What wire size I have to chose for my antenna?

We provide two sizes for our EFHW antenna models, the 18 AWG, and 14AWG  size wires. The 18ga wire is very stealthy and has a tensile strength of 85 lb (42kg) so you have to make sure that installation involving moving trees has enough sag and not too much counterweight if pulley system is used.

 The 14ga wire is much stronger but also heavier and can accumulate more snow or ice. According to the QST article about wire size at this link https://myantennas.com/wp/qst-may-2015-wire-size/  the wire strength really depends mostly on installation and sag amount you are going to leave on the wire.