Dear M. Filmark,
I’m very well, thank you. I hope that you are also.
In the UK, the British Standard, BS 7671 (The IEE Wiring Regulations) are the national standard to which all domestic and industrial wiring must conform. The 17th edition contains substantial changes to align with European documents.
If you want your installation to be according this standard then I suggest you buy the standard in order to be sure about how the installation is done (calculated and set-up) according to this standard. To get the standard go the website (http://www.theiet.org/publishing/wiring-regulations/).
You could try to find out more about calculations according to British standards based on the following book, also on the IET website(http://www.theiet.org/publishing/wiring-regulations/) “Electrical Installation Design Guide: Calculations for Electricians and Designers”
Now regarding a software that does calculations for electrical installations based on the British standard I’m afraid i cannot help you there.
The software I use, is meant to be used to calculate installations according to either Belgian or French regulations (Note that calculation rules in the software are based on the European guide of calculating Low Voltage installations, R064-003).
Hoping that my reply will help a bit.
Best of luck,
Ed Dhe