loose |
| A Model Y and a tight electrical panel | Emporia Pro | Load management with an included energy monitor; can avoid a service upgrade |
| You want a non-Tesla app but a NACS handle | ChargePoint Home Flex NACS | Adjustable 16-50 A with a Tesla-shaped plug |
| Budget is the constraint | EVIQO 48 A hardwired | The cheapest route to a genuine 11.5 kW, with an adapter for the NACS handle |
What 48 amps actually gets you
EPA rates the 2026 Model Y Long Range AWD at 27.5 kWh per 100 miles with a published 240 V charge time of 8 hours. At 48 A that is roughly 37 miles of range per hour — so a 40-mile commute is replaced in about an hour and five minutes, and a near-empty car is full overnight with hours to spare.
Which is why the 40 A against 48 A question is less consequential here than it feels. The difference on replacing 100 miles is about half an hour, at 2am. If dropping to 40 A saves you a long 6 AWG pull, take the 40 A charger — see 40 A vs 48 A for the full arithmetic.
The Mobile Connector is not a home charging solution
The Tesla Mobile Connector maxes out at 32 A, which on a Model Y is roughly 7.7 kW — two thirds of what the car accepts. It is the right tool for travel, for a rental, or for a second car that barely moves. As the only charger for a daily-driven Model Y, it is leaving a third of the car's capability unused.
It is also worth knowing that a Mobile Connector plugged into a standard 120 V outlet is doing Level 1 charging — around 5 miles of range per hour per the US DOE. On a 27.5 kWh/100mi car that is about 4-5 miles an hour, which is a trickle, not a charge.