Building Standoff from Overhead Electrical Lines

[wcl77]

This is also posted in the Structural Engineering/Other Topics forum:

What is the required standoff distance (horizontal and vertical) between a new occupied warehouse/shop building and an overhead electrical transmission line? The two lines I have running overhead are 138kVa and 69kVa. I am working in a tight spot and need to decide if we should reroute the transmission lines.

 

[MJJBEE]

Ask the Utility that owns the lines. Depending on where you are building they may have an easement ect. also the answer for what ofset is required is in the NESC if you have acess to a copy of that assuming you are in North Ammerica