AutoCAD Electrical Panel Layout: Design a Control Panel from Scratch

AutoCAD Electrical Panel Layout: Design a Control Panel from Scratch (Updated July 2026)

The schematic tells you what the circuit does. The panel layout tells the fabricator where every physical device goes inside the enclosure. These are two different drawings with two different audiences — the schematic goes to the engineer; the panel layout goes to the panel builder. AutoCAD Electrical's Panel Layout module links directly to your schematic: every component you placed in the schematic can appear in the panel layout with its correct footprint (physical dimensions). You position components inside the panel enclosure drawing, route the cable ducts, and produce a dimensioned layout that the panel builder can work from without guessing. This guide covers the panel layout workflow from library setup to finished drawing.

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What the Panel Layout Module Does in AutoCAD Electrical

The Panel Layout module in AutoCAD Electrical is a companion to the Schematic module. Where schematic drawings show how circuits are connected (logical view), the panel layout drawing shows where each physical component is mounted inside the enclosure (physical view). The two are linked — AutoCAD Electrical knows which component tags exist in the schematic, and the panel layout module lets you place footprint representations of those components in the physical panel space. After completing the panel layout, you can generate a Panel Bill of Materials (which lists components and their physical locations) and produce the layout drawing that the panel fabricator uses to drill enclosure holes, mount DIN rails, and position components before wiring.

Panel Layout Library — Understanding Footprint Symbols

Panel footprint symbols are the physical-size representations of components — they show the component's actual outline dimensions as seen from the front of the panel door. AutoCAD Electrical comes with a standard footprint library covering common components from major manufacturers (Schneider, Siemens, Allen-Bradley, ABB). Each footprint symbol has attributes that link it to a schematic component tag. When you insert a footprint in the panel layout, you assign it the tag that corresponds to the schematic component — this creates the link between the logical design and the physical layout. The footprint library is organised by component type: contactors, circuit breakers, terminal blocks, pilot devices (pushbuttons, switches), VFDs, and more.

Using the Symbol Builder for Custom Panel Components

The Symbol Builder in AutoCAD Electrical lets you create custom panel footprint symbols for components not in the standard library. Access it from the Schematic tab (for schematic symbols) or the Panel tab (for footprint symbols). In the Panel Symbol Builder, you define the footprint outline (the physical dimensions of the component's mounting face), the mounting hole locations (for bolt-mount devices), and the attribute placement (where the tag number and description appear on the drawing). Once created, your custom symbol is saved to your company's library and can be reused on any future project. Most companies have custom symbols for their preferred contractors, PLC racks, and custom enclosure components that aren't in the standard Autodesk library.

Step-by-Step: Setting Up Your Panel Layout Drawing

To set up a panel layout drawing: create a new drawing within your AutoCAD Electrical project (right-click project in Project Manager > New Drawing) and select the Panel Layout drawing template. The drawing template includes the correct title block and panel-specific attribute definitions. Set the drawing scale to match your panel enclosure size — typically 1:10 for standard MCC panels or 1:5 for smaller control panels. Insert the enclosure outline as a drawing boundary block, sized to match your actual enclosure dimensions (e.g., 600×800 mm for a standard cabinet). Insert DIN rail symbols at the mounting positions within the enclosure. Now you're ready to place components.

Placing and Arranging Components in the Panel

To place components from the schematic into the panel layout: in the Panel Layout drawing, use the Panel tab > Insert Component Footprint. A dialog appears showing all schematic components that don't yet have panel placement — this is the list of components from your electrical audit that need to be located in the panel. Select a component from the list, select its footprint symbol, and click to place it in the drawing. Position it on the DIN rail or direct-mount location. Repeat for each component. As you place components, the 'unplaced components' list shrinks. When all components are placed, the list is empty — and your panel layout drawing accounts for every device in the schematic.

Cable Duct and DIN Rail Placement in Panel Layout

Cable ducts (also called wiring duct or cable trunking) are placed in the panel layout as rectangular symbols showing where the wiring harness will run inside the enclosure. AutoCAD Electrical has cable duct symbols in the panel library — place them horizontally between DIN rail rows and vertically on the sides of the enclosure. The cable duct drawing tells the panel builder how much trunking to buy and where it mounts. DIN rail symbols are placed horizontally across the enclosure, and component footprints snap to them. Spacing between DIN rails should account for the maximum component height plus a clearance margin — standard practice is 100–150 mm between rail centres for typical relay and contactor sizes.

Checking Panel Layout Against Schematic — The Bill of Materials Link

After completing the panel layout, use Project > Reports > Panel Bill of Materials to generate the panel BOM. This report lists every component placed in the panel layout, its tag, description, catalogue number, and panel location (row and column coordinates). You can compare this against the schematic BOM to verify that every schematic component has been placed in the panel layout — any discrepancy means either a component was forgotten in the layout or an extra component was added to the layout that doesn't exist in the schematic. Both discrepancies need resolution before fabrication.

FAQs

Do I need to create a panel layout for every AutoCAD Electrical project?

Not always. Small projects — a simple control box with 5–10 components — are often documented with a hand-annotated photo of the panel instead of a formal panel layout drawing. Panel layout drawings are standard practice for: panels with 20+ components, panels built by external fabricators who need exact placement drawings, customer contracts that explicitly require panel layout as a deliverable, and UL or CE certification applications where the panel layout is reviewed by the certifying inspector. For standard-sized industrial control panels (MCC panels, motor control centres, process control panels), a formal layout drawing is expected.

Can I automatically generate the panel layout from the schematic in AutoCAD Electrical?

AutoCAD Electrical does not automatically generate a panel layout from the schematic — component placement is a manual engineering decision that depends on the enclosure size, thermal management, cable routing logic, and accessibility for maintenance. What AutoCAD Electrical does do automatically is provide the list of schematic components that need to be placed in the panel (the 'unplaced components' list in the Insert Component Footprint dialog), and it links schematic tags to panel footprints so you don't have to re-enter the component data. The physical positioning is your engineering judgment.

What is the difference between a panel layout drawing and a panel wiring diagram?

A panel layout drawing shows where components are mounted inside the enclosure (the view from the front door looking in). It includes DIN rail positions, component footprints, cable duct routing, and overall enclosure dimensions. A panel wiring diagram (also called a point-to-point wiring diagram or cabinet wiring diagram) shows how the wires connect between those mounted components — which terminal on motor M1 connects to which terminal on contactor K1, with wire numbers and colours. Both drawings are required for a complete panel fabrication package. AutoCAD Electrical generates the schematic (from which a skilled draftsman can derive wiring diagrams) and the panel layout, but the point-to-point wiring diagram is typically generated from the Wire List report combined with a separate wiring diagram template.

Where can I find footprint symbols for Siemens and Schneider components in AutoCAD Electrical?

AutoCAD Electrical includes footprint symbols for major manufacturers including Siemens, Schneider Electric, Allen-Bradley, ABB, and Moeller. Access them through Panel > Insert Component Footprint > select 'Manufacturer' catalogue. If a specific part number doesn't appear, check whether your AutoCAD Electrical installation includes the manufacturer's footprint catalogue file (.cat or .wdc format). Siemens and Schneider both provide downloadable footprint libraries for AutoCAD Electrical on their partner portals. Download the appropriate catalogue file and add it to your AutoCAD Electrical catalogue path in the Options settings.