Hospital electrical services regional VIC.
Case study: electrical services design for a regional Victorian hospital extension — including essential and life-safety power, isolated power systems for operating theatres, UPS and generator integration to AS/NZS 3003 (Patient Areas) and AS/NZS 3009 (Emergency Power).

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.