Example: could I take 4 pyramid deck blocks and cover with 2×12 pressure treated on edge, pour gravel in that and cover with 2×12, this then would be a solid platform for mounting the outlet. Alternately 6×6's tied together. Harder to work with 6×6 as stores can't cut.
This is because I can't dig down in this area due to soil compaction and multiple utility lines underneath.
314.23 Supports.
(B) Structural Mounting. An enclosure supported from a structural member of a building or from grade shall be rigidly supported either directly or by using a metal, polymeric, or wood brace.
(2) Braces. Metal braces shall be protected against corrosion and formed from metal that is not less than 0.51 mm (0.020 in.) thick uncoated. Wood braces shall have a cross section not less than nominal 25 mm × 50 mm (1 in. × 2 in.). Wood braces in wet locations shall be treated for the conditions. Polymeric braces shall be identified as being suitable for the use.
What NEC requirements apply to installing receptacle next to a tree?
Best Answer
Where I could not go deep enough I ran rigid ~5” below the surface then used a 5 gallon bucket brought up the pipe from the bottom to a bell box went back out to the next one. I filled the bucket with concrete. That gives more than 1 cu ft of concrete and was allowed by my AHJ. The bell box’s I used had 3 openings 2 on the bottom for in and out and one on top for a light, every other one I put a receptacle on the box. I cut the bottom out of the bucket but did press the bucket into the gravel I had there. If I do it again I would put the top of the plastic bucket down in the gravel not the bottom of the bucket as they are slightly tapered and getting the bucket off was a pain with the taper going the right way it would have been much easier but if you have a few extra 5 gallon buckets this was allowed in my jurisdiction as sufficient I think 1 cu ft of concrete was the minimum.