Just a question, did this job have mechanical prints?

Did you look at them before you ran your rack?

In general if the mechanical prints show unit heaters and duct work in a certain location and you go and put stuff in the way it will be your own fault for not paying attention to the other trades.

Now if your on a job that does not have detailed prints that is a whole other story. [Linked Image]

Bob Badger
Construction & Maintenance Electrician
Massachusetts