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JohnW2 that diagram is EXACTLY what I have been looking for! Makes it all much clearer to fully understand rather than trying to follow written instructions. Really sorry that I was unable to reply sooner. I really think there should be a sticky regarding volt drop and the principles involved in...

Sorry for the late response. I think I may have confused u all. No, I bought the book to teach myself as a head start before I embark on a lifetime of studying. I thought it would be easier to learn by mysef first to save stress later on. Anyway, besides this, thanks for the replies. The...

As part of my studies, I need some help with a question I have regarding volt drop. I have a copy of Electrician's Guide 17th Edition BS 7671: 2011. I understand everything covered in the volt drop section, but it doesn't appear to mention how volt drop is calculated in a circuit in...

diagram

Hi, this is what gets me but I don't know how to ask correctly. How would you extend an installation with 2 circuits when I assume they both run from the CU? They would be the same length surely so how what would you gain by having 2 separate circuits? Does anyone understand? Could do with...