Routing Underground Electrical Feeders in a Zone with Seismic Activity

[Shujinko]

I preface this post by saying that I do not have any experience with electrical designs or installations in sesimic areas of the country. I have a project in Washington State. I am looking to route most of the larger electrical feeders underground, under the building's ground floor slab. Are there any special considerations I should take in a seismic zone for this feeder routing? Is this a good idea? Should I consider routing these in the ground floor ceiling in-lieu of under the ground floor slab?

 

[BarryO]

Where in Washington? Once you get away from the Olympic Peninsula and the Puget Sound area, the risk drops off, especially East of the Cascade Range.

Geologic Hazard Maps | WA - DNR

The Washington Geological Survey develops, produces, and publishes a large variety of maps and reports on the hazards faced by our state. This page contains a collection of these resources and a brief description of each item. Detailed information can be found in the map or report. All of the...

www.dnr.wa.gov