HONEYWELL E-MON® MMU-STYLE METERS
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6.0 MMU CABINET WIRING
6.1 General Wiring Instructions
Wiring of the individual MMU meters are the same as for a stand-alone meter.
See section 7.0.
Refer to the Individual Meter Installation Manual for individual meter wiring.
Fig. 4. MMU Terminal.
Some MMU units may come from the factory already pre-wired for the voltage to
the installed meters. When supplied this way, there will be a terminal block
located inside the MMU that is labeled A, B, C, N. See Figure 4. The letters refer to
the three phases and neutral connections already made to the meters. The power
only has to be landed on the terminal block in order to power all of the meters in
the MMU.
As with the stand-alone meters, the power wires must be fused. The size of the
fuse will be determined by the number of meters installed in the MMU. The
Littelfuse KLDR series are used for this component. Each meter point requires 1/
10 amp fusing. With 8 meters, a one amp fuse would be acceptable.
The current sensor wiring is installed by bringing in the leads from their source
and landing them on the appropriate terminals on the meter’s sensor input
terminals.
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62-0417_B.fm Page 10 Tuesday, May 8, 2018 1:35 PM