iwire--exactly. If you put a typical weatherhead on a pipe running downwards, the head can fill up with water. And freeze in winter.

The code says when you 'use' a weatherhead the conductors have to come through separately bushed openings. If I don't use one then I don't need separatly bushed openings. Right?

By the way this is a two story building, with separate commercial tenants on the first floor and offices on the second floor. So the updated service for the second floor needed the weatherhead down lower for ComED connection. That's why it runs up.