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The houses are 100 years old protected by 100mA RCD's. Sorry I was thinking of a TN system regarding ze reading, my bad! If there were to be a Neutral spike then that would imbalance both houses rcd's even if they are fed from different phases right?

Hi all, I have a customer that has their main RCD isolator tripping at the same time as there next door neighbour. The electricity board has put them on separate phases or at least says they have and the tripping continues. They said the have carried out a ZE from the house and its 55ohms, no...

Wow thanks everyone! I qualified in 2009 and have been working partime for myself. I have a full time job doing a different trade. So although I do have the experience in the design,  install and inspect and test, I just havn't had to do it all in such a big scale. When i say my first year...

Hi Technician, Many thanks for you input, ill put those in my list. Your comment about "not stating what it is" is actually another bullet point in itself. So I have added, wall fabric, floors, loft boarding or not. Amount of bedrooms will come under the socket/switch/light count i presume?

Ok, so I am an Elecsa registered sparks and in my first year of going it alone. I have a rewire to go and quote for and although I am confident in carrying out the works, I would appreciate if there was a check list to base my quote on.  If anyone feels like posting a few bullet points...