enphase ENV-S-WM230 Installation And Operation Manual page 15

Install the CT(s) for Production Metering
Install one split-core CT for each monitored phase to provide production metering. For single-phase,
connect only L1. For three-phase, connect L1, L2 and L3.
DANGER! Risk of electrocution! CTs must be installed with no current flowing in the sensed
circuit. Always install CT wires in the terminal blocks before energising the sensed circuit.
DANGER! Risk of electric shock. Be aware that installation of this equipment includes risk
of electric shock. If you wire the Envoy-S at the sub-board, always de-energise the sub-board
before beginning wiring.
a. Locate the arrow on the CT label.
b. Take care to identify L1, L2 and L3 at the main feed to aid in corresponding L1 - L3 at the Envoy-S
voltage terminals (and I1 - I3 for the production CTs).
a. Connect the white wire from Line 1 to "I1•" and the blue wire to "I1".
b. Connect the white wire from Line 2 to "I2•" and the blue wire to "I2".
c. Connect the white wire from Line 3 to "I3•" and the blue wire to "I3".
d. Open and clamp each CT on the active lines (Line 1, Line 2, and Line 3, if used) of the solar
production circuit with the arrows pointing toward the load (away from the solar array).
e. Tighten all connections to 0.56 Nm.
Install the CT for Consumption Metering (optional)
Install one split-core CT for each monitored phase to provide consumption metering. For single-phase,
connect only L1. For three-phase, connect L1, L2 and L3.
DANGER! Risk of electric shock. Always de-energise circuits before wiring power and CTs.
DANGER! Risk of electric shock. Installation of this equipment includes risk of electric
shock. If you wire the Envoy-S at the sub-board, always de-energise the sub-board before
beginning wiring. If it cannot be de-energised, a qualified electrician may safely install the CT
as directed, making sure to connect the leads and then place the CT around the wire and
latch.
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Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01