1
Systems
ELECTRICAL OVERVIEW
Your vessel uses direct current (D.C.) and alternating
current (A.C.). 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
information.
Your vessel may not contain all of the typical equipment
or systems shown.
Regal has the right to change,
update or add equipment and systems at anytime
as our on-going committment to upgrading our
product line.
DIRECT CURRENT (D.C.)
Your vessel utilizes 12 volt D.C. electricity otherwise
known as direct current. It is called D.C. 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, toilets, 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.
Direct current is produced through the engine alternator
while the boat engine is running. The alternator charges
the batteries and sends current through the main
distribution panel and battery switch via 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 alternator is normally internally “excited” around 1200
revolutions per minute and will show normal readings up
to 15 volts as the engine speeds above the idle range. At
idle speeds below 1200, the volt meter will show around
12 volts. With the key in the “on” position and a fully
charged battery the volt meter should read around 9 volts.
Voltages below this indicate a possible electrical problem.
PREVENT SEVERE INJURY OR DEATH!
USE ONLY APPROVED MARINE
REPLACEMENT PARTS
THAT ARE IGNITION PROTECTED.
!
PREVENT SEVERE INJURY OR DEATH!
BE SURE TO DISCONNECT
ALL ELECTRICAL POWER SOURCES
BEFORE ATTEMPTING TO REPAIR OR
REPLACE ELECTRICAL COMPONENTS.
!
Chapter 5
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