Magnum Energy Mini Magnum Panel (MMP Series) - Manual (Page 14)

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©
2013 Magnum Energy, Inc.
Introduction
13
DC Ground Stud – This 5/16” stud is connected to the MMP enclosure chassis and is
provided as a connection point to the DC grounding electrode when the conductor is
larger than #1/0 AWG.
This 5/16” stud also connects to the DC shunt through a busbar and serves as the DC
negative-to-ground connection point. If installing a PV-GFP device, this busbar must be
removed (see Section 2.12).
Note: For ground wires #1/0 AWG or smaller, use the DC negative busbar (Item 20).
14
DIN Rail Track – For installing up to eight 1/2” (12.7mm) wide, DIN rail-mounted,
Q-Frame type breakers. These breakers can be used for connecting DC loads or installing
a PV-GFP device.
15
Mounting Holes (x8) – For installing up to four 1” (25.4mm) wide, back-mounted,
E-Frame type breakers. These breakers can be used for connecting DC loads or installing
a PV-GFP device.
16
Inverter DC Disconnect Breaker – This disconnect is a heavy-duty high amperage circuit
breaker specifi cally designed for the MMP enclosures. It provides an easy and convenient
way to isolate the inverter from the battery, and meets the NEC/CEC requirements for DC
overcurrent protection when used in accordance with the installation instructions in this
manual. The amperage rating depends on the MMP model (175 or 250 amps).
17
Battery Positive Connection – The bottom of the inverter’s DC disconnect is the
connection point to the positive terminal of the battery bank. The DC disconnect has a
front connected terminal with 3/8-16 captive nuts.
18
Battery Positive Busbar – This busbar is connected to the battery bank positive
through the bottom of the inverter DC disconnect. This busbar is the battery positive
common point for connecting additional DC circuits, such as from the output of a charge
controller or connecting to DC load breakers.
This busbar is rated to handle 120 amps, and has dual hole sizes—two # 14 to #1/0
AWG and fi ve #14 to #6 AWG—with screw type compression terminals (no ring lugs
required).
19
PV Positive Busbar – This busbar provides a convenient connection point inside the
MMP for the positive output from a PV array and the positive input to the PV charge
controller.
This busbar is rated to handle 120 amps, and has dual hole sizes—two # 14 to #1/0
AWG and fi ve #14 to #6 AWG—with screw type compression terminals (no ring lugs
required).
20
DC Negative Busbar – This busbar is connected to the battery bank negative through
the load side of the DC shunt. This busbar is the battery negative common point for
connecting additional DC circuits, such as from the DC negative output of a charge
controller or combining the negatives of DC load circuit breakers.
This busbar is rated to handle 120 amps, and has dual hole sizes—two # 14 to #1/0
AWG and fi ve #14 to #6 AWG—with screw type compression terminals (no ring lugs
required).