Class 1 and class 2.
Class 1 and 2 electrical appliances.
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Examples of class 1 equipment are kettles toasters irons microwaves electric heaters fridges freezers washing machines and tumble dryers etc.
Pat testing list of class 2 electrical appliances.
A class ii or double insulated electrical appliance is one which has been designed in such a way that it does not require a safety connection to electrical earth ground.
Of course you could look inside the plug a class 2 appliance should only have 2 wires brown and blue whereas a class 1 will have 3 wires brown blue and green yellow however it is not unusual to find appliances which have been rewired or modified bodged with the wrong cable so the only way to.
Class 2 equipment has supplementary insulation and therefore does not rely on an earth for protection and is easily identified by the double square symbol and will receive an insulation test.
Posted on february 9 2017.
Class iii appliances use an isolating transformer.
May be entirely supported by hand during operation.
Class 2 appliances are sometimes referred to as double insulated.
But does not include a tool portable type promoted exclusively to industry.
Drill as nzs 60745 2 1 sander or polisher other than disk types as nzs 60745 2 4 circular saw as.
The basic requirement is that no single failure can result in dangerous voltage becoming exposed so that it might cause an electric shock and that this is achieved without relying on an earthed metal casing.
This is to ensure that if one of the protection layers were to fail there is the back up of the second layer still in place.
Class iii appliances are identified by the class iii symbol.
Appliances can be class 1 or class 2.
Surrey fire safety ltd heathrow branch 450 bath rd heathrow longford london ub7 0eb.
The class 2 label is related to power supply not safety.
An electrical appliance that is for machining drilling sawing or surface preparation.
In simple terms a class 1 appliance has an earth connection whereas a class 2 appliance will have two layers of insulation protecting the user from the mains inside.
Examples of class iii appliances are laptops mobile phones and low energy light bulbs.
Class 1 appliances with class 1 appliances the user is protected by a combination of basic insulation and the provision of an earth connection thus providing two levels of protection.
All electrical appliances using mains voltage have to provide at least 2 levels of protection to the user.
There is no symbol for class 1.
This makes electrical equipment very safe to use.
Both class 1 and class 2 equipment require pat testing although it is important to differentiate the two as they are tested differently.
