Thursday, January 2, 2020

Classes Of Portable Appliances Test

 What Are The “Electrical Classes” In PAT Tests?
Electrical appliances are mainly classified in class 1, 2 or 3, class 1 being the most dangerous and class 3 the least dangerous.
The class of a device determines whether it should be PAT tested and to what extent. Class 1 devices require a full PAT test, Class 2 devices need a PAT isolation test, and Class 3 devices do not need to be PAT tested at all.
Class 1 Devices
This type of electrical equipment has only basic insulation and rests on earth for its protection.
Class 2 Devices
This type of electrical equipment has additional insulation and therefore does not depend on an earth for protection, which makes it safer.
Class 3 Devices
Class 3 devices are low voltage devices and are the safest class of electrical devices. Their charging cables may require a PAT test.
Examples of class 1 Devices:
Class 1 devices carry this symbol:
PAT test - Class 1 electrical symbol
The following devices are generally (but not always) Class 1 electrical:
1:Fridges
2:Freezers
3:Dishwasher
4:Microwave
5:Toaster
6:Kettle
7:Iron

Image result for home kitchen equipment
Examples of class 2 devices:
Class 2 devices carry this symbol:
PAT test - Class 2 electrical symbol
The following devices are generally (but not always) class 2 electrical:
1:Desktop Printer
2:TV
3:Drill
4:Food Mixer
5:DVD player
6:CD player
Image result for combine Images of laptop torches and camera
Examples of class 3 devices:
Class 3 devices carry this symbol:
PAT test - Class 3 electrical symbol
The following devices are in electrical class 3:
PAT test - list of class 3 electrical devices
1: Laptops
2: Mobile Phone Charger
3: Torches
4: Cameras
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