Galvanic Isolator; Bonding System - Pro-Line Boats 32 Express 2006 Owner's Manual

Galvanic Isolator

The galvanic isolator is located behind the starboard
panel in the mid berth cabin and above the carbon
monoxide detector.
Stray, low voltage current flowing between the AC safety
ground and DC bonding system is a principal cause of
"galvanic" action. This type of stray current will normally
overload your zinc anodes as they try to protect your boat
from other near by boats and/or metal objects of the
marina. Sacrificial zincs corrode away as they protect
metal thru hulls, shafts and props from damaging
galvanic corrosion and electrolysis.
Installing the galvanic isolator between the AC safety ground and DC bonding system interrupts the
galvanic circuit with other boats and the dock when your boat is plugged into a shore power system. It
also maintains an AC safety ground and solves the most common cause of corrosion. Corrosive action
on your zincs is significantly reduced while the integrity of the critical safety ground path is maintained.
This means a significant savings in boat haul out fees and zinc replacement costs.
The sacrificial zincs are located on the trim tabs and engines. The zincs should be checked periodically
and changed when needed.

Bonding System

All metal components that have water either going through them or touching them are bonded to the zinc
anodes on the transom of the boat. The zinc anodes should be checked periodically and changed when
needed.
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