Installation Guide

MNPV12 & 16 Combiner Instructions (continued)
3 |
P a g e 1 0 - 0 27- 1
R E V : B
Configurations:
The MNPV12 and MNPV16 combiners are listed for outdoor use. These PV combiners are designed for
combing PV strings up to 150 & 300 VDC using MNEPVXX circuit breakers, and up to 600VDC using MNTS
touch safe fuse holders.
The MNPV12 comes with a 200 amp plus busbar that
works with up to ten fuse holders or twelve 150VDC
circuit breakers. Two busbars can be joined together,
or separated to create two systems up to 5 strings of
fuse holders or 6 strings of breakers each. The pictures
to the right show breakers on the top row and fuse
holders on the bottom row.
The MNPV12-250 comes with 168 amp
busbars that work with up to six of the
MidNite 300VDC breakers. The MNPV12-
250 busbars may be joined to
accommodate 6 strings or separated for
two independent sets of three strings.
The MNPV16 comes with a 240 amp plus busbar to
accommodate up to 16 touch safe fuse holders.
The MNPV16-250 comes with a 240 amp plus busbar that
accommodates up to twelve 300VDC circuit breakers.
Note: The amperage rating of the plus busbars is noted above to help insure that the maximum current
rating is not exceeded in any field configuration.
The MNPV series of combiners may be used as a DC load center as well as a PV combiner.
Note: Touch safe fuse holders should never be opened under load! This is not one of those warnings to gloss
over! If opened under load, you WILL have a fire and it will not stop until the wires burn in half. There is a
good reason we make the enclosures out of metal.
Above: An example of why these
instructions should be followed.
Torque – Terminal Bus Bar
Tighten Bus Bar connections as follows:
10AWG 20 in-lbs (2.3Nm)
8AWG 25 in-lbs (2.8Nm)
6AWG 35 in-lbs (4.0Nm)
4AWG 45 in-lbs (5.1Nm)
2AWG – 1/0 50 in-lbs (5.6Nm)
This symbol indicates a
ground connection.