System use cases for IQ8 Microinverters

Page 7
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and other names are trademarks of Enphase Energy, Inc. Data subject to change.
IQ8SUC-TB-0006-01-EN-US-2021-11-05
COMPONENT TYPE PRODUCT NAME AND MODEL NUMBER
SOLAR
ONLY
SUNLIGHT
BACKUP
HOME ESSENTIALS
BACKUP
FULL ENERGY
INDEPENDENCE
Main breaker and/or load breaker
for IQ System Controller 2
IQ System Controller main breakers
BRK-200A-2P-240V (Eaton SKU: CSR2200N)
BRK-175A-2P-240V (Eaton SKU: CSR2175N)
BRK-150A-2P-240V (Eaton SKU: CSR2150N)
BRK-125A-2P-240V (Eaton SKU: CSR2125N)
BRK-100A-2P-240V (Eaton SKU: CSR2100)
0 0, 1, or 2 0, 1, or 2 0, 1, or 2
Circuit breakers for IQ8 PV, IQ
Battery, and generator circuits
in IQ System Controller 2
IQ System Controller 2 circuit breakers
BRK-20A-2P-240V-B (Eaton SKU: BR220B)
BRK-30A-2P-240V (Eaton SKU: BR230B)
BRK-40A-2P-240V (Eaton SKU: BR240B)
BRK-60A-2P-240V (Eaton SKU: BR260)
BRK-80A-2P-240V (Eaton SKU: BR280)
0
1 or 2
(For PV and
generator)
2 or 3
(For PV, batteries,
and generator)
2 or 3
(For PV, batteries,
and generator)
Circuit breakers for PV
in IQ Combiner 4/4C
IQ Combiner 4/4C circuit breakers
2
BRK-20A-2P-240V-B (Eaton SKU: BR220B)
BRK-15A-2P-240V-B (Eaton SKU: BR215B)
1, 2, 3, or 4 1, 2, 3, or 4 1, 2, 3, or 4 1, 2, 3, or 4
Hold down kit for IQ
Combiner 4/4C
X-IQ-NA-HD-125A
3
Eaton SKU: BREQS125
0 1 or 2 1 or 2 1 or 2
Hold down kit for
IQSystem Controller 2
EP200G-NA-HD-200A
Eaton SKU: BRHDK125
0 1 2 2
O-the-shelf panel For essential loads backup No
Yes (Up to four
essential loads)
Yes No
PV modules Any
As needed per
system design
As needed per
system design
As needed per
system design
As needed per
system design
2) Enphase recommends using breakers compatible with hold down kits in IQ Combiner 4/4C for IQ8 solar only use case to enable an easy upgrade to a backup use
case when the homeowner decides to add backup. However if breakers that support hold down kits are not available then BR220 or BR215 breakers can be used in a IQ
Combiner 4/4C for solar Only Use Case. All other use cases require breakers that support hold down kits to comply with 2017 NEC 710.15 (E) or 2020 NEC 710.15(F).
3)X-IQ-NA-HD-125A supports up to 2 PV branch circuits per hold down kit while Eaton BREQS125 supports only one branch circuit per hold down kit.