Hire a freelance control panel designer
Post the job and read proposals from engineers who draw panels for a living — layout, schematics and a bill of materials someone can order from. Ingenium is the marketplace and holds the contract; the engineer you hire does the design.
Post a panel design jobWhat control panel design involves
A control panel is the enclosure that holds the electrical and control hardware for a machine or a process. Designing one means deciding what goes in it, where each part sits, how it is all wired, and what the builder has to buy.
The job splits into three deliverables that stand or fall together. The enclosure layout is a scale drawing of the backplate and the door: where the main disconnect, breakers, contactors, drives, power supplies, controller, I/O cards, relays and terminal blocks physically go. It is governed by wire bend radius, heat, segregation of power from signal wiring, the arc of the door, and the wiring gutter space a builder needs to actually work. A layout drawn without thinking about the person building it produces a panel that takes twice as long to wire.
The schematics are the wiring: power distribution and short-circuit protection, control power, every field device with its wire numbers and terminal numbers, safety circuits drawn so an inspector can follow them, and an I/O schedule that matches the controller program tag for tag. Good drawings are the handover — they are what an electrician reads at two in the morning when a conveyor has stopped, and the difference between a half-hour fault find and a half-day one.
The bill of materials is where a design becomes money. Every part with a manufacturer part number, a quantity and a note on lead time, the enclosure with its rating, DIN rail, wire by gauge and colour, ferrules, labels and glands. It is also the place designs quietly fail: a part on allocation for twenty weeks will stop the build regardless of how good the drawings are, so a designer who checks availability and offers an alternate is doing a real part of the job.
Panels for the North American market are usually specified to UL 508A, the standard for industrial control panels. It drives component selection, spacings, wire sizing, the short-circuit current rating of the assembly and how the nameplate is marked. Worth being precise about what that means commercially: anyone competent can design to the standard, but a panel only carries a UL listing mark if it is assembled by a shop enrolled in UL’s certified panel-builder programme. If your panel has to arrive listed, ask who is building it and under whose file — the design and the build are two different purchases, and only one of them can produce the mark.
Elsewhere the governing documents are different ones: IEC 60204-1 for the electrical equipment of machines, IEC 61439 for assemblies, NFPA 79 for industrial machinery in the United States, and a CE or UKCA technical file where that applies. Name the market in the job post. It is the difference between two otherwise identical panels.
What a panel design job usually covers
Say which of these you want. “Design me a panel” and “give me a drawing set I can build from” are not the same purchase.
Load list and sizing
Motors, heaters, drives and instruments with their loads, then the feeder, breaker, contactor and overload selection, transformer or supply sizing, and a heat calculation that decides whether the enclosure needs a fan, a filter or a cooler.
Enclosure layout
A scale backplate and door layout with real component footprints, wiring gutters, segregation of power from signal, clearance for door-mounted parts, and the enclosure type and rating for the environment it will sit in.
Wiring schematics
Power distribution, control power, safety circuits, every field device with wire and terminal numbers, an I/O schedule that matches the controller program, and a drawing set numbered so it can be revised rather than redrawn.
Terminal blocks and field interface
The terminal strip layout and numbering, how field wiring arrives and is labelled, which terminals are fused, and whether the machine is wired direct or via plugs for shipping in sections.
Bill of materials
Manufacturer part numbers, quantities, lead times and alternates where a part is scarce — ordered as a document someone in purchasing can work from without asking questions.
Build support and as-builts
Answering the builder’s questions during assembly, a wiring check or point-to-point test, and a revised drawing set that reflects what was actually built rather than what was first drawn.
Standards, software and hardware
The standard and the drawing format are both worth naming in a job post — handing over a DWG when the client needs an EPLAN project is a real problem at handover.
Standards
- UL 508A
- UL 698A
- NFPA 79
- NEC / NFPA 70
- IEC 60204-1
- IEC 61439
- NEMA enclosure ratings
- IP ratings
Design software
- EPLAN Electric P8
- AutoCAD Electrical
- SolidWorks Electrical
- Zuken E3
- See Electrical
- Promis.e
Panel hardware
- Rittal, Hoffman and Saginaw enclosures
- DIN rail terminal blocks
- Phoenix Contact, Wago, Weidmüller
- Circuit breakers and fuses
- Contactors and overloads
- VFDs and soft starters
- Safety relays
- 24 V DC power supplies
Adjacent work
- PLC and I/O selection
- Arc-flash and SCCR calculations
- Thermal load calculation
- Field wiring and conduit schedules
Manufacturer names are the parts specified on a drawing. Experience with them is a fact about an engineer’s history, not a partnership with or endorsement by any manufacturer or standards body.
Hiring it, and doing it
The same page serves two readers. One is deciding who to trust with a running machine; the other is deciding whether the job is worth a proposal.
What to look for in a panel designer
The test of this work is whether a builder can assemble the panel from the drawings without phoning anyone, and whether an electrician can fault-find from them a year later.
- Panels designed for your market and standard — UL 508A and IEC 60204-1 drive different choices
- Drawings in the format you can actually maintain, with a revision scheme
- A bill of materials with real part numbers, quantities and lead-time notes
- An answer on short-circuit current rating and how the assembly rating was established
- Clarity on who builds it, and under whose UL file if the panel has to arrive listed
- Willingness to be available during the build, which is when the drawings get tested
If you draw panels
Clients read your profile before they message you, and Ingenium requires it to be complete before you can send a proposal or accept an offer.
- List the standards you design to and the markets you have shipped into
- Name your drawing software and version — EPLAN, AutoCAD Electrical and SolidWorks Electrical are not interchangeable to a client who has to maintain the file
- Say whether you deliver a bill of materials, and whether you check availability
- Note if you also do the PLC program or the field wiring design; a client with one need usually has the other
- Skills, resume, job history, education, hourly rate and work schedule are all required before you can apply
- A client has to open the conversation — an invite to a job, a message, or an offer
How you hire a control panel designer here
Ingenium is a marketplace, not an engineering firm. It does not do the work — it is where the job is described, proposals are compared, and the contract and the money are held once terms are agreed.
Post the job
Describe the scope, the equipment involved and the site, and post it under Electrical Engineering. Posting is free. You can also invite a specific engineer to the job, or message one from their profile.
Read the proposals
Engineers who do this work reply with their rate and how they would approach it. Messaging is open from the moment a client starts the conversation, so the scope can be argued out before anyone commits.
Send an offer
An offer sets the payment model and the terms. Fixed price is split into milestones; hourly is invoiced weekly from logged time. The model is chosen when the job is posted and cannot be swapped later. A saved card is needed before an offer can go out.
Run the contract
An accepted offer becomes a contract with a shared work diary, tasks, time entries, comments, invoices and expense claims. Funds are held by Stripe and released when the client accepts the work.
Which payment model fits
This is work that prices well fixed, because the deliverables are documents: milestones split naturally into a load list and layout, then the schematic set, then the bill of materials and as-builts. Hourly suits the parts with no defined end — build support, revisions driven by a part going out of stock, or reverse-engineering an existing panel that has no drawings at all. The model is chosen when the job is posted and cannot be changed afterwards, so if you want the design fixed and the build support hourly, post two jobs.
The full flow from posting a job to getting paid covers both models and where the money sits in between. Everything a contract carries — time tracking, milestones, messaging, invoices, payouts — is listed on the features page. Or create an account and post the job.
Usually part of the same project
These jobs tend to arrive together. One engineer sometimes covers two of them; sometimes it is two contracts.
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