LK, What do you see as a safety issue? The equipment is permanently mounted. The mounting base is complete, it is a steel bracket permanently fastened to the structure. This not a "stunt", it is an engineer approved mounting system. Would you suggest a service be de-energized when masonry is repointed? Same situation. I would like to see PoCo installation specs that prohibit this installation.
What I see is, ongoing construction near an energized unprotected riser, and meter socket, I see the potential for a serious accident. I agree, with putting the supports in before the brick, but not the service riser, and metering equipment, until the building is complete.