Amps · Circuits · Plug-in vs hardwired

40 A vs 48 A EV Charger: Do You Need the Extra Amps?

Should you buy a 48 A charger or stick with 40 A? This page sets out the breaker each one needs, the power and range per hour, why 48 A means hardwiring, and when the extra current actually helps. Not electrical advice; a licensed electrician sizes your circuit after a load calculation.

Outlet first, charger second. Never use a household extension cord for EV charging, and never run a cord from a balcony, window, or patio door to the parking stall. If the receptacle is in the wrong place or the wrong type, the fix is a new receptacle installed by a licensed electrician. More: extension-cord safety.

A 48 A charger sounds like an upgrade over 40 A, but for most people charging overnight at a condo or rental stall it changes very little. It also changes the install: 48 A can’t run through a NEMA 14-50 plug, so it means a hardwired charger on a bigger circuit. Here’s the arithmetic and when the extra amps are actually worth it.

Charger setting, circuit and range added per hour

Charger settingBreaker (about 80% rule)How it connectsPower at 240 VRange per hour*Energy in 8 hours
24 A30 APlug-in or hardwired5.8 kWabout 29 kmabout 46 kWh
32 A40 APlug-in or hardwired7.7 kWabout 38 kmabout 61 kWh
40 A50 ANEMA 14-50 plug-in or hardwired9.6 kWabout 48 kmabout 77 kWh
48 A60 AHardwired only11.5 kWabout 58 kmabout 92 kWh

*Illustrative arithmetic using an example car that uses 20 kWh per 100 km, before charging losses. Cold weather, your car’s onboard charger and battery temperature all reduce real numbers.

Most daily commutes need well under 20 kWh. At 40 A, that’s about two hours on the charger. Even at 32 A, a normal overnight session covers a typical day of driving with room to spare.

Your car may not take 48 A anyway

The charger offers current; the car’s onboard charger decides how much it accepts. Many EVs accept somewhere between about 7 and 11.5 kW on Level 2. If your car tops out at 7.7 kW (32 A), a 40 A or 48 A charger won’t add any speed. Check the AC charging rate in your owner’s manual or the maker’s spec sheet before paying for a larger circuit.

When 48 A is worth it, and when 40 A is the better buy

SituationBetter choiceWhy
Renting, or a condo that prefers removable equipment40 A plug-in (or less)A NEMA 14-50 plug-in moves with you; 48 A must be hardwired and stays behind
100 A service or a tight condo electrical room32 A or 40 A, or load managementA 60 A circuit may not fit; see 100 A panel sizing
Car accepts 11 kW+ and you drive long distances most days48 A hardwiredRecovers about 10 more km per hour than 40 A
Two EVs sharing one charger on short overnight windows48 A hardwired, if the panel allowsShorter sessions per car help when time is tight
Ontario ultra-low overnight rateUsually 40 A is enoughThe overnight window is long enough for most daily driving at 32–40 A: Ontario overnight rate

Outlet and amp caveats

  • A NEMA 14-50 receptacle is on a 50 A circuit at most, so plug-in chargers stop at 40 A continuous (Canadian Electrical Code Rule 86-302, about 80% of the breaker).
  • A 48 A setting needs a hardwired charger on a 60 A circuit with wiring sized for it. Higher settings need a larger circuit still. Your electrician sizes the circuit after a load calculation.
  • Many adjustable chargers can be set lower than their maximum. A charger rated for 48 A or more can still be set to 32 or 40 A to fit a smaller circuit.
  • Never raise a charger’s setting above what the circuit is rated for, and never charge through a household extension cord or adapter chain.
  • New circuits need a licensed electrician and the permit your province requires (in Ontario, an ESA permit).

Caveats

  • Range figures are illustrative arithmetic, not a test. Winter cold can cut real-world charging speed and range noticeably.
  • Product amp ratings come from current Amazon.ca listings; check the manual for the exact settings on your unit.
  • Condo boards and landlords may limit the circuit size or require load management regardless of what the charger supports.

FAQ

Is a 48 A EV charger worth it over 40 A?

For most overnight home charging, no. 48 A adds about 10 km of range per hour over 40 A in our example, and only if your car accepts 11.5 kW. It also needs a hardwired install on a 60 A circuit.

Can a 48 A charger plug into a NEMA 14-50 outlet?

Not at 48 A. A NEMA 14-50 is on a 50 A circuit at most, so plug-in chargers are limited to 40 A continuous. A 48 A setting needs a hardwired charger on a 60 A circuit.

What breaker do I need for a 40 A EV charger?

Usually a 50 A breaker, following the Canadian Electrical Code continuous-load rule of about 80%. Your electrician confirms wire size and panel capacity.

How do I know how many amps my EV accepts?

Check the AC charging rate in your owner’s manual or the manufacturer’s spec sheet. A car rated at 7.7 kW gets nothing extra from a charger above 32 A.

Can I set a 48 A charger to 40 A or 32 A?

Many adjustable chargers can be set lower to match a smaller circuit. The installer sets it on hardwired units; check the manual for your model.

Chargers for 40 A plug-in or higher hardwired setups

Made in Canada first, then Canadian brand, then a labeled imported option. Approximate CAD — confirm price, plug type, stock, Canada safety mark, and Ships from Amazon on Amazon.ca before you buy.

Made in Canada

Grizzl-E Mini Connect weatherproof Level 2 EV charger
3.8 · 53 ratings

Made in Canada · Best overall

Ships from Amazon

Recently ~$600 on Amazon.ca (list ~$650) — confirm current price

Grizzl-E Mini Connect

Made in Canada portable Level 2, up to 40 A on a 50 A circuit, adjustable down for smaller circuits. Plug-in, so it moves with you. About ~$600.

Grizzl-E Mini Connect on Amazon.ca · ~$600 Available at Amazon.ca
Grizzl-E Classic Connect 40A Level 2 EV charger
4.5 · 93 ratings

Made in Canada

Ships from Amazon

Recently ~$450 on Amazon.ca (list ~$500) — confirm current price

Grizzl-E Classic Connect 40A

Made in Canada NEMA 14-50 plug-in with 40/32/24/16 A settings matched to the breaker. The simplest way to get the full 40 A from a plug-in outlet. About ~$500.

Grizzl-E Classic Connect on Amazon.ca · ~$500 Available at Amazon.ca
Grizzl-E Ultimate 48A hardwired Level 2 EV charger
4.1 · 254 ratings

Made in Canada · 48 A pick

Ships from Amazon

HARDWIRED

Recently ~$600 on Amazon.ca (list ~$650) — confirm current price

Grizzl-E Ultimate 48A (hardwired)

Made in Canada hardwired charger, up to 48 A / 11.5 kW on a 60 A breaker per the listing, adjustable down to 40, 32, 24 or 16 A for smaller circuits. Hardwire kit included; a licensed electrician installs it. About ~$600.

Grizzl-E Ultimate 48A on Amazon.ca · ~$600 Available at Amazon.ca

Canadian brands

FLO Home X3 plug-in Level 2 EV charger with NEMA 14-50 plug
4.4 · 24 ratings

Canadian brand · Plug-in

Ships from Amazon

Québec Écorecharge: up to $600 for an eligible home Level 2 — confirm on quebec.ca (FLO Maison X3 is on the official eligible-models list as of Oct 2026). Not electrical or legal advice.

Plug-in wall (14-50)

FLO Home X3 (plug-in)

Canadian brand, designed and engineered in Canada. Plug-in version: factory set to 40 A on a 50 A circuit, rated -40 °C to 50 °C per the listing. About ~$699.

FLO Home X3 plug-in on Amazon.ca · ~$699 Available at Amazon.ca
FLO Home X3 hardwired Level 2 EV charger
4.4 · 28 ratings

Canadian brand

Ships from Amazon

Québec Écorecharge: up to $600 for an eligible home Level 2 — confirm on quebec.ca (FLO Maison X3 is on the official eligible-models list as of Oct 2026). Not electrical or legal advice.

HARDWIRED

FLO Home X3

Canadian brand — designed and engineered in Canada; we list it as a Canadian brand only. Hardwired version, listed up to 50 A / 12 kW with the output set by your installer to match the circuit. The Canadian-brand option above 40 A. About ~$699.

FLO Home X3 hardwired on Amazon.ca · ~$699 Available at Amazon.ca

Never use a household extension cord or balcony / window drop — outlet + written permission first.

Imported alternative

Useful when Canadian hardware does not fit budget or plug — clearly labeled, not Made in Canada or a Canadian brand.

AIMILER 32A weatherproof Level 2 EV charger
4.6 · 1,228 ratings

Imported alternative

Ships from Amazon

Recently ~$252 on Amazon.ca (list ~$280) — confirm current price

AIMILER 32A

Imported lower-cost plug-in (NEMA 14-50), adjustable 16–32 A on a 20–40 A circuit, 25 ft cable. Not Made in Canada or a Canadian brand. Confirm the Canada safety mark on the listing. About ~$280.

AIMILER 32A on Amazon.ca · ~$280 Available at Amazon.ca

Full outdoor shortlist → · Portable L2 for apartments → · Compare chargers →

Safety non-negotiables

  • No balcony cords or window drops to the parking stall
  • No household extension cords for EV charging
  • Block-heater plugs are not automatic EV approval
  • CSA, cUL, or ETL-C listed EVSE only
  • Licensed electrician for new receptacles or circuits — confirm your province’s permit rules
  • Stop if a plug or cable is hot, discoloured, or tripping the breaker

Disclosure & not-advice note

Affiliate disclosure: NoGarageEV links to Amazon.ca and may earn a commission on qualifying purchases at no extra cost to you. Prices, ratings, and stock change — confirm on the live listing.

Not legal or electrical advice. Timelines, amp figures, and program notes are directional; confirm your lease, condo declaration and by-laws, provincial rules, and the charger manual. NoGarageEV writes Canada-first from Ontario; always confirm with your landlord or board, a licensed electrician, and the official program pages before you rely on anything here.