A split-phase EV charger is simply a Level 2 charger that runs on standard North American 240-volt split-phase power, the normal residential electrical setup, where the home’s service provides 240 volts across two 120-volt legs. The term describes the type of power the charger uses, which for home charging in North America is the usual arrangement. Understanding what split-phase means helps clarify a technical term that mostly just describes standard home Level 2 charging.
Here is what a split-phase EV charger is.
Split-phase is the standard home supply
In North America, a typical home’s electrical service is split-phase (also called single-phase three-wire): it provides 240 volts across two 120-volt legs, with 120 volts available from either leg to neutral and 240 volts across the two legs. This is the standard residential power arrangement. A split-phase EV charger is one that runs on this standard 240-volt split-phase supply, which is exactly what a normal Level 2 home charger does.
So it is a standard Level 2 home charger
Because split-phase 240-volt power is the normal home supply, a split-phase EV charger is essentially a standard Level 2 home charger. Level 2 charging uses 240 volts, which in a North American home comes from the split-phase service. So describing a charger as split-phase is mostly just specifying that it uses the standard home 240-volt arrangement, as nearly all home Level 2 chargers do. The term is more technical than practical for most homeowners.
Split-phase vs three-phase
The term split-phase is often used to distinguish from three-phase power:
- Split-phase (single-phase): the standard residential supply, 240 volts across two legs, used by home chargers
- Three-phase: a different supply common in commercial and industrial settings, with three phases
Most homes have split-phase power, while three-phase is found in commercial buildings. So a split-phase EV charger is for standard residential power, as opposed to three-phase chargers used in some commercial settings. For home charging, split-phase is simply what you have.
Why the term comes up
The term split-phase may come up when a charger’s specifications describe the power it requires, or in discussions distinguishing residential from commercial charging. For a homeowner, the practical point is that standard home Level 2 chargers run on your split-phase 240-volt service, so you generally do not need to worry about the term, it describes the normal setup. An electrician ensures the charger matches your home’s power, which for a home is split-phase.
It matches standard home charging
Because split-phase is the standard home supply, a split-phase charger matches what your home provides, and installing a Level 2 charger in a typical home means connecting it to your split-phase 240-volt service. A licensed electrician installs the charger on the appropriate 240-volt circuit from your panel, which is the split-phase supply. So for standard home charging, a split-phase charger is simply the normal, correct type.
A split-phase EV charger is a Level 2 charger that runs on standard North American 240-volt split-phase power, the normal residential electrical setup with 240 volts across two 120-volt legs. The term mostly just describes standard home Level 2 charging, as opposed to three-phase power used in some commercial settings. For home charging, split-phase is what you have, and a licensed electrician installs the charger on your standard 240-volt service.
Stella Electric installs standard Level 2 home EV charging for homeowners across the Baltimore area and throughout Maryland, with flat-rate pricing and no overtime charges. If you want home charging installed correctly, we can help. Financing is available on qualifying projects.
