I want to run a conduit under my front yard about 20 feet. I will be trenching to 18 inches deep, but was curious what the easiest conduit is to install that meets code? PVC? EMT? Liquidtight?
PVC is probably the easiest, and cheapest. Just remember to glue your joints, and install expansion fittings where appropriate.
Rigid nonmetallic approved for direct burial (at 18" PVC is the easiest and cheapest way to go)