[Elecraft] how much to stretch copper wire

[Bill]

Short runs - that being under 65 feet - I make with stranded #12 using a 
PE UV-safe insulation. I used to use all kinds of the flavor of the week 
of proper antenna wire. I have never had a 75 meter dipole using any 
kind of #12 wire break from a weather induced load (ice/snow). I do not 
use anything less than #12 on antennas.

If there is any stretch, I have not seen it - but, I also have an 
antenna tuner. So, I might have never noticed.

My current primary NVIS for 75 has been in the air for nearly 20 years. 
This summer it will be replaced with all new everything.

Bill W2BLC