PowerCad-PNL 2.5 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The most popular version among the program users is 2.5. The software is included in Photo & Graphics Tools. This free software was originally produced by PowerCad Software.
From the developer:
PowerCad-PNL provides a live 2D interface to view your project's electrical system layout in Autodesk Revit MEP. Unconnected panelboards are displayed and boards can be renamed. The program also helps you find panelboards within your model with a function that locates a view where the panelboard is visible and selects it. The cable length between boards and the load on each board is displayed in the 2D interface.
You may want to check out more software, such as ThumbsPlus Digicam Raw Plug-in, graphite or OpenSceneGraph, which might be similar to PowerCad-PNL.