Essential equipment may come under Exception 6 of AS/NZS 3000 Clause 2.6.3.2.1, provided all of the following specified requirements are complied with:
Exception 6: Where all socket outlets on a final sub-circuit are installed for the connection of specific items of equipment, provided that—
The socket outlets are used to connect specific items such as essential ITS equipment or systems.
(a)the connected equipment is required by the owner or operator to perform a function that is essential to the performance of the installation and that function would be adversely affected by a loss of supply caused by the RCD operation; and
The equipment is essential and loss of functionality of that equipment as a result of tripping of the RCD would adversely affect the operation of the system.
(b)the connected equipment is designed, constructed and used in such a manner that is not likely to present a significant risk of electric shock; and
The equipment is double-insulated or effectively earthed and work procedures are in place concerning the use of the equipment without RCD protection.
(c)the socket outlet is located in a position that is not likely to be accessed for general purposes; and
Unprotected socket outlets are for specific essential equipment only and must be separated from general purpose socket outlets. General purpose socket outlets must be RCD protected.
Table in words
Unprotected socket outlets are for specific essential equipment only and must be separated from general purpose socket outlets.
General purpose socket outlets must be RCD protected.
(d)the socket outlet is clearly marked to indicate the restricted purpose of the socket outlet and that RCD protection is not provided.
All non-RCD protected socket outlets must be clearly labelled.
