I have a terraced backyard with 3 retaining walls, each about 4' high. One is poured concrete, the other two are wood (PT 3x12). I am looking to add some outlets to the backyard from an existing receptacle on the back of the house. This will be one circuit with 3 individual thwn-2 12 AWG wires: hot, neutral, ground.
I'd like to bury 3/4" pvc conduit, pop out in front of the retaining wall and then go into the next terrace by going through the wall instead of over the top and back down. The hole I drill in the wall would be at least 1". I'm choosing 3/4" conduit in case I ever want to add a 2nd circuit, or cat-6 ethernet cable, in the future.
Any issues with my approach?
Mild calif winters here, no snow or frost concerns.