Ran into this yesterday.
10 unit apartment building, built in 1921 and converted (recently) to condos. The upgraded the electrical.
But the service drop from the local untility (Commonwealth Edison) was just plain silly.
Picture 1 shows the drop (coming down on the right, next to the pole). It has one size conductors. Each one of these were spliced (with electrical tape) to 2 smaller conductors and then spliced, again back to one larger SE conductor (larger than both the original and the spliced postions) that lead into the weatherhead.
Picture 2 is a closeup of the splices.
Isn’t it amasing what the local power companies can get away with. The code inspector said that Com Ed can do pretty much whatever they want.
BTW: The Com Ed conductors were aluminum. The SE conductor was copper.