To run the wire to the exterior disconnect, the contractor drilled a hole through the block wall. He drilled from the outside, so the interior hole blew out and is roughly 4" in diameter, at least on the surface of the block.
On the exterior of the house, he ran the wire through the back of the disconnect box and attached the box over the hole.
Inside the house, he packed concrete around the wire to seal up the roughly 4" "hole". So basically, you've got a piece of yellow 12 gauge Romex coming out of a patch of concrete.
He may have packed concrete around the wire on the exterior also...I can't see behind the box.
Is this OK or should the wire have been fed through a pipe or sleeve?