Free Utility

System DesignEngine.

Answer a few questions about your van and we'll calculate the precise components required—generating a custom wiring diagram and fully compliant shopping list.

[ ~5 MIN ][ CUSTOM SCHEMATIC ][ 1:1 PARTS LIST ]

What's in your van?

Select the appliances you plan to use. Adjust quantities and daily hours to match your typical usage.

Estimated daily consumption0 Wh

0 appliances selected

0 Wh/day

Built by van conversion enthusiasts. Calculations based on UK electrical standards and real-world testing. Always have your installation checked by a qualified electrician.