Why we make earth connection with Transformer Body and What will be the minimum size of copper wire as per code with respect to KVA rating of Transformer?
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Answer Posted / Shivram Meena
The earth connection with the transformer body serves the same purpose as mentioned in the previous answer: to prevent electric shock hazards and protect equipment from voltage surges. The minimum size of copper wire for earthing a transformer depends on various factors, including the transformer's KVA capacity and local electrical codes. As a general guideline, use AWG table to determine the appropriate gauge of copper wire based on the required current carrying capacity.nnFor instance, if the transformer has a KVA rating of 100, you might need a copper wire with a diameter of about 6mm (AWG4) or larger. Always consult with an electrician and follow local electrical codes for accurate calculations.
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