Pre-Wired Board Layout Builder: Design a Caravan Power Board Online

Pre-Wired Power System Board Builder planning tool from Solar 4 RVs

Plan a caravan or off-grid power board online, check component placement and move from a reviewed layout to matching pre-wired installation parts.

A caravan power board has to fit the available space, keep service access practical and bring many electrical components together in a layout that can actually be built. Our free Pre-Wired Power System Board Builder helps you work through that physical design before you buy parts or start drilling.

The page title in the tool is “Pre-Wired Power System Board Builder”; this guide also calls it the Pre-Wired Board Layout Builder. Both names refer to the same online planner.

Open the free Pre-Wired Board Layout Builder →

Pre-Wired Power System Board Builder interface with its planning controls and live workspace — Pre-Wired Power System Board Builder shown in the live Solar 4 RVs app.

What the board builder helps you plan

Start with the board dimensions and construction options, then add the equipment your system needs. The live canvas shows how the selected components sit together, while the editing controls let you move, rotate and refine the arrangement.

Set the board size before arranging equipment.
Place and reposition compatible power-system components on the canvas.
Inspect selected items and refine their position or orientation.
Save or reload a project when you need to continue later.
Review the design and estimate before discussing a build.

Pre-Wired Power System Board Builder guided tour highlighting a planning step — The built-in guided tour highlights the next part of the Pre-Wired Power System Board Builder workflow.

Use the guided tour before your first layout

Select the question-mark tour button in the tool header. The tour introduces the tool switcher, starting design controls, component controls, canvas, project actions and review stage. It is the quickest way to understand the workflow without hunting through every control.

When an item is selected, the tour can also point out the controls that only appear for that item. That makes the walkthrough useful even if you have already opened the builder once.

A practical board-planning workflow

Measure the real installation area, including door openings, cable-entry paths and space needed to service fuses or disconnectors. Enter the usable dimensions rather than the absolute wall dimensions. Then place the largest or least-flexible components first and use the remaining area for smaller protection and distribution equipment.

Treat the layout as a design and quotation aid, not an electrical approval. Cable protection, ventilation, clearances, conductor sizing and installation methods still need to suit the equipment manufacturer’s instructions and applicable standards. A qualified installer should review the final system where required.