5.14Discussion#
In addition to these, a number of other installations were reviewed. These are discussed following.
5.14.1Lift sump pumps connected to socket outlets#
Lift sump pumps connected to socket outlets do not require RCD protection if all the requirements of Exception 6 are complied with; however, the socket outlet must be IP 66-rated, switched, and must be on a dedicated circuit with no other outlets.
5.14.2Busway platform stairway lighting#
Busway platform stairway lighting circuits and other building lighting including under soffit platform lighting must be protected by RCDs. This is standard industry practice for buildings.
Luminaires must be selected so they are suitable for the application. Where they are exposed to weather or in a polluted environment, they must be rated minimum IP 65 to minimise ingress of moisture, dust and vermin that could result in nuisance tripping of the RCD.
At least two lighting circuits must be provided. Luminaires must be connected evenly across the circuits and located suitably such that, in the event of RCD tripping, no area is without appropriate lighting.
5.14.3Non-AS/NZS 1158 pedestrian pathway lighting#
Where a system of emergency and exit lighting is installed, non-emergency lighting and single point emergency and exit lighting circuits are required to have RCDs.
Where power to emergency and exit lighting is supplied from a central system in accordance with AS/NZS 2293.1, RCDs must not be incorporated into the lighting circuits.
Circuits supplying emergency and exit lighting should have an auxiliary contact so that an alarm can be raised when the lights have been activated due to the tripping of the RCD or other cause of loss of power.
5.14.4Non-safety related systems#
There are a number of systems installed in the roadway that are not directly related to traffic safety. These include such items as webcams, traffic survey sites, travel time signs, parking guidance systems, advertising signs and billboards. These must comply with the RCD requirements of AS/NZS 3000.