jfb Posted June 18, 2018 Posted June 18, 2018 Quick question - will a 25mm2 SWA cable pull through a 50/63mm twin wall duct (assuming no outrageous bends) with relative ease? What diameter is a 25mm2 SWA cable? And as a sub note anyone know why I couldn't post this in the electric section (only certain options are not greyed out)?
Jeremy Harris Posted June 18, 2018 Posted June 18, 2018 (edited) 15 minutes ago, jfb said: Quick question - will a 25mm2 SWA cable pull through a 50/63mm twin wall duct (assuming no outrageous bends) with relative ease? What diameter is a 25mm2 SWA cable? And as a sub note anyone know why I couldn't post this in the electric section (only certain options are not greyed out)? Yes, no problem at all. I pulled about 20m or so of 3 core 25mm² SWA through a 50mm duct, including a reasonably tight bend where it came up through the slab. Not sure why some topic areas are greyed out - I'll have a look and see if I can see if there's a problem. I've just looked and cant see a problem. Which sub-section were you trying to access, Power Circuits? Edited June 18, 2018 by JSHarris Added question
PeterW Posted June 18, 2018 Posted June 18, 2018 @jfb I’ve moved the query - if it looks greyed out it means it’s a heading and there is a black drop down arrow next to it that will show the sub categories below.
jfb Posted June 18, 2018 Author Posted June 18, 2018 thanks -got it now. it was the multiple drop down arrows that confused me
MikeSharp01 Posted June 18, 2018 Posted June 18, 2018 (edited) 3 hours ago, jfb said: 5mm2 SWA cable pull through a 50/63mm twin wall duct How much power are you expecting to draw and how long is the run? PS 25mm2 is 25mm diameter. Edited June 18, 2018 by MikeSharp01
jfb Posted June 19, 2018 Author Posted June 19, 2018 Its a small 2 bed barn conversion and a smaller office/spare bedroom barn. 2 bed barn is 40m from 3 phase board. Smaller outbuilding is another 15m on from that. 2 bed barn: 5kw ASHP, induction cooker (unspecified yet), sockets, lights Outbuilding: sockets. lights, electric heater and ideally with potential for 7.5kw shower down the road All well insulated, airtight.
PeterW Posted June 19, 2018 Posted June 19, 2018 Why not run two if you have a 3P board..? 60A to the first unit with 10mm2 would be fine, then take another feed to the second unit in 10mm2 again, assuming it’s only a 50A load Quicker cheaper and easier and means both can run independently
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