Get a tester too.I was literally researching that as you posted.. I am looking at an AC powered unit. One member suggested 7000 volts/ 1 joule but my entire area is 160 sq ft (8Ă—20) so by adding 1 foot perimeter out from run/coop as a no-man's land, that adds to 189 sq ft . Think I can get away with 6000v/0.10j. Mind you, this all based on my quick internet tutorial on electrical principles 101. Thankfully DH is an electrician; he'll be sure to make sure I don't fry chickens before their time.
I read your bacon tip before..good idea.
Here's another good tutorial:
https://www.backyardchickens.com/articles/a-treatise-on-electric-fences-for-poultry.72229/