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 Topic Title: split supply Topic Summary: Created On: 28 October 2008 08:25 PM Status: Read Only Linear : Threading : Single : Branch
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 28 October 2008 08:25 PM carlosreid Posts: 11 Joined: 14 July 2004 Hi all, went to look at a job today, the owner wants to convert a house into 2 flats, not done anything like this before. 100 amp fuse, TN C S supply. Can I split the 1 supply for the 2 flats, he would like a landlords meter for the second flat, so he could then work out the bill for each flat, each flat will have 2 x 32A and 2x 6A circuits . Or have a new supply put in for the top floor flat? He would like to keep the cost down. ------------------------- snoop 28 October 2008 08:28 PM spm Posts: 194 Joined: 23 October 2005 new supply really oh and apply early like now, espesially in london, you wont believe the griev i had , 28 October 2008 09:12 PM Inrush Posts: 743 Joined: 19 December 2007 Carlosreid can you clarify the design loads proposed for each flat i.e. 2x Ring, 2x Lighting? Assuming you have the above arrangement you could use the existing supply and sub meter each flat: First Flat Ring 1 = 32A Ring 2 = 32A x 0.4 (Diversity Factor) = 12.8A Lighting 1 = 2A (Assumed load with diversity applied) Lighting 2 = 2A (Assumed load with diversity applied) Second Flat Ring 1 = 32A Ring 2 = 32A x 0.4 (Diversity Factor) = 12.8A Lighting 1 = 2A (Assumed load with diversity applied) Lighting 2 = 2A (Assumed load with diversity applied) Total load on DNO = 97.6 Amps Obviously if you have other demanding loads such as showers or cookers then a new supply could be required. However it would probably be more economical for the existing supply to be utilised (owing to the cost of getting a new supply installed /existing upgraded to three phase) and any other requirements for water heating /cooking to come from non-electrical services (gas /oil). Edited: 28 October 2008 at 09:16 PM by Inrush 28 October 2008 09:29 PM spm Posts: 194 Joined: 23 October 2005 if the flats are to be registered seperatly ie address and have different water supplies or gas then two supplies would be needed, if not as said you could split the supply 28 October 2008 09:36 PM carlosreid Posts: 11 Joined: 14 July 2004 As i understand each flat will have its own water and gas supply, 1 32a ring 1 32a cooker 1 6a lighting 1 6a smoke alarm ------------------------- snoop 28 October 2008 10:22 PM spm Posts: 194 Joined: 23 October 2005 why not convince client to do electric as well then the properties could be sold seperatly at a later date , iam pretty sure you cant share the supply if other services are diff, due to possible faults but i couldbe wrong there will be someone on here who knows for sure and why,but it just seems like a halfway job not to do it all properly after all the cost of a new gas and water supply is often more than the elecric, good luck with it.
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