Was there yesterday for same problem. Happen to pass the facility electrical engineer in hall way. Was able to compare my work orders records to his records of voltage dips/brown out of the building. Every time they occured matched up with every call I got. So it was correct that it was a power issue. My point of contact was being told there was no power issue. Building is looking into what they can do to solve their power issue.

On a side note today I started the 5th packing job on these inverted twin post units.