Dc System; Batteries - Sea Ray 44 Sedan Bridge Owner's Manual

S
1. DC S
YSTEM
The 12 volt direct current (DC) electrical system
derives its power from the batteries, which are kept
charged by an engine-driven alternator and/or AC
converter. The battery voltage is indicated by the
voltmeter on the main distribution panel and control
station instrument panel. Each battery bank can be
checked with the battery voltage test switch on the
DC distribution panel or the voltmeters at the helm,
when the ignition is on. The batteries supply power
to the main DC breaker panel in the bilge. In turn,
this panel distributes power to the electronic fuse
block and the control station breaker panel at the
helm and to the DC distribution panel in the salon.
The 12 volt helmstation and cockpit systems are
protected by the ELECTRONICS and CONTROL
STATION breakers on the main DC breaker panel
on the forward bulkhead of the bilge. The 12 volt
functions on the salon DC distribution panel are
protected by the "CABIN MAIN" breaker on the main
DC breaker panel.
The negative terminal of each bank of batteries is
attached to the main DC negative bus and the
negative studs of the propulsion engines and the
generator. This "negative ground system" is the
approved system for marine DC electrical systems.
2. B
ATTERIES
The batteries in your boat have been selected for
their ability to furnish starting power based on engine
and generator starting requirements as well as their
ability to supply power to the DC system.
The following table describes the recommended
marine cranking batteries to install in your boat.
Application Group Volts
Engines 31DCM 12
Bow Thruster 31DCM 12
*COLD CRANKING AMPS
The main engine cranking batteries consist of four
(4) 31DCM series, 12 volt batteries, two (2) for each
engine. If equipped with a bow thruster, there are
44 Sedan Bridge (455 Sedan Bridge)
6 • E
ECTION LECTRICAL
CCA* Reserve Qty.
800 200 4
800 200 2
S
YSTEM
B P C
ATTERIES OSITIVE ABLE
(F . 6.1.1)
IG
E
D
C
B
A
A STARBOARD BATTERIES
B PORT BATTERIES
C MAIN DISCONNECT ENCLOSURE
D
MAIN DC BREAKER PANEL
B N C
ATTERIES EGATIVE ABLE
(F . 6.1.2)
IG
G
F
E
D
C
B
A STARBOARD BATTERIES
B STARBOARD BATTERIES NEGATIVE
TERMINAL JUMPER
C PORT BATTERIES
D MAIN DISCONNECT ENCLOSURE
E
MAIN DC NEGATIVE BUS
R
OUTING
F
FWD
G
H
PORT ENGINE POSITIVE
E
STARBOARD ENGINE POSITIVE
F
G PORT BATTERIES POSITIVE
H
STARBOARD BATTERIES POSITIVE
R
OUTING
FWD
H
I
A
F PORT ENGINE NEGATIVE
ENGINE TO ENGINE NEGATIVE
G
H STARBOARD ENGINE NEGATIVE
I
PORT BATTERIES NEGATIVE
6.1