Added advanced earth cable selection to the Cable Size Calculator
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Hi Reader I am just letting you know. I worked on the maximum demand calculator for the past six months. I have now returned to the cable size calculator. I added advanced earth cable selection for single-core cables. When the earth cable size is selected as "Auto", the selection works as follows: Step 1: The calculator starts with the minimum recommended earth size from AS/NZS 3000, Table 5.1. Step 2: The earth cable size is increased if the earth fault current rating is too low. Step 3: The earth cable size is increased if the earth loop impedance is too high. In "Auto" the earth size can be increased up the size of the active cable. If you need a larger earth cable, you can still select the earth size manually. Previously, the calculator did not increase the earth cable size beyond the minimum recommended size. It suggested a larger active-earth cable combination, which was not optimal. Example of advanced earth cable selection Click to try. Please let me know if you have any questions or suggestions. Adam van Staden This information does not constitute legal, professional or commercial advice. JCalc Pty Ltd gives no guarantees, undertakings or warranties in this regard, and does not accept any legal liability or responsibility for the content or the accuracy of the information so provided, or, for any loss or damage caused arising directly or indirectly in connection with reliance on the use of such information. |
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