The honest answer is that the product listing does not say. The specification for the EV-ACS3210T lists its six current steps and its screen, and states nothing about whether a chosen step survives being unplugged. So rely on neither behaviour: run the 30-second check below once on your own unit, and build the set-every-time habit that makes the answer stop mattering.
Key Takeaways
- The listing does not state whether the EV-ACS3210T remembers its current step — do not guess either way.
- A 30-second test on your own unit answers it: set 10 A, unplug, replug, read the screen.
- Waking at 32 A is harmless on 40 A and 50 A circuits, and over the ceiling on 30 A and 20 A ones.
- Setting the step at every plug-in makes the memory question irrelevant.
What the Listing Says — and Where It Stops
The published facts are these: the charger adjusts from 10 A to 32 A in six steps — 10, 12, 16, 20, 24 and 32 A — plugs into a NEMA 14-50 outlet, and shows the session on a 1.77-inch screen. Memory behaviour appears nowhere in that list. Across adjustable chargers generally, both behaviours exist — some restore the last step, others return to a default. Which of the two this unit does, only the unit itself or EVDANCE support can say. Guessing is the one option to rule out, because the step is not a preference. It is a safety setting, as the table below shows.
The 30-Second Check
- Set the lowest step. With the unit plugged into its outlet and no car connected, select 10 A and confirm the screen shows it.
- Unplug it. Pull the plug from the outlet and leave the unit dead for a minute — roughly the gap of moving it between outlets.
- Plug back in and read the screen before connecting the car. If it shows 10 A, your unit remembers. If it shows 32 A or any other step, it defaults — and you now know its rule.
- Repeat once after an overnight gap if the answer matters: a portable lives unplugged between trips, so long-gap behaviour is what your routine meets.
That is the whole test: no tools, and no session started on an unknown step. Run it once when the unit arrives, and again after any outage that surprises you.
Why It Matters Most on Smaller Circuits
EV charging is a continuous load, so the National Electrical Code sizes the breaker at 125% of the charging current — capping the step each circuit may run. What a return to the top step means depends on which circuit the unit wakes up on:
| Circuit the unit is plugged into | Highest step allowed (125% rule) | If the unit wakes at 32 A |
|---|---|---|
| 50 A breaker | 40 A | Within limits — 32 A is below the ceiling |
| 40 A breaker | 32 A | Exactly the pairing the code sizes for — fine |
| 30 A breaker | 24 A | Over the ceiling — more than the circuit allows |
| 20 A breaker | 16 A | Double the allowed step — expect trips; do not run it |
On its home 50 A circuit, memory is a non-issue. The question earns its keep everywhere else: a relative’s smaller circuit, a workshop outlet, anywhere the unit visits. Our guide to what size breaker an EV charger needs sets out the sizing, and why a charger keeps tripping the breaker covers the symptom of a step set above its circuit.
The Habit That Makes the Answer Irrelevant
Whatever your unit turns out to do, one habit removes the risk: set the step every time, as part of plugging in — plug in, read the screen, set the step for this circuit, then connect the car. On the EV-ACS3210T the screen makes that a two-second confirmation, since the step in use is displayed before the session starts. Drivers on one fixed circuit will find the habit nearly free; drivers who move the unit between circuits are the ones it protects.
Frequently Asked Questions
Does unplugging the charger erase its setting?
That is exactly what the listing leaves unstated. The 30-second check above answers it for your specific unit — the only answer worth acting on.
What if mine wakes up at 32 A?
On a 40 A or 50 A circuit, nothing is wrong — 32 A is within, or exactly at, the allowed ceiling. On a 30 A or 20 A circuit, set it down to 24 A or 16 A respectively before connecting the car, every time.
Is waking at the top step a fault?
No. Returning to a default is a design behaviour, not a defect. It becomes a problem only when the default step exceeds the circuit in front of it — which the set-every-time habit prevents.
Related Reading
- What Size Breaker Do I Need for an EV Charger?
- How Many Amps Does an EV Charger Need?
- Why Does My EV Charger Keep Tripping the Breaker?
- Do Portable EV Chargers Work? How Speed Depends on the Outlet
