Which inputs control the panel layout?
Use the panel schedule, approved schematics, device data, terminal plan, enclosure outline and project title block. Record which input is preliminary.
| Input | Use | Review |
|---|---|---|
| Panel outline | Plan and elevation | Vendor revision |
| Device schedule | Tag and position | Approved list |
| Schematic | Circuit cross-reference | Logic review |
| Terminals | External interfaces | Terminal plan |
| Title block | Identity and issue | Project standard |
How should a device mismatch be recorded?
Keep the schematic tag, device schedule and layout reference visible. Raise a question when the sources disagree instead of choosing the convenient position.
- Device tag
- Circuit reference
- Terminal number
- Panel location
- Open engineering item
What is the drafting check?
The drafter checks transcription, references, dimensions and issue status. The engineer checks the protection and control design.
Common questions
What else should the bid team know?
What should a protection panel layout include?
It should show panel outline, device tags, terminals, circuit references, interfaces, source revisions and status.
Who reviews a protection panel layout?
The drafter coordinates the drawing, while the responsible engineer approves device selection and logic.
Does drafting approve the engineering design?
No. The responsible registered engineer makes design decisions and performs engineering sign-off.
Primary sources
- IEEE C2-2023 National Electrical Safety CodeIEEE Standards Association
- IEC 61936-1:2021International Electrotechnical Commission
- IEC 60617 Graphical Symbols for DiagramsInternational Electrotechnical Commission
- 29 CFR 1910.269Occupational Safety and Health Administration