14. Electrical boxes should not be closer than 12" to the dirt. Ever. No matter what the code allows. When you put electrical boxes in the dirt, or even that close to the dirt, they WILL get wet and dirty. Probably not while there is still a warranty on the work, but soon after. Every SINGLE 'sealed' commercial pool light junction box I've ever opened was full of water. In fact, "sealed" electrical boxes seem to be much better at keeping water in, than at keeping it out.


I'm an electrician for 24 years and have never seen a dry pipe in the ground ever. They will have water in them from plain old condensation.