EV Charging

EV Charging Infrastructure Design

Complete AC and DC EV charging design for cars and light vehicles — from initial feasibility through to construction-ready tender packages, across every sector.

AC & DC car charging

The right charging technology, correctly designed

Selecting between AC and DC charging — and designing the electrical infrastructure to support it correctly — is the foundation of any successful EV charging project. The choice depends on how long vehicles dwell, the power available from the grid connection, future-proofing requirements, and the capital and operating cost envelope the client is working within.

AC charging (typically 7 kW to 22 kW) suits destinations where vehicles park for an hour or more: workplaces, residential developments, retail parks, and overnight fleet depots. DC rapid and ultra-rapid charging (50 kW to 350 kW) suits locations requiring meaningful charge in twenty minutes or less: motorway services, roadside hubs, and fleet operations with high vehicle turnover.

EV Design provides comprehensive electrical design for both technologies — covering the complete scope from feasibility and site layout through to protection studies, cable thermal calculations, DNO coordination, and construction-ready drawings.

Design scope

AC charging design and DC rapid charging design

AC Charging

Up to 22 kW per point

AC charging design for workplace, residential, retail and public-sector installations. Covers single-phase (3.6–7.4 kW) and three-phase (11–22 kW) systems, including load management strategies for multi-point installations.

Feasibility report and site assessment
EV charging site layout drawings
Charger selection and specification
AC cable sizing and routing calculations
Ducting and containment design
Earthing and O-PEN protection scheme
Electrical load and capacity assessment
DNO application support documentation
Tender drawings and specification
Construction-stage design support

DC Rapid & Ultra-Rapid

50 kW to 350 kW per unit

DC rapid and ultra-rapid charging design for public charging hubs, fleet depots, motorway services and retail destinations. The higher power levels demand rigorous cable thermal modelling, protection coordination, and careful DNO engagement.