PV Meter Requirment (AHJ) with the SolarEdge BUI

[Xamacho]

This is a project in San Antonio, Texas with CPS Energy being the AHJ and PoCo.

Quick fact - They (CPS Energy) require one, and only one, PV meter per revenue grade meter. My dilemma arrives while trying to incorporate this requirement while attempting to design a solar/battery system using the SolarEdge Backup Interface (BUI). The BUI specsheet I have stats, the BUI can accept up to three 40 amp breakers (aka 7.6kW inverters/power hubs).

However, I believe their new 11.4 kW Inverters can also attach to the BUI, and I swore someone stated only two are possible?!? The 11.4kw have a 47.5 A continuous output (60A OCPD), so perhaps three are possible to attach to the BUI, IF the bus rating of the BUI is 200 amp as it stats it is.

My ultimate question to the community are:
(1) Does anyone have the knowledge that the BUI can accept more than 40 amp breakers (I believe Eaton is their breaker of choice)? If so, is it possible to go up to 60amp/11.4kW inverter situation. Or even bigger, can this BUI accept a 120 Amp Eaton Breaker? This 120 Amp question leads to...
(2) I want to land the Inverter Output Circuits to an aggregation panel, then land into BUI with a double pole 120 amp Eaton Breaker. I have already posed this to SolarEdge (yesterday), but figured this forum might resolve my problem quicker.

I already know that moving to an Enphase solution will solve the CPS requirement of only one PV meter (via the PV aggregation panel) - but thought I would ask to see about a SolarEdge solution.

Thanks and I look forward to your help and expertise.

 

[ggunn]

This is a project in San Antonio, Texas with CPS Energy being the AHJ and PoCo.

You have my deepest sympathy.

 

[BillK-AZ]

The BI-NUSGN-01_Backup_Interface-3L I recently installed used a ChiNT brand 40A breaker. These are available in 1 to 63A models ( 40, 50, 63, no 60). However, the version sold in the USA (M63 NB1 P1 C63 by US Breaker, etc.) is marked Line/Load with load on the bottom. In the BI-NUSGN the inverters connect to the bottom. The photo I have of a wired BI-NUSGN does not show any 'Load' marking in the position like an actual 10A 2-pole version I have. SolarEdge may be sourcing a special version of the 40A that is not marked Line/Load. I believe that the Load side of a marked CB should not be connected to an inverter.

 

[Xamacho]

Thank You BillK and GGunn - I think ultimately with the constraints of a single PV meter requirement - we (me the PE firm, and the NABCEP installer) will have to design for and migrate to an Enphase system.