Body-protected electrical areas, explained
What medical and dental rooms need electrically
Which rooms have to be body-protected areas, what goes in them, how they’re signed off in your state, and how often they’re tested. In plain English, for practice managers, owners and fit-out builders.
The short answer
A patient room wired to AS/NZS 3003:2018 (including Amendment 1:2019): outlets on sensitive 10 mA RCDs, the earthing its classification needs, identified outlets, the RCDs and a green sign in the room. Signed off before use, then tested at least every 12 months.
Which rooms usually need one
Any room where mains-powered medical equipment is connected to the patient. The practice decides each room’s classification, with input from clinicians, suppliers and the electrician.
Inside a body-protected room
A dental surgery from above, with the corridor beside it. The numbers match the list.
- 1Protected outlets. Every outlet in the room on a 10 mA RCD and identified, so it’s clear which ones are protected. Outlets just outside the room, within 2 metres of the door, are RCD protected as well.
- 2The chair’s own circuit, sized to the supplier’s spec and on a 10 mA RCD like every other outlet in the room. Imaging equipment in the room gets its own protected circuit too.
- 3The green sign, inside the room where you see it as you walk in, with the test label showing when the room was last tested.
- 4A cleaners’ outlet, beige, on its own circuit from the switchboard with its own 10 mA RCD, so cleaning gear never plugs into the protected outlets and a cleaner’s vacuum can’t trip the room. It can be inside or outside the room, but within 15 metres of the furthest point of the room measured the way you’d walk it: through the doorway, not through walls.
- 5The room’s 10 mA RCDs, in the room: a wall plate or a small switchboard for that room only, labelled for the room, with the indicator light and test button where staff can see them. One RCD can protect up to 12 points (outlets and hard-wired equipment both count), so a room with more points simply has more RCDs.
- 6The chair’s isolator. The chair’s supply is usually under the base where nobody can reach the plug, so an isolating switch within reach, switching all live conductors, lets the chair be shut off for servicing or in an emergency, as the Wiring Rules require for equipment whose plug isn’t accessible.
Every rule with its section number, plus the heights on the wall and the 2-metre rule at the door: the rules, one by one.
What the green sign in the room means
The green sign tells staff and visiting trades the room is body-protected. Check three things on it:
- The symbol: it’s a body-protected area, not cardiac-protected.
- The test label: when it was last tested, and by whom.
- The date: if it’s more than 12 months old, the room is due.
How it’s signed off in your state
AS/NZS 3003 is the same joint standard across Australia and New Zealand. Who certifies, inspects or audits the work is set by each state. Pick yours.
Victoria
Two steps, two people
In Victoria, electrical installation work in a patient area is prescribed electrical work. Your electrician installs it, tests their own work and issues the Certificate of Electrical Safety, then an independent ‘M’ class licensed electrical inspector inspects and tests the room to AS/NZS 3003 and fits the test label before it’s connected to supply. The 12-month routine test is different: Energy Safe Victoria treats periodic testing that involves no installation work as outside the prescribed-work system, so the practice (or its electrician) organises it, and in practice it is usually carried out by an M class inspector, who knows the tests and fits the new label.
- Who certifies: Your electrician completes and tests the work and issues a prescribed Certificate of Electrical Safety.
- Independent inspection: Yes. An ‘M’ class licensed electrical inspector (patient areas) inspects the work before it’s connected to supply. The inspector can’t be someone involved in installing it.
- Testing at install: Tested to AS/NZS 3000 before it’s energised, then to AS/NZS 3003 after energising and before the room is put into service.
Regulator: Energy Safe Victoria
Victoria in full →The life of a body-protected room
- 1Plan and classifyBefore the walls close.
- 2InstallRCDs, circuits, outlets.
- 3Test and certifyBy your electrician.
- 4Inspection or auditWhere your state requires it.
- 5Retest every 12 monthsAnd before any alterations.
Planning a fit-out?
The one-page checklist of what to decide before the walls close: room use, equipment specs, switchboard space, circuits, cleaners’ outlets and the sign-off booking.
Need an electrician who does this?
Pick your state.
Other states and New Zealand
Pick your state for its rules and the electricians listed there, or ask us to find one. Electricians and builders can get listed.
LND Group is the site publisher’s own business. How listings work.
Common questions
Does a GP consult room need to be body-protected?
Only if mains-powered medical equipment is applied to the patient there, such as an ECG. A room used only for talking and examination often isn’t a patient area.
How often does a body-protected area need testing?
AS/NZS 3003:2018 requires routine inspection and testing at intervals not exceeding 12 months. Alterations shouldn’t go ahead until the area has been tested within the last 12 months.
Who decides if a room is body-protected?
The practice, based on how the room will be used, with input from clinicians, equipment suppliers or biomedical engineers, and the electrician.
Is body-protected the same as cardiac-protected?
No. Cardiac-protected areas are a higher classification for rooms where a direct connection to the heart is possible, such as cardiac catheter labs and some theatres and intensive care areas. Most dental and general medical rooms are body-protected.
Who inspects a body-protected area?
It depends on your state. In Victoria an independent ‘M’ class licensed electrical inspector must inspect it before it’s connected to supply, and in New Zealand a registered electrical inspector does. Other states rely on the electrician’s certificate with regulator audits: pick your state above.
More questions, answered
- What does a new dental surgery need electrically?
- How many power points can a dental surgery have?
- Do I need an electrician to move a dental chair?
- How often does a medical or dental room need electrical testing?
- What is the green sign in a dental surgery or treatment room?
- Can a GP consult room be used for ECGs?
- Who certifies the electrical work in a dental or medical fit-out?
- What is a body-protected electrical area?
- Body-protected vs cardiac-protected: what is the difference?
- What is AS/NZS 3003?
- Why do medical and dental rooms need 10 mA RCDs?
- Does a laser or IPL room need to be body-protected?
- What happens if the 12-month test on a body-protected area is overdue?
- Can an existing room be upgraded to a body-protected area?
- What to ask your electrician before a medical or dental fit-out
Questions or corrections
Ask a question about body-protected areas, or tell us if something here is out of date for your state. We read everything and keep the guide current.
Or email info@bpea.com.au