Hospital electrical services regional VIC.

Project overview

ASTCAD delivered electrical services design for a 38-bed inpatient and 4-theatre extension at a regional Victorian hospital. Scope included normal, essential and life-safety power, isolated power systems for theatres, UPS and generator integration, lighting and the medical-gas alarm electrical interface.

The challenge

Patient-area electrical design to AS/NZS 3003 requires Body Protected and Cardiac Protected areas with specific RCD and equipotential bonding arrangements. Theatre isolated power required line-isolation monitoring with operator displays. UPS and generator transfer had to maintain life-safety power without interruption.

Our approach

• Body Protected and Cardiac Protected area classification
• Isolated power supply (IPS) design for 4 theatres with line-isolation monitoring
• UPS and generator design coordinated with mechanical building services
• Lighting design to AS/NZS 1680.2.5 (Hospital and Medical)
• Medical-gas alarm interface and BMS integration

Deliverables

• Single-line diagrams (essential, life-safety, normal feeds)
• Patient-area classification drawings to AS/NZS 3003
• Theatre IPS and line-isolation monitor schematics
• Lighting drawings with circulation pathway emergency lighting
• Commissioning test plans per AS/NZS 3003

Outcome

The extension was commissioned and accepted by the hospital with no electrical defects. The IPS systems passed all AS/NZS 3003 verification tests first time. The hospital’s electrical engineering team commended the documentation quality during their pre-handover review.

How we approach hospital electrical services design

Hospital electrical services design is governed by patient safety classifications that do not exist anywhere else. We design body-protected and cardiac-protected areas to AS/NZS 3003, with the RCD protection, equipotential earthing and socket provisions each classification requires, and document the boundaries of each patient area explicitly on the drawings so certification is unambiguous. Essential supply design covers the generator-backed and UPS-backed distribution tiers, load shedding philosophy and changeover behaviour, because in a hospital the interesting engineering happens in the ten seconds after mains failure. Coordination with medical gas, nurse call and BMS systems is built into the drawing set rather than resolved on site.

Healthcare electrical documentation

Deliverables include patient area classification plans, distribution single line diagrams for normal and essential supplies, switchboard schedules, earthing and equipotential bonding details, and cable schedules. We prepare the documentation to support AS/NZS 3003 certification testing and provide as-built updates after commissioning, keeping the compliance record aligned with what is actually installed.

Coordination with hospital operations

Hospital electrical services design work almost always happens in or beside a live facility, and the design has to plan the construction. We document isolation and changeover sequences that keep patient areas supplied throughout the works, stage switchboard replacements around clinical schedules, and identify every circuit whose interruption needs clinical sign-off before an electrician touches it. Infection control requirements shape containment and access provisions in the documentation. This operational coordination is engineering work, not project management garnish — a technically perfect design that requires an impossible shutdown is not a design the hospital can build.

We support hospital and healthcare electrical projects at any scale, from single-department refurbishments to new clinical buildings. If your project involves body-protected or cardiac-protected areas, engaging the electrical design early keeps the certification pathway clean and avoids the costly discovery that a fitted-out room does not meet its intended patient classification.