Magnum Energy ME Series, Operator'S Manual

Page: 23 / 77

2. INSTALLATION
3. Installation,
continued
DC Fuse Block
A fuse or circuit breaker must be located within 18 inches of the battery to protect the DC wiring
system. The device must be rated to match the size of the cable, but can be rounded up to the next larger
size ( i . e . , a cable rated at 150 amps can accept a 175 amp fuse) as necessary.
Mount the fuse block (or circuit breaker assembly) as near as practic al to the b a t t e r i e s .
Remove the fuse (or open the circuit breaker) and connect a short cable (same rating as the battery
cables) to one end of the fuse block.
Connect the short cable to the positive battery terminal.
C o n n e c t t h e p o s i t i v e c a b l e ( R E D ) f r o m t h e i n v e r t e r t o t h e a s s e m b l y . D O N O T
connect the positive cable to the inverter at this time.
S e c u r e l y t i g h t e n t h e f u s e b l o c k ’ s l u g s . O n c e t h e e n t i r e i n s t a l l a t i o n i s c o m p l e t e ,
r e i n s e r t t h e f u s e i n t o t h e f u s e b l o c k b e f o r e c o n n e c t i n g 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 .
Conductor Size #2 AWG #2/0 AWG #4/0 AWG
Rating (conduit) 115 A max 175 A max 250 A max
Rating (free air) 170 A max 265 A max 360 A max
Breaker N/A DC175 DC250
Fuse 200 A 300 A 400 A
Table 3 - DC Fuse Rating