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Class 1 appliance with no exposed metal work to connect test lead too
Former Community Member
OK 3rd problem class one appliance with no exposed metal work to connect test lead too how can I carry out the earth bond test given it is a class 1 appliance and not a class 2 appliance like this
Plastic class 1 devices where the earth conductor of the mains cable is connected to a metal chassis inside, or is used for screening EMI, has to be tested as class 1 rather than class 2 because of the potential for earth leakage current that could trip a RCD.
There was a (at least one) case of a plastic class 1 device in a hospital that would trip a RCD because of a fault resulting in excessive earth leakage current, but it successfully passed the class 2 EST that was being used at the time.
Plastic class 1 devices where the earth conductor of the mains cable is connected to a metal chassis inside, or is used for screening EMI, has to be tested as class 1 rather than class 2 because of the potential for earth leakage current that could trip a RCD.
There was a (at least one) case of a plastic class 1 device in a hospital that would trip a RCD because of a fault resulting in excessive earth leakage current, but it successfully passed the class 2 EST that was being used at the time.
OK 3rd problem class one appliance with no exposed metal work to connect test lead too how can I carry out the earth bond test given it is a class 1 appliance and not a class 2 appliance like this 