Quadlogic MiniCloset-5c, Installation Manual

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Chapter 4 Installation
© COPYRIGHT 2009
Quadlogic Controls Corporation
14
I
NSTALLATION
I
NSTRUCTIONS FOR
M
ETER
, MCI,
AND
CT
S
The use of the following procedure is mandatory both for safety and meter certification
purposes. Certification requires a visual inspection of the current transformers and the
voltage taps on the incoming feeder phase wires.
The MiniCloset-5c installation procedure consists of the following steps:
1. Install metal box
2. Optional communication module is installed, run communications wiring
3. Connect the meter’s voltage inputs to supply voltage
4. Install Current Transformers (CT) in distribution panel and connect to the meter’s
current inputs
5. Install meter head and optional communications unit, plug in to wiring harness
The installer needs to understand the following:
In order for the meter to be certified after installation, it must be possible to identify the
phase to which each voltage tap and CT is connected. Therefore, it is a requirement that all
wires be properly color-coded. Failure to color-code the wires will make it impossible to
certify the meter, and may require the entire installation to be re-done. In this document,
we use the following color code:
Black – Phase A, or Line 1 for 240V installations
Red – Phase B, or Line 2 for 240V installations
Blue – Phase C
White – Neutral (In wye installations only)
Local codes may require a different color code. If so, the installer must use the required
color code consistently for each wire connecting the meter to the distribution panel.
Step 1: Install the back box and conduit
The MC-5c back box is the enclosure for the MCI and fuse block. The MC-5c back box is
supplied with the fuse block pre-installed. If the optional communication module is ordered,
it is pre-mounted to the MC-5c front cover. The MCI board contains the 48 screw terminal
connections for the current transformers. It is supplied with the MCI and current connector
wiring harness installed, with the CT shorting links in place.
1. Locate a section of wall to mount the meter. This should be as close as possible to the
distribution panel (preferably within 24”).
2. Mount the MC-5c back box to the wall. Connect the distribution panel box to the MC-5c
back box with a metal conduit. This conduit will be used for the voltage taps. (Note: The
installer should use caution in creating punch outs other than those provided as this may
prevent the proper installation of the meter head). There will be between 2 and 4
#12AWG wires in this conduit, connected to the hot line(s) and neutral (if present). The
conduit should be sized to accommodate this. Also, a fused disconnect for the hot wires
may be required. If so, the conduit should run through the fused disconnect.