Body-Protected Areas Explained for Practice Managers

Body-protected areas explained, for practice managers

A body-protected area is a room in a medical, dental or allied health premises where a patient may be connected to mains-powered equipment through their skin, and where the electrical installation is built to a stricter standard, AS/NZS 3003, than an ordinary room. In practice that means 10-milliamp safety switches instead of 30, specific earthing, marked outlets, and a test every 12 months with a record. Most treatment rooms need one. Waiting rooms don't.

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What the standard is for

An ordinary 30 mA safety switch is designed to stop a fatal shock to a healthy person through the skin. A patient with an electrode on their chest, a probe in their body or a wet dressing has that protection bypassed; far smaller currents can be dangerous. AS/NZS 3003 exists so the electrical installation in rooms where that happens is built to a tighter tolerance. It classifies areas as body-protected or cardiac-protected depending on how close the connection gets to the heart.

Which rooms need one

Room	Classification
Consulting room where only examination is done, no mains equipment on the patient	Usually not classified, but check
Treatment room, procedure room, dental surgery	Body-protected
Physiotherapy with electrotherapy, ultrasound, TENS	Body-protected
ECG, sleep studies, any monitoring room	Body-protected
Rooms where a conductor is placed in or near the heart (cardiac catheter, some theatres)	Cardiac-protected
Waiting room, reception, offices, staff room	Not classified

The classification is decided by what happens in the room, not by what it's called. A "consulting room" that's used for minor procedures with mains equipment is a body-protected area. We work through each room with the practice manager and write it down, because that list is what the fit-out, the testing and the accreditation audit all refer back to.

What's different about the electrical installation

10 mA RCDs on the circuits supplying the patient area, rather than the standard 30 mA.
Equipotential earthing with an earth bar in the room and earth connections for equipment, so everything a patient could touch is at the same potential.
Marked outlets: socket outlets in the protected area carry identification so staff know which outlets are covered.
Dedicated circuits for the area, separated from general power.
A record of the classification, the installation and every test.

Kris Electrical Services electrician using a test instrument on the wiring of a modular building unit — Testing a modular building's wiring with the cabling still open.

Testing

AS/NZS 3003 requires the protected area to be tested after installation and then periodically, in practice every 12 months: the RCDs' trip current and time, the equipotential earthing resistance, and the outlets. The results are recorded and kept on site. Practice accreditation (RACGP, QIP, NSQHS and the like) checks for the record, and so does the certifier on a new fit-out. Our compliance testing service folds this into the same annual visit as the RCD and emergency lighting tests.

The fit-out mistake

The expensive version of this story is a medical tenancy fitted out by a general commercial electrician who didn't know the rooms needed classifying. The walls close, the practice opens, and the accreditation auditor asks for the AS/NZS 3003 record. Retrofitting 10 mA protection and equipotential earthing into finished rooms costs several times what it would have cost during the fit-out. If you're planning a health and medical fit-out, get the room classification done at the drawing stage.

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Questions we get on this

Does a GP clinic need body-protected areas?

Any room where a patient is connected to mains-powered equipment, which includes treatment rooms used for ECGs, minor procedures or wound care with mains equipment, is a body-protected area. Pure consulting rooms without such equipment usually aren't. We classify room by room.

Who's responsible, the landlord or the practice?

The installation in the tenancy is normally the tenant's, and the annual testing certainly is. The classification and record belong with the practice, because accreditation is the practice's obligation.

How long does the annual test take?

A typical GP or dental practice with 4 to 8 protected rooms is a half day, done outside consulting hours or room by room around appointments. The record is left on site the same day.