Owner`s manual

4-2
Section 4 Electrical System
OS 255
Battery Switches and Main Breakers
Twin Engines (typical)
Battery Switches and Main Breakers
Single Engines (typical)
Battery Switches
There are two battery switches and one par-
allel switch to manage the 12-volt power dis-
tribution. The starboard engine battery,
controlled by switch number 1, provides
engine-starting power only. The port engine
battery, controlled by switch number 2, pro-
vides power to the helm, DC and electronics
circuits. On single engine boats, the number
1 battery switch controls the battery for the
engine.
The parallel switch connects the batteries for
emergency starting if one of the batteries is
dead or low. As long as the parallel switch
remains in the "OFF" position, the starboard
engine battery will not be discharged by the
use of 12-volt accessories and equipment
on the boat.
Make sure to activate the number 1 and 2
battery switches whenever the engine(s) are
running to ensure that all 12-volt accesso-
ries will operate as needed. Current is sup-
plied to the automatic float switches for the
bilge pumps and stereo memory when the
batteries are connected and the battery
switches are off.
Main Breakers
The main breakers are located adjacent to
the battery switches and provide protection
for all DC power.
Helm Main
Supplies 12-volt current to the MDP located
in the cabin.
DC Main
Reserved for electronics installations, the
DC main supplies power to the buss bar
located behind the helm.
24-Hour Essential Circuits
The stereo memory, aft bilge pump float
switch and forward bilge pump float switch
remain on, regardless of the battery switch
position.
Windlass (Optional)
The breaker must be in the "ON" position to
use the windlass. Turning off this breaker
when the windlass is not in use reduces the
possibility of accidentally activating the wind-
lass.
Voltage Sensitive Relay (VSR)
The VSR allows the engine and house bat-
teries to be charged by one engine in a sin-
gle engine installation. The VSR prevents
both batteries from being discharged by
automatically isolating the engine battery
from the house battery.
! CAUTION
Do not operate the boat on a continu-
ous basis with the emergency parallel
switch in the "on" position.