In case you missed it, here's a link to an interview I had with James Showalter, EG4 Founder and Owner, and Markus Jackson, Director of Product Management, as we talked all about the EG4 GridBOSS and FlexBOSS21!
https://youtube.com/live/OSfZI-c3Zyg?feature=share
Thank you for the invite and to everyone who joined Adam De Lay's livestream on the GridBOSS and FlexBOSS21!
We saw a few unanswered questions in the comments during the stream, so our support technician, Eric, reviewed them and provided detailed responses.
@jared That's awesome! Thanks Jared and Eric!
Next, do you need the GridBoss to accomplish this? Do you still need 2 inverters (one for each type of batteries) to accomplish handling 2 different batteries? Even with the GridBoss?
Can they be different inverters
I.E. With an 18kPV AND a FlexBoss21? Or do I need 2- 18kPV's?
Posted by: @tou47Can the FlexBoss21 handle BOTH (2-3) PowerPros (outdoor) AND 6 LifePower4's (V1's) at the same time? Without the GridBoss?
This is possible, but it’s important to parallel them to an external bus, ensuring the Ah capacity of each bank is closely matched. For example, you would use 1 Wallmount for every 3 Lifepower4 V1 server rack batteries. However, since these two cannot communicate directly through their BMS, you would need to operate them in open-loop mode if they are part of the same system. I would also note that since the aH capacity does not match 1 for 1, additional maintenance of cell balancing would occur.
Posted by: @tou47Can they be different inverters
I.E. With an 18kPV AND a FlexBoss21? Or do I need 2- 18kPV's?
This video has additional information with mixing inverters with the GridBOSS.
UL listed and local or national electric code requirements?
I'm looking to install this in a new house build and wondering if this is UL listed (I suspect it is) but more importantly what are people finding about outisde service disconnect switches being required between the meter and the GridBoss?
GridBoss:
UL1741, UL67, UL869A*
FCC PART 15, CLASS B (PENDING)
FlexBoss:
UL1741, SA, SB, PCS CRD
California Rule 21 Phase I, II, III
Arc-Fault Circuit Interrupter (AFCI) NEC 2020:690.11/UL1699B
Ground Fault Monitoring (GFDI) NEC 2020:690.41(B)
CSA 22.2.107.1:2016 Ed. 4 CSA 22.2.330:2017 Ed. 1
IEEE 1547.1:2020; IEEE 1547:2018
Hawaii Rule 14H [HECO SRD IEEE 1547.1-2020 Ed. 2]
Rapid Shutdown (RSD) NEC 2020:690.12
FCC Part 15, Class B (PENDING)
How does the GridBOSS handle the generator input? Does it detect the voltage on the gen input and cut off the grid power? (to replicate a hard lockout of the service panel?)