You could cover your PEX with a continuous layer of a good conductive material like copper mesh or copper (bronze) screen.? But be sure to introduce the break at the top of the loop.? I believe PEX is nonconductive.? With the screen or mesh, it should act much like using a copper tube.
Dave - W?LEV
On Tue, Feb 11, 2025 at 7:41?PM Martin - Southwest UK via <martin_ehrenfried=[email protected]> wrote: