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How does the Smart Splitter work?Updated 8 months ago

How it Works

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. 


Sequential vs Simultaneous Charging

You can also charge two EVs at half speed (typically 20 Amps each) if your EV chargers or EVs themselves have the ability to set custom current limits. Set the charger to half amperage and charge both of your EVs simultaneously at half speed. In this case, most home setups would use either the NEMA 14-50 or NEMA 6-50 Smart Splitter which can pull up to 40 amps/9.6 Kw.


Simultaneous Charging
If you would like to charge both of your vehicles at the same time, you will need to lower the total charging amperage of both vehicles to 40A or less. Typically this means setting the charging amperage of both vehicles to 20A, though you can go lower one or both as low as 16A if you experience any breaker-tripping issues. The Smart Splitter will automatically sense that the total power draw can be met by the supplying circuit and will divide the power accordingly to both EVs.

Simultaneous charging will effectively lower the charging speed by 50% for each vehicle as they are only receiving half of the power.

Sequential Charging
If you would like to ensure that one of your vehicles receives priority and charges quickly, then you may prefer to charge your cars sequentially. Both vehicles can have their charging amperages set up to 40A, and when both are plugged in the Smart Splitter will recognize the total power draw exceeds the 40A limit and shut off the Secondary outlet. The Primary outlet will receive 100% of the power until that vehicle has finished charging and stops drawing power. Then, the Smart Splitter will automatically turn the Secondary outlet back on to charge the other vehicle.

How to set my charging current
Some EVs, like Teslas, have adjustable charging functionality built directly into the car. These vehicles can have their charge current adjusted through the car's dashboard or through the companion app.

Other EVs are designed to charge at 32A and don't have the ability to adjust the amperage themselves. If this is the case and you would like to be able to charge two cars simultaneously, you will need to purchase an EVSE with adjustable amperage.

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