How Does the Smart Splitter Work?Updated 2 months ago

The Smart Splitter provides two 240V outlet outputs from a single 240V input. With the Smart Splitter’s auto-switching technology, power is fed to only one outlet at a time. With the Smart Splitter, multiple devices such as electric dryers, EV chargers, or electric water heaters can be operated from a single outlet, saving you thousands of dollars from negated electrical upgrades. 

The Smart Splitter functions by reading the total current draw coming from both receptacles and shutting off the Secondary side when the power draw exceeds the limit of the circuit breaker. After the Primary side finishes the session and the device recognizes that the total current draw is below the breaker threshold, it will then resume power to the Secondary. 

The Primary outlet always maintains an idle current which enables the device on the Primary to maintain enough power to run any LED display screens or Smart devices to stay connected to WiFi.

The Smart Splitter is UL safety certified, which means it is thoroughly inspected and tested by the leader in tech safety. Your safety and the quality of our products will always be our top priorities.

Note: The Smart Splitter is a fully automatic device and requires no manual input.

Use Case #1: Appliance and EV Charger. For example, let's say you want to share your dryer outlet to charge your EV. Your dryer would be plugged into the primary side and an EV charger on the secondary. Whenever you need to use your appliance, the Smart Splitter will automatically pause EV charging, run the load of laundry, and will resume when the appliance load is finished. In this case, most home setups would use either the NEMA 10-30 or NEMA 14-30 Smart Splitter which can pull up to 24 amps/5.7 Kw.

Use Case #2: Two EV Chargers. The same occurs when charging two EVs. The EV plugged in on the primary side will charge until it's fully charged, at which point the splitter automatically switches to fully charge your second EV. 

Switching Limits - Appliance x EV

With a 30A appliance and EV circuit, the Secondary (EV) side of the Smart Splitter will get shut off once the Primary (appliance) begins to pull enough power to cross the switching threshold of 10A. 

When an EV is already charging and the appliance turns on, it may take up to a minute for the appliance to pull enough power for the total current to exceed 30A and then shut off the secondary. In this case, the switch is typically not instantaneous but will take a moment before shutting off the Secondary.

*Some heat pump dryers are very efficient when run on "air-dry" or "fluff" modes and will only pull 2 - 3 amps. This is not enough to exceed the switching threshold and will be okay to run both the appliance and EV simultaneously.

Switching Limits - Dual EV

With a 50A circuit for dual EV charging, the Smart Splitter offers two charging modes: sequential and simultaneous. In sequential mode, the Secondary (SEC) side of the Smart Splitter will shut off when the total power draw exceeds 44A (the switching limit). The Primary EV will charge at full power (up to 40A), and once it completes charging or stops drawing power, the Secondary EV will automatically begin charging.

For simultaneous charging, both EVs must be set to 20A or less to stay under the switching limit. When properly configured, the Smart Splitter will allow both EVs to charge at the same time, effectively splitting the available power. When the Smart Splitter detects that the combined draw is within safe limits, it will maintain power to both outlets. Changes in charging state may take up to 60 seconds as the Smart Splitter monitors total power draw.

*Note: For 30A circuits, simultaneous charging is not recommended due to the 24A maximum safe charging rate. These circuits should use sequential charging only. Always verify your EVs or EV chargers can adjust to these amperage levels before attempting simultaneous charging.