Jim Lux wrote in
:

....
III Amateur Transmitting and Receiving Stations - Antenna Systems
less than 45 m over 45 m
Hard drawn copper AWG 14 AWG 10
CCS, bronze, etc. AWG 14 AWG 12

Examples 7 and 8 in the catenary calculator at
http://vk1od.net/calc/awcc/awcc.htm use #14 and #10 HDC. Readers can
explore the survivability of wind and ice with the calculator.

If I model a 45m simple span of #14 HDC at the lowest wind speeds
applicable to the design of structures in this jurisdiction, using the
mandated safety factor, the minimum sag is about 5% of span, about as
large as it typically practical for such a span.

NFPA 70 does not apply in VK, though there are standards that apply and
the answer comes up pretty much the same, just there is more freedom in
engineering shorter spans.

Owen