Revision 3.0
MINI METER OR EE MODULE OUTDOOR INSTALLATION GUIDE
Integrated Metering Systems, Inc.
14
3.6 Installation Instructions
3.6 Installation of Voltage Lines
Check to make sure service is disconnected before any connections are
made.
1.
Field wired voltage connections are made to the Mini Meter terminal block. The rated
torque for these terminal blocks is 4.4 in-lb, and can be used with solid and stranded
copper wires, at 12-18 AWG.
2.
Verify that branch circuit fuse specifications meet local electric codes. (See section
2.2).
3.
Connect 18 AWG min., 300 V min. insulated wiring for Line voltages and Neutral to
the appropriate locations in the breaker panel, in accordance with all national and
local electrical codes; see Figure 9 for wiring diagram.
4.
Route wires through the conduit if not already done.
5.
Trim the wire to the appropriate length to avoid coils of excess wiring.
6.
Strip wiring to approximately .300 inches if needed and connect to the appropriate
terminals. Wires should be tightened so that they are held snuggly in place, but do
not to over-tighten, as this may compress and weaken the conductor
3.7 Variations and Installation of Current Transformers
To reduce risk of electric shock, always open or disconnect the
circuit from the power distribution system of a building before
installing or servicing current transformers.
In accordance with NEC, CTs may not be installed in any panel board
where they exceed 75% of the wiring space of any cross-sectional area.
General Requirements:
•
Splices on the CT leads must be within the meter enclosure, not inside the conduit. IMS
provided CT leads are 24 inches minimum. Wire insulation should be stripped so that the
bare conductor length that connects to the meter terminal block does not exceed 0.300
inches.
•
CTs should be securely fastened such that they will not slide down to live terminals.
•
Wires should be tightened so that they are held snuggly in place, but do not to over-
tighten, as this may compress and weaken the conductor.
•
Current and voltage inputs must be installed ‘in phase’ for accurate readings (e.g. CT1 on
Line 1, CT2 on Line 2); see Figure 9.
Shop for Power Metering products online at:
1.877.766.5412
www.
PowerMeterStore
.com
