AV services on same phase without motors being allowed on that phase

[mwagner]

I did a little research and saw the post "TV equipment: AV circuits on same phase" but I think this takes it a bit further. The note we have on our AV construction drawings say:

Power for all AV services in each designated space shall be on the same electrical phase, and this phase shall not include motors, appliances, or any other source that can cause signal interference.

This is a large building (4000A service) with many panels with different percentages dedicated to AV. I don't think the electrical drawing actually put all the AV circuits on a single phase, but even further, there are very large 3-phase motors. How can those be reconciled with this note? Has anyone had any similar experiences since that 2011 post?

 

[infinity]

Obviously if there are any 3Ø motors in the building the note is useless. We have used a transformer and a dedicated panel for only AV power without any other loads. That's about as close as you're going to get.