Worked at a place that had a model/pattern making building and a fiberglass mold making building. About 80' apart. If the pattern shop used silicone...
If using 2” pvc conduit a 24” trencher is fine as you only need to go down about 20” (2” conduit + the 18” required depth). If direct burial then you...
If you run the wire yourself, dig the trench before buying the wire. Measure carefully, and get enough to have some to throw away, or you're sure to...