Emergency Power Supply2016-10-20T11:43:53+00:00

Emergency Power Supply

An emergency Power Supply system or emergency power supply is only required for specific buildings nominated by a building surveyor/ building certifier under the Building Code of Australia (BCA) in the building approval process. Emergency Power Supply ultimately becomes an essential safety measure in most jurisdictions in Australia.

Building Code of Australia

The Building Code of Australia nominates in three areas the need for a emergency power supply in clauses E3.4 and Specification G3.8 to be included under a building approval, these are:

Part extract of Clause E3.4(e) Emergency lifts follows:

E3.4 Emergency lifts

(e) An emergency lift must-

(i) comply with AS 1735.2 or Appendix A of AS 1735.1; and
(ii) in a Class 9a building serving a patient care area-

(A) have minimum dimensions, measured clear of all obstructions, including handrails, etc complying with Table E3.4; and

(B) be connected to a standby power supply system where installed; and

Part extract of Specification G3.8 Clause 6: (emergency power supply)


(a) If a required path of travel to an exit is within an atrium, a suitable alternative power supply must be provided to operate required safety systems, including sprinkler systems and fire hydrant pumps, air handling systems, alarms, warning and communication systems and emergency lighting circuits.

The following photographs depict emergency power supplies in various buildings.

The following is a part extract of clause I1.1 for an Essential Safety Measure  (as appeared in BCA 2013) known as emergency power supply:


Safety MeasuresBCA Provision for Determining Standard of Performance
Standby power supply systemE3.4

Essential Safety Measures Audit – Emergency Power Supply

It is incumbent on an assessor during an essential safety measures inspection/ audit to determine whether the building has a nominated emergency lift and/or a path of travel to an exit which is within an atrium which requires emergency power supply for fire safety compliance. If either of these exist in the building then they should already be nominated as an essential safety measure in a schedule or determination. A record of the inspection, maintenance and testing of emergency power supply should be recorded in the building’s essential safety measures logbook to allow for the signing of the annual fire safety statement to allow for signing the Annual Statement, Annual Certificate of Compliance, Annual Fire Safety Statement, Annual Maintenance Statement and Annual Occupiers Statement.