If the service head is above the roof there is a 8' (18" in certain cases) minimum clearance to the roof, but that is only if the service head is above the roof. In the case in the photograph there is a requirement that the service head be above the point of attachment of the service conductors (which seems to be the case in the photograph) There is an exception to the above-the-point-of -attachment rule if it is (a) impractical to do so and (b) if the point of attachment is within 24" of the service head.

As Jerry pointed out, you still need the 10' clearance to ground.

- BOB