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Services / Electrical Engineering
Electrical Engineering Mackay

Electrical Design & Drafting - Mackay & Central Queensland
Documentation that works on the desk and on the floor.

Beetle Engineering produces electrical design documentation for industrial projects - from single-line diagrams and schematic drawings through to cable schedules, I/O lists and as-built packages. We design for the people who build and maintain the systems, not just for the approval process.

Electrical Design & Drafting

What electrical design & drafting with Beetle actually looks like.

What good electrical documentation actually does

Most electrical problems on industrial sites aren’t caused by bad wiring - they’re caused by bad documentation. Electricians work from drawings. When drawings are wrong, incomplete or missing, faults take longer to find, modifications introduce errors, and new equipment gets wired from guesswork.

We treat documentation as a core deliverable, not an afterthought. Everything we produce is intended to be useful in the hands of the people who will use it - site electricians, instrument technicians, shutdown crews, and the maintenance team that inherits the system five years from now.

What we produce

Single-line diagrams (SLDs) - power distribution from the point of supply through to final circuits. Showing protection devices, ratings, fault levels, and equipment references. Used for design, approval, and ongoing site reference.

Schematic and wiring drawings - detailed control circuit schematics, motor control circuits, and instrument loop drawings. Drawn to Australian Standards conventions. Tagged and cross-referenced so any competent electrician can follow them.

Panel layout drawings - internal arrangement of MCCs, switchboards, and control panels. Showing component mounting positions, busbar arrangements, cable entry, and labelling. Produced ahead of fabrication so builders know exactly what they’re building.

Cable schedules - route, size, type, termination references, and service for every cable in the system. Formatted to suit your cable management system or presented as a standalone document.

I/O lists and termination schedules - cross-reference between field instruments, cable cores, and PLC/DCS termination points. Essential for commissioning and for ongoing maintenance.

As-built packages - full documentation sets reflecting the installed condition of a system. Either produced from our own construction drawings updated through commissioning, or built from scratch via site survey.

Typical projects

New switchroom or MCC installations where full design documentation is required before fabrication begins. Control system upgrades where existing drawings need to be updated to reflect new equipment before a shutdown cutover. As-built surveys of older facilities that have grown through decades of modifications without accompanying documentation updates.

We work at whatever scale suits your project - a single switchboard drawing package, or a full set of electrical documentation for a processing line from point of supply to field instruments.

Deliverable formats

Drawings are issued in PDF for review and approval, and in native DWG format for your records. We maintain a drawing register through the project and issue a final as-built package at project close. If your business uses a document management system, we’ll work within your numbering and revision conventions.

One process. Zero surprises.

Scoping
  • Site walk & asset review
  • Requirements capture
  • Network & OT audit (if required)
Quoting
  • Scope of work definition
  • Deliverables schedule
  • Fixed-price or T&M proposal
Optional
Upfront engineering
  • Concept design & review
  • Feasibility & risk assessment
  • Design basis document
Documentation
  • Functional descriptions
  • Electrical drawings & diagrams
  • Network & architecture diagrams
  • IO lists
  • ITC / test sheets
  • Asset & network audits
Programming
  • PLC programs (Studio 5000 / RSLogix)
  • SCADA & HMI development
  • FactoryTalk / CitechSCADA / Aveva
  • OT network configuration
FAT → SAT & commissioning
  • Factory acceptance testing (FAT)
  • Site acceptance testing (SAT)
  • Loop checks & punch-list close-out
  • Hand-back & as-built documentation
All industries →

Common questions, straight answers.

We work in AutoCAD Electrical for schematic and panel layout drawings, and produce SLDs and general arrangement drawings to suit your project requirements. We can work from existing drawing sets in most common formats and deliver outputs in DWG, PDF, or both.
Yes. We regularly produce as-built documentation for systems where drawings either don't exist or no longer reflect what's installed. This typically involves a site survey to verify existing wiring, followed by drafted documentation that reflects actual installation. It's work we see regularly in older sugar mills and processing plants that have been modified over decades without documentation updates.
Yes. We're familiar with the drawing standards required by Queensland network service providers and by most major mining and resources principal contractors operating in the Bowen Basin and Central Queensland. If you have a specific drawing standard we need to comply with, provide it at project kickoff and we'll design to it.
Yes. Panel layout drawings - including MCC compartment layouts, switchboard internal arrangement, and enclosure general arrangements - are a standard part of our design packages for new or upgraded electrical systems.

Pairs well with

Ready to discuss your electrical design & drafting project?

Talk to an RPEQ engineer about your project. We work across mining, sugar, manufacturing and utilities throughout Queensland.