Sanwizard
Solar Wizard
- Joined
- Feb 2, 2021
- Messages
- 2,728
I have two LV6548's running everything fine. I have two Trane 3 ton HVAC in a 3000sq ft house. I used the Emporia monitoring solution on my 200amp service box for about 7 months, to see what the max pull was. Using soft start on the HVAC, they eac pull about 2500W on start, and 2kw while running, so both around 5KW. The LV6548's provide 13KW. When the HVAC is off, my steady state for everything in the house is about 800 watts (lights, TV's, settop boxes, heat, chargers, fridge, etc...) it hits up to 2K in short spikes when the microwave is on, etc. If you check out DMI inc's and DanF's youtube channels, you can see they are able to run everything fine. Dan uses two LV6548's, and DMI has 4. Even with 4 them for 26KW continuous, its less expensive than one Sol-Ark, and Sol-ark seems to have issues when one leg is above 4KW ( that may have changed, but I have not seen any new tests after David Poz did his)I just thought I'd post here to help make clarification on the actual outputs for the MPP LV6548. I had pinged MPP and asked them about the outputs (also if it is a HF or LF inverter and how they handle imbalanced loads, amongst other things) and they replied to me with the following:
"These are high-frequency inverter, and still with transformer built in.
As long as your AC load size will not exceed the size of inverter, it will work fine.
Inverter is designed in 6500w continuous power, surge power 13kW (withhold 5 second). And for 2 inverter stacked split-phase topology, it will be a 13kW inverter system / surge power 26kW
For working under a 120v, the support output AC current is 118.18A , or under 240v AC output , it is 54.16A .
We have many different model of inverter designed in similar way, unbalance power is confirmed not an issue."
So the point I'm putting here, is that a pair of these inverters could easily exceed what a 100a AC breaker panel could handle, I would honestly rather go with a 200a AC panel to support future stacking if I added 2 more inverters later (2x per leg), because 4 inverters would double the above amp values.
If you have not used the Emporia Energy app to monitor your house, I highly recommend it. Great little useful solution to find out what your consumption is, and who the consumers are.
Also check out DMI inc, as he is doing some very cool stuff with MPP solar and DIY batteries.