Regal 26 FASDECK Owner's Manual page 65

DIRECT CURRENT 12 VOLTS
Your Regal boat uses 12 volt DC electricity otherwise
known as direct current. It is called DC because it ows
only one way in a circuit. Speci cally to name a few,
helm gauges, batteries, battery cables, engine electrical
components, engine wiring harnesses, dash switches,
selected lighting, shower sump, bilge pumps, and vacuum
toilets are all components using a 12 volt DC system.
In the DC system used in the United States the red wire
is designated as the "hot" or conductor wire and the
black wire is referred to as the ground wire. At times
other current carrying wires are color coded such as
blue to identify their use as a low voltage conductor.
is is especially helpful in troubleshooting and adding
additional equipment. Be sure to review the wiring
schematics in the drawing section of the technical
chapter.
Direct current is stored in the ship's batteries and
produced through the engine alternator while the engine
is running or by the battery charger at dockside.
e alternator charges the batteries by sending current
through the main distribution panel relays, battery
switches and harnesses to the appropriate battery. Normal
DC voltage is between 12 and 15 volts. Lower or higher
readings could indicate a charging malfunction or a
weak battery.
e engine alternator used on your boat is internally
self "excited" and produce DC current at idle. Normal
alternator output would be around 105 amps.
TYPICAL BATTERY 12 VOLTS DESCRIPTION
On board the boats direct current (DC) is stored in the
ship's "wet cell" battery(ies).
As part of the standard equipment package a Type 31
A battery is used for engine cranking and on board
equipment. is system uses an "on" and "o " battery
switch located under the a port deck cushion.
battery switch controls a majority of all on board
equipment including starting the engine.
Note that stereo memory and auto bilge pump circuits
are energized even though the main battery switch is
turned o .
More o en the on board battery circuit includes one
engine starting battery and a "house" type battery. Both
batteries are of the Type 31A.
identical but their functions are speci c and unique.
Included in this system is a dual battery switch.
permits the operator to select an additional position on
this battery switch named "combine batteries". Let's say
the engine cranks very slow in the battery switch "on"
position. When combine batteries position is chosen
both batteries operate together for increased engine
starting power.
Note that with weak batteries it is necessary to choose
the "combine batteries" position on the battery switch
in order for both batteries to initiate the charging
process.
CAUTION
!
AVOID POSSIBLE ENGINE DAMAGE!
NEVER TURN THE MAIN BATTERY SWITCH
TO THE "OFF" POSITION
WITH THE ENGINE RUNNING!
10
Chapter 4
e batteries may appear
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