Class 1 with three pin plugs, one of them called earth wire, like toasters,washing machine... Class 2 can be two or three pin plugs balabala, plus a link from government http://www.med.govt.nz/energysafety/documents/legislation-policy/electricity-act-regulations-codes/standards-and-codes-of-practice/NZECP%2050%202004%20New%20Zealand%20Electrical%20Code%20of%20Practice%20for%20Repair%20and%20Maintenance%20of%20Domestic%20Electrical%20Appliances%20by%20the%20Owner%20of%20the%20Appliance%20%20-%20Published%2027%20July%202004%20.pdf
Most important thing is to check the expire date on a label of the machine before operate!!!!!
Also, not to overload a circuit, and always use a RCD device!
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