Parallel Connection; Battery Wiring - Magnum Energy ME Series Operator's Manual

3. Installation,
continued Battery
Wiring
WARNING: During the installation and wiring process, cover exposed battery cable ends with electrical
tape to prevent shorting the cables.
N O T E : D O N O T c o n n e c t t h e p o s i t i v e c a b l e t o t h e i n v e r t e r a t t h i s t i m e .
Depending upon the type of battery you use in the installation (6 or 12 VDC), the b a t t e r i e s m u s t b e
w i r e d i n s e r i e s , p a r a l l e l o r s e r i e s / p a r a l l e l t o p r o v i d e 1 2 V D C . T h e interconnecting battery
cables must be sized and rated exactly the same as those that used to connect the inverter.
When connecting the cable to the battery terminal, hardware should be installed i n t h e f o l l o w i n g
o r d e r : b o l t , r i n g w a s h e r , c a b l e l u g , ( b a t t e r y t e r m i n a l ) , r i n g w a s h e r , lock washer, nut.
Tighten terminal connections to at least 10 to 12 foot pounds.
When two cables are connected to a terminal (i.e., negative terminal), the hard ware should be
i n s t a l l e d i n t h e f o l l o w i n g o r d e r : b o l t , r i n g w a s h e r , D C n e g a t i v e c a b l e l u g , i n v e r t e r
n e g a t i v e c a b l e l u g , ( b a t t e r y t e r m i n a l ) , r i n g w a s h e r , l o c k w a s h e r , n u t .

Parallel Connection

(multiple 12 VDC batteries to create a 12 VDC string)
A parallel connection combines overall battery capacity by the number of batter ies in
the string. Even though there are multiple batteries, the voltage remains the same. In the example on the
next page (Figure 7), four, 12 VDC, 100 AHr batteries a r e c o m b i n e d i n t o a s i n g l e s t r i n g ,
r e s u l t i n g i n a 1 2 V D C , 4 0 0 A H r b a n k .
Connect the negative battery terminals together using short cables. Connect the
p o s i t i v e b a t t e r y t e r m i n a l s t o g e t h e r u s i n g s h o r t c a b l e s .
C o n n e c t t h e n e g a t i v e b a t t e r y c a b l e ( B L A C K ) f r o m t h e i n v e r t e r t o t h e n e g a t i v e
terminal of the end battery. At the same time, connect a DC ground cable between t h e n e g a t i v e
t e r m i n a l a n d t h e v e h i c l e ' s D C g r o u n d i n g b u s .
C o n n e c t t h e p o s i t i v e ( R E D ) b a t t e r y c a b le from the inverter to the positive termi nal of
the battery at the opposite end of the string. This is essential to ensure even charging and discharging
across the entire battery string.
N O T E : A f u s e m u s t b e p l a c e d b e t w e e n t h e p o s i t i v e t e r m i n a l a n d t h e p o sitive (RED)
b a t t e r y c a b l e t o t h e i n v e r t e r .
Once the batteries are completely wired and tested, coat the terminals with an a p p r o v e d a n t i-
o x i d i z i n g s p r a y .
Nut - Washer - Lug - Terminal - Washer - Bolt
Figure 5
Battery Hardware Installation
Ó 2003 - Magnum Energy, Inc.
2. INSTALLATION
Nut - Washer - Lug - Inverter Terminal
Figure 6
Inverter Hardware Installation
13