ECN Forum Forums General Topics of the Trade General Discussion Area romex, used on a solid block wall ?

Two questions,
Has anyone talked to a mason about "blowing out that many blocks????

second;
I know about the 1 1/4inch rule or a 16gauge nailing strip. But is there anything on the thickness of the wall cavity????

I always ran my runs verticaly into the ceilings and puchased a 2inch piece of 16gauge steel and ran it up th furring strip all the way to the cieling.