Hi Reader I am just letting you know. I added electrode images to the Arc Flash Calculator. Plus a few other improvements. 1. Electrode images 2. Model limit validations I added the IEEE-1584 model limitations to the field validations, including voltage, conductor gap and enclosure size. For example: 2. Simplified equipment types I reduced and simplified the list of typical equipment types. They are used to prefill the working distance, conductor gap and enclosure dimensions with typical...
about 1 month ago • 1 min read
Hi Reader I am just letting you know. I made a few small improvements and fixed defects on the Cable Size Calculator. Improvements I added a confirmation window for the reset button. I added a warning for the user to raise the ambient temperature for cables installed in ceilings. I added step-by-step calculations for the phase and earth fault at load. I improved the step-by-step calculations for maximum earth loop distance. I added new content to explain maximum loop distance calculations. I...
4 months ago • 1 min read
Hi Reader I am just letting you know. I noticed some confusion between the parameters: "Number of Parallel Cables" under Cable Type, and "Number of Cables" under Installation. So I made a few changes to the Cable Size Calculator to make it more intuitive. 1. Updated parameter names for "Number of Parallel Cables" under Cable Type and the "Number of Cables" under Installation. 2. Limited maximum "Number of parallel cables". It is now limited to what the installation supports. For example,...
5 months ago • 1 min read
Hi Reader I am just letting you know. I have added conduit sizing to the Cable Size Calculator. It is based on Tables C10, C11 and C12 in AS/NZS 3000:2018. It covers single- and multi-core circular cables. Support for flat cables will be added later. See the images below. Click here to try. Please let me know if you have any questions or suggestions. I appreciate your feedback. Input Results Adam van StadenLinkedIn Profile This information does not constitute legal, professional or commercial...
7 months ago • 1 min read
Hi Reader I am just letting you know. I have added Terasaki (NHP) MCCBs to the Cable Size Calculator. It includes the A and P range (up to 630A), with thermal-magnetic trip units. Please let me know if you need electronic trip units or MCCBs with a higher current rating. Note that I have made some adjustments to the let-through energy curves. The calculator now reads from continuous curves instead of using fixed points, which should result in slightly lower let-through energy values. Please...
8 months ago • 1 min read
Hi Reader I am just letting you know. I have changed how aluminium earth cables are calculated in the Cable Size Calculator. 1. Minimum aluminium earth sizes I revised the earth size selection from IEC 60364-5-54 (Table 54.2) to sizes that I calculated based on AS/NZS 3000 (Table 5.1). I originally used the IEC table because AS/NZS 3000 specifies only copper earth sizes. It does not include aluminium earth sizes. The benefit of this change is that some of the new sizes are smaller than those...
10 months ago • 1 min read
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...
11 months ago • 1 min read
Hi Reader Just letting you know. Subscribers can now save calculations in the Maximum Demand Calculator. See the images below. Save a calculation Open a saved calculation Click to try. Please let me know if you have any questions or suggestions. Adam van StadenLinkedIn Profile 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...
12 months ago • 1 min read
Hi Reader Just letting you know. I did a major update to the Maximum Demand Calculator. It includes: New features. Multiple living units. Improved PDF report layout. Click to try. Please let me know if you have any questions or suggestions. New Features Blocks of Living Units PDF Report Updates Click to try. Adam van StadenLinkedIn Profile This information does not constitute legal, professional or commercial advice. JCalc Pty Ltd gives no guarantees, undertakings or warranties in this...
about 1 year ago • 1 min read