Information
Definition
Single-phase charging uses a single-phase AC supply, commonly found in many UK domestic and small commercial installations. It is normally assessed alongside phase availability, circuit capacity, protective devices, cable sizing and DNO/site constraints.
Why it matters
It usually limits AC charger output to around 7 kW depending on supply and current rating, making it central to UK home charging comparisons. For UK users, it affects installation cost, available charging power, protective device selection and how easily a site can be expanded.
References
Standards and regulations
BS 7671
BS 7671 is the UK national standard for electrical installations, covering the design, erection, inspection, testing and verification of low-voltage electrical systems. Section 722 contains specific requirements for supplies to electric vehicles.