5-1
Battery Systems
Section 5
General Description
Your boat is equipped with a 12 volt direct current (12
VDC) electrical system. The 12 VDC electrical system
provides power to all DC electrical loads on the boat.
The complete 12 VDC electrical system consists of
six
main power distribution circuits
that are electrically
connected on the negative side of the system.
Power for all 12 VDC systems is normally supplied by
one house (electronics) battery and one engine start-
ing battery.
The engine and house batteries are charged when the
outboard engine is running above idle speed, regard-
less of battery OFF-ON switch position.
Each electrical circuit is configured as a two-wire, neg-
ative-return system, which includes a 12 VDC power
lead and a negative-return lead. Each electrical circuit
is powered by one of two 12-volt batteries, is con-
trolled by one of two battery OFF-ON switches, and is
protected by one or more circuit breakers.
All 12 VDC wiring in your boat conforms to ASTM
Standard B-33 and is premium-grade tinned copper
marine cable, designed to minimize voltage drop and
resist corrosion. The termination of each 12 VDC
electrical circuit is protected from moisture intrusion by
self-sealing heat-shrink insulation on each connector.
Summary of Contents for Boston Whaler 21 Guardian Series
Page 18: ...1 10 Section 1 Safety Deck Occupancy Chart...
Page 20: ...1 12 Section 1 Safety Warning Label Chart 1 2 3 4 5 6 7 8 9 6 0 A B D G C E F...
Page 22: ...1 14 Operator Notes...
Page 52: ...2 30 Operator Notes...
Page 56: ...3 4 Section 3 Fuel Systems Fuel System Diagram 1 2 5 3 6 7 9 4 8 0 A B C...
Page 68: ...4 2 Section 4 Boat Systems Control Console Layout 1 2 3 4 5 7 6 8 9 0 B A C E G I D F H J K...
Page 97: ...5 7 Operator Notes...
Page 126: ...6 20 Operator Notes...