Classes of Electrical Items One of the key elements of PAT testing know how to identify the class of a certain appliance and the testing it then requires. Class 1 items refer to those with wires which have insulation only one layer thick and they therefore need to be checked as being earthed. Class 2 items however has wire insulation with two layers and as a consequence do not need to be tested for an earth. Class 3 items, which should come with a labeled transformer, are appliances with a low voltage supply that has to be below. They are often referred to as being supplied with Separated Extra Low Voltage. Class of items should be labeled as such and therefore appliances without a label should be treated as Class 1. PAT Testing Equipment as there are a variety of tools that can be employed to carry out PAT testing depending on the particular requirements of the job at hand and the capabilities of the PAT tester. The most basic testing devices that are generally used by staff working as in-house testers within an organization are Pass/Fail devices, which, as the name suggests simply give the user a pass or fail reading. These devices are used by in-house testers for test and tag NZ because of their simplicity and the fact that they therefore do not need the user to have advanced skills and training. The devices themselves will fundamentally test for pass/fail against the criteria of earth continuity, insulation resistance and a wiring check. Some, however, also have accompanying functionality, such as the ability to print the results on labels, which can be tagged to the appliance being tested, and the option of being battery powered to allow the user to move around between appliances more freely. Whilst they may be able to perform tagging the testers won't store the results and they will therefore need to be logged elsewhere. For those PAT Testers who are more experienced or highly trained, usually at specialist PAT testing companies, there are more advanced PAT devices available which provide more in depth testing metrics and more advanced functionality to handle those results. For example, test and tag NZ devices can perform checks such as fuse, lead polarity and RCD tests in addition to the basic functionality and then display and record the more complex readings. Latterly, computerized PAT testers have allowed users to actually store, analyze and compare these results on the device itself rather than transfer them to another computer for analysis. With the availability of training, tools and third party PAT Testing companies there is no excuse not to ensure that the electrical systems in any workplace aren't as safe as can be. Apart from testing and tagging, some other services involved in appliance testing offered by commercial electrical contractors are installation of emergency lighting, electrical tagging portable appliances and many more. You can get complete details on various service providers of testing and tagging online. The sticker means that the particular item or appliance has been tested already and it is safe to use. So, if you are looking for best test and tag NZ service then contact Total Test & Tag. https://youtu.be/LLFM68Y4ywY FOR MORE INFO-: https://www.totaltestandtag.co.nz/
