What does a new dental surgery need electrically?

A dental surgery is a patient area, so it is wired as a body-protected area to AS/NZS 3003, not like an ordinary office. That means every outlet in the room on a sensitive 10 mA safety switch (RCD), the RCDs in the room itself, the chair on its own protected circuit sized to the supplier’s spec, imaging equipment on its own protected circuit, the protected outlets identified, a green body-protected area sign inside the room, and a cleaners’ outlet on a separate circuit within 15 metres of the room.

Beyond the room: dedicated circuits for sterilisers and compressors, enough switchboard capacity for all of it, and data for the chair, imaging and practice software. The work is tested to AS/NZS 3003 before patients are seen, signed off the way your state requires, then tested again at least every 12 months.

The expensive mistakes happen before the walls close: a chair supply in the wrong spot, no space for the RCDs in the room, a cleaners’ outlet forgotten. The fit-out checklist covers what to decide early.