Electrical measurements are key element in ensuring the safety of electrical and lightning protection system (LPS) installation. When executing measurements, we should verify the operation of electrical installations, safety used materials and correctness of the execution of electrical and LPS installations. For proper execution of measurements, knowledge of regulations is necessary and it is a must to use only instruments which are designed for electrical measurements. Measurements include a large system of separate measurements. In my degree, I will present you only one part: measurements of earth resistance. It is working in different ways by using current clamps or ground electrode.
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