I switched to charging from 120V when at home... Just barely enough time to get me recharged nightly.
When I charged on the blink at 240V, I would hear buzzing start to come out of my solar panel inverter.
A short while later, the solar inverter failed. I doubt I could get Nissan to pay for that.
(A lot of finger pointing could happen including - "we don't output any noise that the other device should find harmful.")
So, rather than risk possibly causing another inverter failure, I will just use 120V charging at home.
I still use public 208V/240V EVSEs occasionally, and hope I am not damaging any equipment on the other side of the EVSE.
I think I may have heard some buzzing coming from transformer closets at public garages when charging there, but apparently it is not supposed to be harmful, so I am trying not to worry about it.
If Nissan comes forward and says there is a problem that needs to be fixed, and I can get my charger replaced as a routine service, then I will gladly get it done. But if I have to mount a fight to convince them to change it, I am not inclined to put in all the time. I try to workaround the shortcomings of the vehicle, including the limited range, slow charging, and sometimes 'noisy' charging.