Information
Definition
Load balancing distributes available electrical capacity between chargers, circuits or site loads to avoid exceeding supply limits. It is normally assessed against site capacity, maximum demand, charger grouping and the behaviour expected when electrical demand changes.
Why it matters
It is essential for multi-charger sites, constrained supplies and installations where EV charging must share capacity with other building loads. 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
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.
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.