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Intellimeter Canada Inc.
1125 Squires Beach Road, Pickering, ON, L1W 3T9 • Tel: (905) 839-9199
Copyright 2019 © i-meter 45 Manual
2.3.
i-meter®45 Current Transformers (CT) Interface Board
Referring to the installation drawings, mount the module, complete with mounting brackets,
to the back frame rail.
The CT rails are to be permanently fastened to the interior panel rails in their designated
position; this serves for spacing and support for the CTs.
Dress in the CT wire back to the metering modules to protect it from damage during feeder
and branch circuit installations.
Any CT that is not connected to the proper metering module will give incorrect readings.
All CT wire connectors and terminal position on the meter module are identified. Polarity of CT
is VERY important- white is positive, black is negative- note arrow for load/line direction.
Typically, the CT leads do not need to be removed from the meter module. If required, connect
the CT wire connector to the identified terminal on the correct meter module. There may be
several modules within a panel board, confirm the meter number on the CT connector label.
Install the voltage connectors to the meter modules and dress the wires so they are protected
from damage during feeder and branch circuit installation.
Terminate the voltage reference chain to the designated 15Amp breaker and ensure the
proper phasing retained as per drawings.
Install the communication cables to the meter modules and dress the wires so they are
protected from damage during feeder and branch circuit installation.
Communication cable is designed to be terminated to a junction box outside of the panel
board by the electrical contractor.
The 12 CT rail can replace the requirement for the CT interface box in certain situations. The CTs
must be mounted on a rail and the loads should be 100A or 200A. If there are any 400A or 600A
loads, the CT interface box must still be used.