captainjackS Posted October 27, 2021 Share Posted October 27, 2021 (edited) bought a new 12000 BTU / 3.5Kw aircon for new installation. Walked through with a local installer to confirm routing between the indoor unit and outdoor unit. approximately 12m long with 3 bends. Looking for recommendation of the correct cable to use that will be routed along with the refrigerant tubes. Manufacturers documentation indicates that 4 x 2.5 mm sq conductors is suitable. But it doesnt specify whether it should be solid / stranded or jacketed in a particular material. Do people use NM / VKF / Romex cable for this purpose? Or something else specific for routing alongside refrigerant tubing? If I don't buy the "correct" cable, I have a feeling the installer will run 4 THW wires and use lots of tape. Installation is 80km outside Chiang Mai, and local electrical shops out there often don't have much inventory. I am in Chiang Mai city and familiar with many local suppliers, so I should be able to find it at one of the bigger electrical supply shops. Just need a more specific part name / number. Not too sensitive to cost on this one. The routing will make this installation difficult to fix later, so i prefer to buy "the best" once and not have to fix it later. Any recommendations will be greatly appreciated. Edited October 27, 2021 by captainjackS Link to comment Share on other sites More sharing options...
Crossy Posted October 27, 2021 Share Posted October 27, 2021 I'd use VCT, run it in the trunking with the pipes. https://www.lazada.co.th/products/pks-vct-4x15-vct-4x25-20-i2861128502-s10436703739.html? 20m for just over 1,100 Baht. 1 Link to comment Share on other sites More sharing options...
captainjackS Posted November 2, 2021 Author Share Posted November 2, 2021 (edited) Thanks @Crossyfor the rec. Found VCT 4 x 2.5mm at local shops for 38฿/m and 70 ฿/m depending on brand . After chatting with the guy at the air conditioning supply shop (chiang mai cooling), I decided I want 5 conductors instead of 4 just in case I need 1 more wire in the future for a different A/C unit or whatever. My preferred electrical shop (saha faifa) didn't have 5 x 2.5 VCT, so I got 5 x 2.5 CVV cable whose construction looks and feels much better than the VCT with only slight reduction in flexibility for 70 ฿/m. For what it's worth, the big-box retailer where I bought the A/C system quoted me 600 ฿ / m for the complete set of copper tubes, wiring, and trunking. 15m run would be 9000฿. I bought all of the supplies myself from local suppliers in CM for 5000฿. Cost me a bit of time, but worthwhile experience Edited November 2, 2021 by captainjackS 1 Link to comment Share on other sites More sharing options...
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