Here in scotland where it rains all the time and is excessively wet, that installation should only ever enter the boxes from the bottom; don't puncture the roof of the boxes, by having all entries from the bottom, water can't drip down on to the switch gear and instead can only come "up" and drip back out at the bottom of the boxes... so the worst possible is just a humid box, whereas that installation risks water dripping in from above as it gets around the seals on your top-entries which could cause long term problems as your sealant breaks down in the thermal expansion life cycle. That's why you'll never observe an outdoor box with top entries in a professional installation.
Having lived in Europe, I understand that there are differences in procedures. While what you describe makes much sense, this is the "standard" way on this side of the pond. As such, it might have been kinder to add the term: " in this country" at the end of the last sentence.
Thanks for all the details! How many years will the lumber post last (UV / moisture / wind)?
Here in scotland where it rains all the time and is excessively wet, that installation should only ever enter the boxes from the bottom; don't puncture the roof of the boxes, by having all entries from the bottom, water can't drip down on to the switch gear and instead can only come "up" and drip back out at the bottom of the boxes... so the worst possible is just a humid box, whereas that installation risks water dripping in from above as it gets around the seals on your top-entries which could cause long term problems as your sealant breaks down in the thermal expansion life cycle. That's why you'll never observe an outdoor box with top entries in a professional installation.
Having lived in Europe, I understand that there are differences in procedures. While what you describe makes much sense, this is the "standard" way on this side of the pond. As such, it might have been kinder to add the term: " in this country" at the end of the last sentence.
GOOD JOB