Owner`s manual

© 2009 Magnum Energy IncPage 16
Installation
Table 2-2, DC Wire Size For Increased Distance
Inverter
Model
Minimum Recommended DC Wire Size (one way)*
5 feet or less 5 to 10 feet 10 to 15 feet
In Conduit In free air In Conduit In free air In Conduit In free air
MS2012 #4/0 AWG #2/0 AWG #4/0 AWG x2 #4/0 AWG
not
recommended
#4/0 AWG x2
MS2812 #4/0 AWG #4/0 AWG #4/0 AWG x2 #4/0 AWG x2
not
recommended
not
recommended
MS4024 #4/0 AWG #2/0 AWG #4/0 AWG x2 #4/0 AWG
not
recommended
#4/0 AWG x2
* Copper wire rated with 90°C (194°F) insulation at an ambient temperature of 30°C (86°F).
2.4.3 DC Cable Connections
Do not put anything between the DC cable ring lug and the battery terminal post or the fl at metal
part of the inverter’s DC terminal. When connecting the DC cable to the battery or inverter DC
terminals, the cable should be placed directly against the inverter or battery terminals. Incorrectly
installed hardware causes a high resistance connection which could lead to poor inverter/charger
performance and may melt the cable and terminal connections.
Follow fi gures 2-5 and 2-6 on how to connect the DC cables and stack the hardware correctly.
Tighten the terminal connections from 10 to 12 ft lbf (13.6 to 16.3 N-m).
CAUTION: The DC terminal and Kep nuts are made of stainless steel which have a high
likelihood of seizure. To help prevent the bolt and nut from seizing - causing the bolts
to strip or snap/break-off - the use of anti-seize lubricant is highly recommended.
Info: If antioxidant grease or spray is used, apply it after all the connections have
been made and are properly tighten.
Info: A ½-inch wrench or socket is used to tighten the 5/16-18 SAE Kep nuts.
Figure 2-5, Battery Hardware
Installation
Figure 2-6, Inverter DC Hardware
Installation
battery cable
(with ring lug)
nut
split w asher
flat washer
Battery
Temperature
Sensor
battery
post
CAUTION:
Ensure nothing is
placed between
cable ring lug and
battery post.
5/16 -18
Kep nut
battery cable
(with ring lug)
Inverter DC
terminal
(5/16 -18 bolt,
5/8" length)
CAUTION:
Ensure nothing is
placed between
DC terminal
and ring lug.