In Autodesk Revit’s Electrical discipline, when electrical components such as panelboards are hosted incorrectly (for example, Panel B hosted to Panel A instead of a wall or level), the hosting relationship must be corrected by reassigning the work plane or host. This is essential because hosted electrical elements depend on the geometry or level of their host for placement, alignment, and coordination.

According to the Revit MEP User’s Guide (Chapter 45 “Work Planes and Element Hosting”):

“If a hosted element is placed incorrectly or the host has changed, use the Edit Work Plane or Pick New commands to redefine its host or work plane.”

Here’s how these two tools apply:

1️⃣ Pick New (Option A)

Located under the Work Plane panel on the Modify tab, this command allows you to select a new face or host (e.g., a wall, ceiling, or floor) for the existing component. It effectively reassigns the element’s host without deleting or recreating the element.

“Use Pick New to specify a different face or surface as the host for a component that was incorrectly placed.”

2️⃣ Edit Work Plane (Option E)

This command lets the designer redefine the reference level or named work plane to which an element is associated. For hosted electrical equipment (like lighting or panels), this ensures the object references the correct structural or architectural surface.

“To correct hosting errors, open Edit Work Plane from the Modify tab, and assign a new named plane, level, or face.”

Incorrect Options Explanation:

B. Edit Mounting value – changes only how the panel is mounted (e.g., recessed or surface), not the host itself.

C. Move command – repositions the element but does not change the hosting relationship.

D. Edit Host value – the “Host” parameter is read-only; it cannot be edited directly.

Thus, the correct methods to rehost Panel B from Panel A to the correct wall or work plane are through Pick New and Edit Work Plane, ensuring proper association and maintaining system connectivity.