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You will want to get a soft starter on each of those AC units. One main reason I went with 4 Powerwalls was to make sure I can start my 2 AC units at the same time in the event of an outage. Even with the four Powerwalls, I decided to install a soft start on each of my AC units outside. Soft starters will dramatically reduce the in rush surge amperage when the compressor starts. My large unit has a rated LRA of 109 amps, but with the soft starter, it usually draws in the low 30's.


I have two of the X48 units.
you are absolutely right, it was the compressor start that was triggering the trip. i need to get these. Thank you.
 
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just got the power back early morning. Overall Powerwalls did great.
only issues faced:
- tripping when using ACs for long time
- Powerwall disconnected from wifi so didn't know much charge was there or what was the usage.

But nonetheless, they powered the house for 3.5 days day and night with no major issue. Entire reason to get Solar + Powerwall was events like this down here. Some folks had generators and they wouldn't work.
 
Tempting
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