Information
Definition
Configurable current allows the maximum charging current to be set or limited during installation or configuration. It is normally assessed against site capacity, maximum demand, charger grouping and the behaviour expected when electrical demand changes.
Why it matters
It helps match a charger to site capacity, circuit protection, DNO limits and load management requirements. For UK users, it affects whether EV charging can be added without unnecessary supply upgrades or nuisance limitation of other site loads.
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.
ENA EREC G100
ENA EREC G100 is the UK Engineering Recommendation for customer export and import limitation schemes used to control power flow at a grid connection point. In EV charging it is relevant to load management, constrained connections, V2G export control and maximum import limitation.