LG ESS Home 8 Installation Manual page 140

Appendix
Total Ampacity of Home 8 and PV Inverter is > 200A (Partial Backup)
The Home 8 load center and PV load center require main breakers in their load centers. Also, another
dedicated circuit breaker for the 2 load centers is required and should be located between the SE Box
and the two load centers. The lug kit is only supported in the SE Box, not in this breaker.
1) The total ampacity of the breakers for the Home 8 should not exceed the ampacity of the main
breaker in the SE Box and the ampacity of the breaker in the "A" panel.
2) The total ampacity of the breakers for the PV should not exceed the ampacity of the main
breaker in the SE Box and the ampacity of the main breaker of the Home 8 load center for stable
backup operation and the ampacity of the breaker in the "A" panel.
3) The ampacity of the breaker in the "A" panel should not exceed the ampacity of the main breaker
in the SE Box.
4) The ampacity of the main breaker in the backup panel should not exceed the ampacity of the
main breaker in the SE Box.
5) With any of the above cases, the PV CT should not be located in the SE Box. Extended cables for
the PV CT may be required depending on the installation conditions.
6) In the event there is greater than 200A service capacity, the B panel should have two different
main breakers. One would be the dedicated circuit breaker for the SE Box and the other would be
the dedicated circuit breaker for the non-backup load. The energy meter integrated in the SE Box
supports 400A (2 x 200A CT) measurement. In this case, external CTs are required to measure
the non-backup load. (Do not remove the connector of the internal site net CTs.) The measured
value of external CTs are added to that of the internal CTs.
New or Existing Solar System
New or Existing Solar System
New or Existing Solar System
New or Existing Solar System
Home 8 Home 8
140
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PV
inverter
PV
inverter
PV
inverter
PV Sub-panel
with main breaker
PV
inverter
Home 8 Sub-panel
with main breaker
Home 8
Due to our policy of continuous product innovation, some specifications may change without notice.
A
PV CT
Sub-panel with
main breaker
(max 200A)
Home 8
AC Power DC Power Communication
Stop
Switch
B
Smart
Energy Box
External CT
Backup Panel
Backup Load
Non-backup
Panel