Systems; Electrical Overview; Direct Current (Dc); Technical Drawings - Regal 3760 Owner's Manual

ELECTRICAL OVERVIEW

Your vessel uses both direct current (DC) and alternating
current (AC). You need to understand the basics of each
type of electrical power used on board. Besides the general
information in this manual, refer to the various equipment
manufacturer's literature located in the owner's information
packet. Also, contact your closest Regal dealer or marine
professional as required for troubleshooting and repairs.
Your vessel may not contain all of the equipment or
systems shown. Regal has the right to change, update or
add equipment and systems at anytime.
WARNING
!
PREVENT SEVERE INJURY OR DEATH!
USE ONLY APPROVED MARINE
REPLACEMENT PARTS
THAT ARE IGNITION PROTECTED.
WARNING
!
PREVENT SEVERE INJURY OR DEATH!
BE SURE TO DISCONNECT
ALL ELECTRICAL POWER SOURCES
BEFORE ATTEMPTING TO REPAIR OR
REPLACE ELECTRICAL COMPONENTS.

Systems

DIRECT CURRENT (DC)

Your vessel uses 12 volt DC electricity otherwise known
as direct current. It is called DC because it flows only one
way in a circuit. Specific wiring harnesses, gauges, batteries,
battery cables, engine electrical components, dash switches,
lighting, fresh water, shower sump and bilge pumps,
refrigerators, Vacuflush heads, along with any overcurrent
protection are all part of the low voltage system. In this
system, the black wire is designated as the "hot" or
conductor wire and the white wire is referred to as the
ground wire. All other current carrying wires are color
coded to identify their circuit. This is especially helpful in
troubleshooting and adding additional equipment. Be sure
to review the wiring schematics in the technical drawing
section located in the technical chapter.
Direct current is produced through the engine alternator
while the boat engines are running. The alternators charge
the batteries and send current through the main distribution
panel, battery isolator and battery switch through the
required harnesses to the appropriate battery. Normal
voltage on the dash volt meter is between 12 and 15 volts.
Lower or higher readings could indicate a charging
malfunction or weak battery.
The alternators are normally internally "excited" around
1200 revolutions per minute. At idle speeds below 1200,
the volt meter will show around 12 volts.
Direct current is stored in the ship's wet cell batteries. There
are 2 engine starting batteries and a deep cycle "house"
battery on the 3760.
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