EP550 pro Split Phase 15 amp limit

When using 2 EP500 pros in split phase and charging both at the same time from wall with the AC Charging Cable for Split Phase do I need to change the Max. Grid Input Current (preset to 15 A) in both units? It is my understanding that the NEMA L14-30 wall plug is 30 A. I am not an electrician just the owner of the units.

You can leave it unchanged. Setting 15A will input 15A for each machine.
This code is used to change the current, so it should be clear that you must make sure your grid corresponds to this specification. Otherwise, it may cause a safety hazard. BLUETTI will not be responsible for it. The password is 159873. Please pay attention to electricity safety.