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SWA in U/F floor slab

Got a job where a new submain - approx 25 metre run in 16mm 3 core SWA. Embedded directly into a new concrete floor where wet U/F heating will be installed. Am trying to work out the best order of installation - that is, should the cable go in first, then the insulation, followed by the U/F pipework,and finally followed by the slab. Am not sure what order the u/f heating side will be installed and am also thinking about how if any correction factors may need to be applied for the current carrying capacity. I have sized the cable with a little overhead in mind in terms of actual final demand, but am still a little concerned about final slab operating temperature

Comments welcome.

PS - Am not liking this new format - it is like writing inside a letterbox when compiling posts!
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  • I'm going back this afternoon to take more more precise measurement of the cable run, but am thinking that only around 15 metres of the run will actually be under the slab, and the run abuts the wall on one side..

    I don't know how close the pipes will be run but am guessing there will be a significant gap between the bottom of the wall and the 1st run of heating pipe.

    Best to go under everything else then.
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  • I'm going back this afternoon to take more more precise measurement of the cable run, but am thinking that only around 15 metres of the run will actually be under the slab, and the run abuts the wall on one side..

    I don't know how close the pipes will be run but am guessing there will be a significant gap between the bottom of the wall and the 1st run of heating pipe.

    Best to go under everything else then.
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