Unincorporated Pierce County, Washington State, USA.
We're covered under Washington State L&I for electrical inspections and I've been digging around their site but have failed to come up with an answer. This is honestly probably a stupid question but I'm going to ask it anyway.
We're building a detached shop/ADU and laying 2 inch conduit from our main structure out to the new building and bedding it in about 5" of sand. We need to have a ditch inspection before we backfill. However what I cant seem to find is, do we actually need to have wire in the conduit, or can it be empty for the inspection.
Reason being, we're not ready to make the full run yet, but need to backfill our trench as its blocking access to the worksite. Essentially I want to leave the conduit stubbed out above ground level next to the main house and complete that section later. Plus pulling 2/0 2/0 2/0 AL and #6 ground that entire distance sounds like a major PITA. It would be nice to pull from the new structure to where it comes out of the ground, and then finish the pull from that point.
Since I'm on the topic of conduit and this feeder, maybe someone can tag a separate answer on. From where the new feeder comes out of the ground, we're going to run it up the side of the house and into our attic using a conduit body to make the 90* turn in. Coming out of our main panel the previous builder put 2 inch conduit up into our attic for us for future use. From where the old conduit ends, to where the new conduit enters the house, I was planning on leaving the wires exposed in the attic, would this be acceptable, and if so, what method of stapling would you use? None of the staples I've seen allow for wire up to 2/0 in size.