enphase IQ Combiner 4 Quick Install Manual page 4

NOTE: It is important to match CT and sense voltage phases.
To properly measure power and energy, CT inputs must align with the
respective voltage inputs. Consistently identify and match the two AC
lines at two points: the main load center feed and the IQ Gateway. Wire
colors (typically black and red) may not always consistently
identify Lines 1 and 2. If in doubt, use a multimeter to check.
Figure C: Connection of split-type Consumption CTs
Load Center
From IQ Combiner
Consumption CTs
The arrows must point
toward the load — away
from the grid.
To Grid
Figure D: Connection of clamp-type Consumption CTs
Load Center
From IQ Combiner
Consumption CTs
The arrows must point
toward the load — away
from the grid.
To Grid
Energize and Update the IQ Gateway
7
A ) Re-install the plastic dead front with the LTE-M1 cell modem
installed on the dead front. Do not completely tighten all of the
screws.
B ) After all screws are partially tightened, go back and tighten each one
completely.
C) Plug in cell modem USB cable into an IQ Gateway USB port
4
IQ Gateway Terminal Block
CU, 75C, 14AWG MIN
MEAS CAT III
OVC III
L1 L2
N
IQ Gateway Terminal Block
CU, 75C, 14AWG MIN
MEAS CAT III
OVC III
N L1 L2
D ) Turn OFF the DG breaker(s).
E ) Reinstall the IQ Combiner 4C door.
F ) Turn on the circuit feeding the combiner.
G ) Log into the Enphase Installer App on your mobile device and down-
load the latest version of IQ Gateway software. To do so, go to the
Settings tab in the Enphase Installer App and select Download Now
under IQ Gateway Software.
DANGER! Risk of electric shock. Always de-energize the
load center before beginning wiring.
DANGER! Risk of electrocution! Do not install CTs when cur-
rent is flowing in the sensed circuit. Always install CT wires
in the terminal blocks before energizing the sensed circuit.
Production | Consumption
P1 C1 C2
Not used
Production | Consumption
P1 C1 C2
Not used
PD, B300
OVC II
Digital Input Relay
NO
1 2 3 4
Ref Common C
Relay contacts
(if needed)
PD, B300
OVC II
Digital Input Relay
NO
1 2 3 4
Ref Common C
Relay contacts
(if needed)