Key points in this article
Beyond the checkbox
Acceptance often stops at reading the rating label. That misses the point. The grade is a promise about dust and water resistance, and the promise only holds if the seams were built correctly. Test the seam, not the label on the box.
What to actually inspect
Check where the charger meets the wall, conduit, and connector. Look for gaps, uncured seals, and forced fits. The front line shows most failures appear at the boundary, not on the rated surface itself where everyone looks first.
Verify in real conditions
Re-check after the first heavy rain or dust storm. Keep the area ventilated, dry, and free of water. Save usage records so any ingress can be traced. Stop and report on any anomaly found during the careful re-check of the site. When acceptance must test the seam and rate is a promise, not proof are treated as normal practice, far fewer surprises reach the service team later. In practice, keeping acceptance must test the seam and rate is a promise, not proof front of mind turns a one-off fix into a lasting routine.