When running wire short distances with few bends such as between boxes 2 and 3 and 3 and 4 you can simply tape the two wire ends together and push them through the conduit photo 13.
Running conduit through concrete walls.
The size of conduit that is needed will be depend on the number and size of the electrical wires being run through it based on tables c9 and c10 of the national electrical code.
Use a drill bit that will accommodate the size of the schedule 40 pvc conduit you choose to use as well as one that will drill through the material of your wall.
This allows you to install the conduit under the slab in a location where it is well protected.
How to run a pipe through a concrete block wall.
There is an outlet inside the house on the same wall where you could drill straight through and tap into that outlet to run your outdoor outlet and then from there you could go.
Pvc conduit is typically used for these applications because it is weather tight and doesn t corrode due to exposure to the acidic concrete.
The best time to run conduit is before your pour the concrete slab.
For longer distances or runs that have two or more bends run a fish tape through the conduit and tape the wires to it photo 14 and detail photo.