Examples Class 1 Electrical Appliances

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.

Examples class 1 electrical appliances.

Appliances without the double box symbol are of class 1 construction and need the earth continuity and the insulation resistance tests carried out during pat testing. If the appliance is in a metal enclosure like an electric fire or a washing machine then it is relatively easy to clip the earth test lead to a metal point. A typical example of a class 0 appliance is the old style of christmas fairy lights. This makes electrical equipment very safe to use.

When pat testing class 1 appliances earth continuity and insulation resistance tests are carried out. These appliances do not have their chassis connected to electrical earth. Examples of class 1 equipment are kettles toasters irons microwaves electric heaters fridges freezers washing machines and tumble dryers etc. I have come across a few instances of a two core extension lead powering a desk complete with computers monitors printers etc.

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. However equipment of this class is common in some 110 v countries and in much of the 220 v developing world whether permitted officially or not. It also follows another standard ul 1310. Class 1 appliances are as follows.

Class iii appliances use an isolating transformer. Some examples of class 1 appliances are toasters kettles washing machines and irons. If it is made of metal it must be a. Typical class 1 items toasters kettles washing machines irons and many more.

There is no symbol for class 1. Any appliance with 3 core cable live neautral and earth cable. 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. Examples of class iii appliances are laptops mobile phones and low energy light bulbs.

Class iii appliances are identified by the class iii symbol. The symbol for class i items looks like this and should be found somewhere on the appliance. The point is you need to look at the markings on the appliances the flex used and inside the plug to determine what class an appliance is. Appliances can be class 1 or class 2.

The class 2 label is related to power supply not safety. It is not a simple as it s an extension lead therefore it is class 1 etc.