Warrants of electrical fitness
The application of NZS 3019 to issue a WOEF makes the assumption that the Connectable Installation was complaint with the technical wiring requirements of AS/NZS 3001 (or one of it's predecessors (including ECP 1)) at the time of it's construction. NZS 3019 has not been written to have a particular focus on the requirements for 110 volt vehicles. It is important therefore to understand how the critical safety requirements should be applied in respect to 110 volt vehicles.
Any WOEF issued for a Recreational Vehicle or Caravan must be issued in accordance with NZS 3019.
The critically important requirements of NZS 3019 for 110 volt systems are:
7.3.2 Exposed live parts
In this regard the safety dimensions of any appliance plug are critical. The distance set in AS/NZS 3112 for the separation of the pins from the plug edge is required to be no less than 9 mm.
Exposed live part evaluation also applies to the isolation capacity of any transformer used. It is critical that the transformer's compliance with safety isolation Standard is verified to ensure.
That 230 volts does not appear during any faults on the 110 volt circuit. The recognised Standards are AS/NZS 61558 and AS/NZS 3108 (now superseded).
7.4.6 Continuity of socket outlets
NZ installation rules require that socket outlets used with polarised supplies be polarised, (NZS 3019). Any socket outlet that is not polarised that is used with a polarised supply is in contravention to that requirement. A socket outlet that allows the use of reversible plugs does not meet this requirement.
In addition, NZS 3019 requires socket outlets to have an earthing connection. (Note this is also relevant to the class 0 / class 01 restriction).
Non-polarised, or reversible, socket outlets, and socket outlets without an earthing connection are not complaint with the requirements for a WOEF.
7.4.9 RCD operation
The performance of any RCD must be completely checked by testing, unless the RCD has confirmed compliance with one of NZ's RCD Standards, such as AS/NZS 3190, AS/NZS 61008 and AS/NZS 61009.
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