The Australian Standard AS/NZS3000 (the wiring rules) is being updated and will be released later this year.
SAI Global has released a summary of a selected summary of the major changes in the new Wiring Rules prepared by the Chairman of Committee EL-001. The Committee ballot to approve the new draft is expected in February 2018. A publication date for the new Wiring Rules has not yet been announced but will follow the ballot later in 2018.
Some significant changes include:
Previously in residences, all final sub-circuits supplying socket outlets and lights had to be protected with 30mA RCDs. In future, all final sub-circuits in residential dwellings must be RCD protected. No exceptions.
For non-residential, final sub-circuits up to 32A capacity supplying socket outlets must be 30mA RCD protected. Hard-wired equipment circuits of this capacity should be.
All lighting final sub-circuits must be RCD protected.
Alterations requiring a change to a circuit configuration trigger the requirement for 30mA RCD protection for that circuit. Like-for-like repairs do not.
Where all protection devices are replaced in a switchboard, all final sub-circuits must be RCD protected.
Emergency egress requirements have been improved.
Clearances of 1m from accessible faces of closed switchboards and 600mm from open doors or racked-out equipment are required.
Switch room door heights and widths have been increased to 2.2m and 0.9m respectively.
Two emergency exit paths are required if a switchboard exceeds 800A or is more than 3m in length.
Main switches must be manually operated and not controlled by electronic devices
Kitchens, down lights, outbuilding and generators
A 150mm zone either side of cooktops and extending upward to the range hood, ceiling or 2.4m will apply, where switches and socket outlets must not be installed, removing the need to reach across hot surfaces.
Classifications of downlights must be marked on the light and the packaging to indicate where they may be installed. No classification means they must not be installed. ‘IC’ or ‘IC-4’ lights may be installed anywhere in an installation.
Outbuildings separated by a land area are renamed ‘individual outbuilding’ and ‘combined building’ will refer to more than one structure on a common slab (eg several residential units on a single slab).
Generators and network operators’ equipment must not be installed within the zones around swimming pools, spas and water features. Generator systems must comply with the new version of AS/NZS 3010.