Tiara Yachts 53 COUPE, Owner'S Manual

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ELECTRICAL SYSTEMS
4-9 53 COUPE
Using the optional inverter will reduce the functionality of the AC system. The in -
verter will allow the use of only the refrigerator/freezer, 120V outlets, microwave
and deck grill.
The amount of time these items will be powered depends on the charge level
of the house battery bank. Monitor the house battery bank voltage (see section
4.2.3) frequently during inverter operation. If the voltage drops below 11.5 volts,
discontinue inverter use.
4.3 BONDING SYSTEM
Your boat’s bonding system provides a low-resistance electrical path between
otherwise isolated metallic objects, particularly those in common contact with sea
water and subject to possible galvanic corrosion.
The bonding system is connected to two large zinc sacrificial anodes mounted
to the transom of your boat. These anodes are provided to purposely deteriorate
over time, to assure that other components do not. The anodes must be checked
periodically to determine their status and be replaced when they become depleted
by 50% or more. Active corrosion protection is provided for the Volvo
®
IPS drives
(in boats equipped with the Volvo ® engine package), as they are not connected
to the bonding system. The trim tabs and optional swim platform lift system have
their own anodes for added protection. These anodes must be checked periodi -
cally as well, and replaced when they become depleted by 50% or more.
The bonding system is connected to the main DC grounding buss and the AC
grounding buss. This establishes the water as ground potential and helps prevent
the existence of electrical potential on exposed metallic hardware and electrical
equipment.
Your Tiara is equipped with an Electrical Leakage Circuit Interrupter (ELCI) and a
Galvanic Isolator that protect the boat from galvanic corrosion and shore power
shock hazards. The ELCI prevents AC electrical current from ‘leaking’ out from
your boat into the water. The Galvanic Isolator keeps stray current in the water
from entering your boat.