Splitters
The best dryer outlet splitters for EV charging
If you already have a 240-volt dryer outlet and your panel has no room for a new circuit, a splitter can put Level 2 charging on the outlet you already own.
By Sawyer V. · Published September 10, 2026
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The expensive part of home charging is usually the new circuit, and on a full panel it can mean a service upgrade. A splitter sidesteps that entirely by reusing a 240-volt outlet you already have -- most often the one behind the dryer.
Splitter picks
Ranked for a first home charger. Every row jumps to the full write-up below.
| # | Product | Best for | Max output | Price |
|---|---|---|---|---|
| 1 | NeoCharge Smart SplitterThe broadest outlet range. NEMA 14-50. | The broadest outlet range | 40 A9.6 kW | Check price on Amazon#ad how we are funded |
| 2 | Splitvolt Splitter Switch (NEMA 10-30)Older 10-30 dryer outlets. NEMA 10-30. | Older 10-30 dryer outlets | 24 A5.8 kW | Check price on Amazon#ad how we are funded |
How a splitter works
It plugs into your existing outlet and gives you two: one for the dryer, one for the charger. The switching is automatic -- NeoCharge, for example, prioritizes the dryer and switches to EV charging when the dryer finishes. An internal breaker keeps the draw inside what the circuit is rated for. Both units here are also sold as able to share an outlet between two EVs.
The 24-amp limit, and what it means
A standard 30 A dryer circuit
The code limits a continuous load to 80% of its circuit: 30 x 0.8 = 24 A
24 A x 240 V = 5.8 kW
At 3.5 mi/kWh, about 20 miles of range per hour
Over a ten-hour night, about 200 miles -- more than most people drive in a day
On a 50 A circuit, such as a range or RV outlet, the same rule allows 40 A -- full plug-in Level 2 speed. The splitter does not create capacity; it just lets two appliances take turns on the circuit you have.
| Your outlet | Circuit | Max continuous charging | Splitter here |
|---|---|---|---|
| NEMA 10-30 (older 3-prong dryer) | 30 A | 24 A | Splitvolt 10-30, NeoCharge 10-30 |
| NEMA 14-30 (modern 4-prong dryer) | 30 A | 24 A | NeoCharge 14-30 |
| NEMA 14-50 (range or RV) | 50 A | 40 A | NeoCharge 14-50 |
When a splitter is the right answer
- Your panel has no room for a new circuit, and a service upgrade is the alternative -- panel upgrades.
- The dryer outlet is near where you park, which is common in garages.
- Your daily driving fits inside 24 A overnight, even allowing for wash days.
When it is not
- Your panel can take a dedicated circuit. One less device, and you charge while the dryer runs.
- You need more than 24 A for a large battery on a 30 A circuit.
- The dryer outlet is far from the car. Do not bridge the gap with an extension cord -- why.
The splitters in detail
Two certified splitters, each with the case against it.
1. The broadest outlet range
NeoCharge Smart Splitter
NeoCharge · NEMA 14-50 · 40 A / 9.6 kW
Plugs into an existing 240-volt outlet and switches power between your dryer and your EV automatically, so you get Level 2 charging without a new circuit. UL listed, and sold in a version for each common dryer and range outlet.
What is good
- Avoids a new circuit, which can mean avoiding a panel upgrade
- Switches between the two loads automatically
- UL listed, with an internal breaker that enforces the circuit limit
- A version for every common dryer and range outlet type
What is not
- The dryer and the charger take turns on the circuit
- On a 30 A dryer circuit you are limited to 24 A of charging
- You must buy the version that matches your outlet exactly
| Output (14-50 version) | 40 A / 9.6 kW |
|---|---|
| Input (14-50 version) | NEMA 14-50P, 240 VAC single phase |
| Outputs (14-50 version) | 2 x NEMA 14-50R |
| Also sold for | NEMA 10-30 and 14-30 (24 A), NEMA 10-50 and 6-50 (40 A) |
| Protection | Internal software breaker |
| Weight | 2.5 lb |
| Certification | UL listed |
Skip this if: Skip it if your panel can take a new circuit. A dedicated EV circuit is simpler, charges while the dryer runs, and has one less device in the chain.
Specifications above are the manufacturer’s published figures. Source: NeoCharge. We have not tested this unit — see how we pick.
2. Older 10-30 dryer outlets
Splitvolt Splitter Switch (NEMA 10-30)
Splitvolt · NEMA 10-30 · 24 A / 5.8 kW
Shares an older three-prong 30-amp dryer outlet between the dryer and the charger, with an internal breaker holding charging to 24 A. This model's EV socket is also a NEMA 10-30; Splitvolt sells a separate version with a 14-50 EV outlet. cETLus listed with a published file number.
What is good
- cETLus listed, with the Intertek file number published
- Internal breaker keeps charging inside the 24 A limit of a 30 A circuit
- Plugs in -- the splitter itself needs no electrician installation
What is not
- Your charger must be able to limit itself to 24 A
- The EV socket is a NEMA 10-30; a 14-50 outlet means a different model
- 24 A is about 20 miles of range per hour -- slow for a big battery
| Rating | 24 A, 240 V |
|---|---|
| Plug | NEMA 10-30 |
| Sockets | NEMA 10-30 for the dryer, NEMA 10-30 for the EV |
| Certification | cETLus, Intertek 5021938, UL 60730-1 / CSA E60730-1 |
| Protection | Internal safety breaker |
| SKU | SPS-C1-011-30A |
| 14-50 EV outlet | A separate Splitvolt model |
Skip this if: Skip it if your dryer outlet is a four-prong 14-30 or a 14-50 -- buy the splitter version made for that outlet instead.
Specifications above are the manufacturer’s published figures. Source: Splitvolt. We have not tested this unit — see how we pick.
FAQ
Questions people actually ask
Can I charge my EV from my dryer outlet?
Is a dryer outlet splitter safe for EV charging?
Can the dryer and the EV charge at the same time on a splitter?
Which splitter do I need?
Sources
Where these numbers come from
- NeoCharge Smart Splitter — NeoChargeOutlet versions, output ratings, weight, protection and UL listing. Fetched 2026-09-10.
- Splitvolt Splitter Switch (NEMA 10-30, 240 V, 24 A), cETLus certified — SplitvoltRating, plug and sockets, certification and file number, internal breaker; the separate 10-30/14-50 model. Fetched 2026-09-10.
- Splitvolt FAQ — SplitvoltMaximum safe charging rates on 30 A and 50 A dryer circuits under the NEC.
- NEC Article 625: EV charging equipment — WireRefContinuous-load rule behind every circuit figure on this page.
Read next
Related reading
- The best EV chargers for a 100-amp panelChargers that fit a 100-amp service, and the three ways to avoid an upgrade.
- Outlet types for EV charging: a field guideEvery outlet you might charge from, what each delivers, and which adapters to carry.
- Do you need a panel upgrade for an EV charger?When a panel upgrade is genuinely needed, what it costs, and the cheaper alternatives.
- The best plug-in EV chargersPlug-in chargers for a NEMA 14-50: portable, swappable, and capped at 40 amps.
- The best EV chargers for a 30-amp circuitWhat a 30-amp circuit gives you, and two adjustable chargers that can be set to 24 A.