EV Design — EV Charging Infrastructure & Site Design
Technical Insights

Engineering knowledge, in depth

Technical articles on EV charging infrastructure design — written by our engineering team to explain the standards, methods and design considerations that underpin safe, compliant installations.

Electrical DesignFeatured

IEC 60287 Cable Thermal Analysis for EV Charging Infrastructure

High-power DC charging installations place thermal demands on cable systems that standard BS 7671 tables were not designed to address. IEC 60287 first-principles thermal modelling ensures cables are sized for the actual conditions they operate in — not the assumed average.

Jonathan Baron BEng(Hons) MCIBSE MIET··5 min read
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IEC 60287 cable thermal analysis diagram
Standards & Compliance

RCD Selection, DC Blinding and TT Earthing in EV Charging Installations

DC charging equipment can inject fault current components that render conventional RCDs unable to operate — a phenomenon known as DC blinding. Understanding RCD types and their limitations is essential to any EV charging installation designed for safety and compliance.

·5 min readRead
Standards & Compliance

Simultaneous Contact Risk and PME Earthing in On-Street EV Charging

The PME earthing arrangement that serves the majority of UK premises creates a specific and serious hazard for on-street and domestic EV charging. Understanding the risk — and the mitigation strategies that address it — is fundamental to safe EV charging design.

·5 min readRead
Standards & Compliance

Emergency Switching Requirements for EV Charging Installations

BS 7671, the IET Code of Practice and fire authority guidance collectively set out requirements for emergency switching on EV charging installations. The requirements are more specific — and more widely misunderstood — than many designers appreciate.

·4 min readRead
Design Practice

DC Cable Design in High-Power EV Charging Hubs: Scope and Thermal Considerations

In distributed high-power charging architectures, the DC cables between central power units and satellite dispensers present design challenges that are frequently unresolved at project outset. Clarifying scope and thermal constraints early avoids costly problems on site.

·5 min readRead

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