Owners manual

MNPV2, MNPV3, MNPV4, MNPV6 Instructions (continued)
4 | P a g e 10- 0 1 0 - 1 R E V : G
Note: The plastic dead front fits very tight. You must first remove the lid in
order to remove the deadfront.
Remove the deadfront:
Pry off the lid as shown using something like a screwdriver as a lever.
The dead front will then come out easily.
MNPV6 shown with breakers & MNSPD Surge Suppressor MNPV3 with 3 breakers
The MNPV6 enclosure can be split into two sections making it equivalent to 2 MNPV3 combiners in one. This is
sometimes done in 12 and 24V systems where more controllers are required for additional power. For instance
in a 24 volt system using a 60 amp charge controller, you are limited to about 1600 watts of PV per controller. If
using Kyocera KC130 modules, you can make three strings of 4 modules in series. This adds up to 1560 watts
per controller. That is a good match of PV vs. controller capability. The MNPV3 can accommodate this
arrangement directly, but the MNPV6 can accommodate two of these systems, thus saving wiring, space and
money. See the following figure on splitting the busbar into two systems.
Torque –Fuseholder / Circuit Breaker
QY Circuit breakers 20 in-lbs (2.3Nm)
USM1 Fuseholders 15 in-lbs (1.7Nm)
Torque – Terminal Bus Bar
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)
Important notes for busbars on 1000 Volt units
Extra care must be taken with higher voltage units to ensure that safe spacing is maintained
around all connections.
!Caution! Never work on a live system. Lethal voltages are present when energized.
Lockout and tagout do not take chances with your life.