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Thread: Short Circuit Current calculation - Fault level

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    Short Circuit Current calculation - Fault level

    I had a question come through on calculating the fault level on single core cables in parallel from a transformer to a main panel in a factory.
    Was either dreaming or hit the delete button on messaging without realizing.

    Personally if the distance was short I would not bother going through the calculation as it would reduce by an insignificant amount and not worth the time and effort.I would take the Transformer fault level and size my main circuit breaker accordingly.

    I have attached a calculation method and example compiled by Schneider which takes you through the steps.
    Would be interested to know what the results are after the calculation and if it was worth the effort.
    Attached Files Attached Files

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