Installation Manual

Prewired MNPV8 Installation Instructions (continued)
10-205-1 Rev: - Page 4 of 6
The diagram to the right shows typical connections for the MNPV8 combiner. Note that items inside the dashed
lines are external to the combiner.
The solar panel connectors are all factory pre-wired leaving only the combined plus and minus as well as the
ground connections to be completed at installation.
Solar panels and wire size: The MNPV8 is rated
for up to 600 VDC. The busbars and output box
lug are UL and CSA listed for 90 degree
Centigrade.
Recommended torque values. These values apply to all the bus bars and the Plus output box lug.
The fuse holders are factory wired, but use the values above should retightening
Be required for any reason. Re-torque fuse holders after one hour.
The MidNite MNPV8 combiners utilize touch safe fuse holders and fuses
rated for up to 600 volts DC. The MNPV8 can accommodate eight USM1
type fuse holders made by Ferraz Shawmut or other compatible fuse holders.
Fuses are available from 1 to, 30 amps. (80 amps total for MNPV4 & 60
amps total MNPV2)
The combiners come with 15 amp fuses installed.
Do not open the fuseholders under load.
You WILL have a fire on your hands!
Left: Combiner installed on
A pole mount array.
Torque –Fuseholder
USM1 Fuse holders 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)
Right:
Ferraz Shawmut
USM1 Touch Safe fuseholder
Midnite Solar part number - MNTS