Electrical Single Line Diagrams
Clear and comprehensive SLD documentation covering switchboards, distribution boards, and protection systems — produced for design, approval, and as-built purposes.
Protoline delivers industry-standard electrical design documentation for Perth's infrastructure, mining, and industrial projects — from first-off Logic Diagrams to full electrical drawing packages.
Protoline is a Perth-based electrical drafting and design company built around one goal: delivering documentation you can build from. We understand the standards, the process, and the pressure your projects are under.
We deliver accurate, standards-compliant electrical drafting documentation across a broad range of commercial applications — from design through to construction issue.
Clear and comprehensive SLD documentation covering switchboards, distribution boards, and protection systems — produced for design, approval, and as-built purposes.
Detailed wiring documentation for power and control systems, formatted to support installation, testing, and ongoing maintenance to AS/IEC standards.
Precise control circuit documentation capturing interlocking logic, instrumentation, and automation sequences — built for commissioning and long-term asset management.
Site and floor plan documentation showing equipment locations, cable routes, and containment — coordinated with architectural and structural drawings for construction.
Physical layout and schematic documentation for switchboards, MCCs, and control panels — detailing component placement, wiring, and terminal arrangements for fabrication.
Engineered lifting design documentation including lift studies, rigging arrangements, and load calculations — produced to support safe and compliant lifting operations on site.
We're local to Perth and available for direct collaboration — reducing the miscommunication and delays that come with offshore drafting services.
Every deliverable is produced in accordance with relevant AS and IEC standards, ensuring your documentation holds up through engineering reviews, audits, and handover.
From simple diagrams to full packages via our partner network, Protoline manages coordination so your team doesn't have to juggle multiple contractors.
We draft with maintenance, modifications, and future owners in mind — not just construction issue.
No ambiguity, no surprises. Every Protoline engagement follows a structured workflow that keeps your project on schedule.
We review your project scope, existing documentation, and deliverable schedule to understand exactly what's required.
A clear written scope and fee proposal, itemised by deliverable — so you know what you're getting and what it costs.
We produce your documentation and issue drafts for your review and markup — iterating until the output is accurate and complete.
Completed documents issued in your required format — PDF, DWG, or native CAD — ready for construction or record.
Protoline's electrical drafting services support the projects and sectors that drive Western Australia's economy.
Have a question not answered here? Get in touch and we'll respond within one business day.
Contact Us →Our electrical drafting services are widely used by:
Yes. Our drawings are compliant with local and international standards including:
Yes. We can digitise your hand-drawn sketches, PDF markups, or scanned images into precise and professional CAD drawings, formatted to your layering and annotation standards.
Tell us about your scope and we'll come back to you with a clear proposal. No obligation, no pressure.