Electrical Drafting Services Australia

ASTCAD provides electrical drafting services to electrical engineers, facilities managers, industrial plants, and building designers across Australia. Our electrical drafters produce the full range of CAD documentation required for design, installation, and compliance — from high-voltage single-line diagrams through to detailed panel wiring drawings — using AutoCAD Electrical, Eplan, and MicroStation.

All ASTCAD electrical drawings comply with Australian Standards and are formatted for council submissions, authority approvals, and as-built handover packages. We work with clients in Brisbane, Sydney, Melbourne, Perth, Adelaide, and across regional Australia, delivering drawings remotely via secure file transfer.

Electrical Drafting Services We Offer

Single-Line Diagrams (SLDs)

Single-line diagrams are the primary document for electrical distribution systems, from mains intake through to final circuit distribution. ASTCAD produces SLDs for residential, commercial, and industrial installations to AS/NZS 3000:2018 (Wiring Rules), including:

• Main switchboard (MSB) and distribution board (DB) single-line diagrams
• High-voltage (HV) distribution SLDs to AS 2067 (Substations and High Voltage Installations)
• Generator, UPS, and ATS transfer switch SLDs
• Motor control centre (MCC) SLDs to AS 61439 (Low-Voltage Switchgear and Controlgear Assemblies)
• Solar PV and battery storage system SLDs for AS/NZS 4777 compliance

Schematic and Wiring Diagrams

Schematic drawings and wiring diagrams translate the electrical design into the detailed circuit-level documentation that electricians and panel builders work from. Our electrical drafters produce:

• Control circuit schematics (relay logic, PLC I/O, motor control, VSD circuits)
• Panel wiring diagrams — terminal block assignments, cable schedules, component locations
• Cable and harness drawings for industrial machinery and switchboard assemblies
• Ladder logic diagrams for relay-based control systems
• ATEX / IECEx hazardous area electrical drawings to AS/NZS 60079 (Explosive Atmospheres)

P&ID (Process and Instrumentation Diagrams)

P&IDs are the primary reference document for process plant — showing all process equipment, piping, instrumentation, and control interfaces. ASTCAD produces P&IDs to AS 1101.6 (Graphical Symbols for General Engineering — Fluid Power) and ISO 10628 for oil and gas, water treatment, food processing, and mining process plant. Our P&ID services include new drafting from engineer’s sketches, revision and redline incorporation, and as-built updates.

Electrical Layout Plans

Electrical layout drawings show the physical placement of switchboards, conduits, cable trays, light fittings, GPOs, data points, and equipment on architectural floor plans. ASTCAD produces:

• Power and lighting plans for commercial and industrial buildings
• Data and communications layout drawings (structured cabling, CCTV, access control)
• Cable tray and conduit routing drawings, coordinated with structural and mechanical
• Emergency lighting and exit lighting layout plans to AS 2293 series
• Earthing and bonding drawings to AS/NZS 3000 and AS 4756

As-Built Electrical Drawings

ASTCAD converts site redline mark-ups, RFI logs, and field photographs into final as-built electrical drawings for owner handover and authority submission. We work to AS 1100.101 drawing standard and deliver in both PDF and AutoCAD DWG for ongoing maintenance use.

Australian Standards for Electrical Drafting

Standard	Application
AS/NZS 3000:2018	Wiring Rules — governs all low-voltage electrical installations in Australia
AS 2067	Substations and High Voltage Installations above 1 kV A.C.
AS 61439 series	Low-voltage switchgear and controlgear assemblies — switchboard design standards
AS/NZS 4777	Grid connection of energy systems via inverters — solar PV and battery storage
AS/NZS 60079	Explosive atmospheres — hazardous area electrical equipment and wiring
AS 2293	Emergency escape lighting and exit signs for buildings
AS 1101.6 / ISO 10628	P&ID graphical symbols for process plant
AS/NZS 1100	Technical drawing — general drawing standards, line types, title blocks

Industries We Serve

• Mining and resources — HV distribution SLDs, MCC drawings, hazardous area (Zone 1/2) documentation to AS/NZS 60079, P&IDs for process plant in WA, QLD, and NT
• Oil and gas — P&IDs, instrument loop diagrams (ILDs), cause-and-effect matrices, hazardous area layout drawings
• Commercial construction — Power and lighting plans, switchboard SLDs, data and communications drawings for NCC compliance
• Industrial and manufacturing — MCC schematics, VSD wiring drawings, panel wiring diagrams, PLC I/O schedules
• Data centres — HV/LV SLDs, UPS/generator SLDs, PDU wiring diagrams, structured cabling documentation
• Water and wastewater — SCADA integration P&IDs, pump station electrical drawings, instrument loop diagrams

Frequently Asked Questions

What software does ASTCAD use for electrical drafting?

We use AutoCAD Electrical (the industry standard for Australian electrical documentation), Eplan Electric P8 (preferred for MCC and panel wiring), and MicroStation for infrastructure projects. We deliver drawings in AutoCAD DWG, Eplan native, PDF, and any other format required by your project.

Can you produce hazardous area electrical drawings to AS/NZS 60079?

Yes. Our electrical drafters are experienced in hazardous area classification and documentation for Zone 1 and Zone 2 environments. We produce hazardous area layout drawings, equipment selection documentation, and Ex certification schedules to AS/NZS 60079 series for mining, oil and gas, and chemical processing clients.

Do you produce drawings for solar PV and battery storage systems?

Yes. ASTCAD produces SLDs for grid-connected solar PV and battery storage systems under AS/NZS 4777 and Clean Energy Council guidelines. We produce the SLD documentation required for network connection applications and building permit submissions.

What is the typical turnaround for an electrical SLD or schematic?

A single-line diagram for a standard commercial switchboard is typically completed in 2–5 business days from receipt of engineer’s design inputs. More complex MCC schematics or full plant P&ID sets will vary depending on scope — we provide a fixed-fee quote with a committed turnaround when we receive your project brief.

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Related services: MEP Design | HVAC Drafting | Mechanical Drafting | Structural Design

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