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For what does PELV require protective conductor? And also what is differences between PELV and FELV?

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For what does PELV require protective conductor? And also what is differences between PELV and FELV? Both of them require PE conductor


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    PELV may also have earthing for functional reasons, i.e. the protective conductor is a combined protective and functional earthing conductor. This may be, for example, for electromagnetic compatibility, measurement purposes, or discharge of static electricity.


    BUT - that does not make it FELV.
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    PELV may also have earthing for functional reasons, i.e. the protective conductor is a combined protective and functional earthing conductor. This may be, for example, for electromagnetic compatibility, measurement purposes, or discharge of static electricity.


    BUT - that does not make it FELV.
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