Merci,Yep. Two questions:
[1] Two questions: Where would I find one? Often the key to finding something is knowing the right words ... "Thingy" doesn't usually search well!
Not very many big box store will have this item in stock but electrique supply centre will have it with serveral rod lengths which it can poke thru the stucture member { make sure you have good stucture member there otherwise you may need a 4X4X 1/8 or 1/4 inch steel plate with centre hole bored out}
If you have 2X4 good structure then I will suggest to " sister " up aka double up to make it stronger. otherwise the other option is use the angle iron and it will cover few 2X4 to spread out the tenstion. { this is my refered choice when you have pretty long drop or awkard angle }
[2] It seems to me that I should put it diagonal through a board backing up the sheathing so as to point toward the pole (somewhat), so that it is not being pulled at an angle. Yet I don't imagine pros do this... what would a pro do who wanted to "do it right"?
Naw most case I use the correct holder and properly attached as I explain above and how far is the pole to the house some case the length may change the way it will attached.
Oh yeah ., Just don't attached on the sheet of plywood or plankboard they will come off pretty fast once the strong wind storm or ice coated the service drop.
Thanks.