The Maximum Demand Calculator calculates Maximum Demand, according to the rules in Appendix C of the Wiring Rules (AS/NZS 3000:2007).
At the moment it only performs calculations for Houses and Units. In the near future it will also be able to calculate maximum demand for other installation types, like offices, factories, hotels, etc.
The Maximum Demand Calculator operates over the internet, so you can use it from your internet connected computer or mobile phone (including iPhones). You don't have to download or install anything. Just click on Register, and then go to "Add new job" to get started.
The Maximum Demand Calculator is free.
Anyone can register and use the Maximum Demand Calculator. However all electrical installations must be performed by a licensed electrician.
The Maximum Demand Calculator was created by David Webster with inspiration from Ben Franz.
David Webster is a professional software developer, with a Bachelor of Applied Science. He lives in Berwick, Victoria with his wife Jess and two dogs.
Ben Franz is an A-Grade Electrician, he lives in country Victoria with his family.
The Maximum Demand Calculator is still undergoing testing, so you need to double check its calculation results against the official reg book (you can buy the reg book from the SAI Global Infostore). If you find any mistake made by the Maximum Demand Calculator, please use the Contact link to let David know.
You can Buy Standards Here.
Two people have now mentioned this to me. I will need to investigate the proper way to calculate 3 phase loads and update the Maximum Demand Calculator.