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Charles Industries, Ltd. All rights reserved. Printed in the United States of America.
INTRODUCING... THE 3.6 KVA IsoG2
Thank you
for purchasing the IsoG2
! Your IsoG2 completely isolates input power from output power providing
an improved degree of safety and reducing galvanic current corrosion due to the direct connection to AC shore
power.
Warranty/Registration
Before proceeding, complete and mail back the Warranty Registration card.
Manual Purpose
With your personal safety in mind, this manual lists important safety precautions first, then covers installation,
operation, maintenance, troubleshooting, warranty, and customer service information.
APPLICATION
The 3.6 KVA IsoG2 is a shoreline isolation transformer intended for boats with 30 amp/120 volt service. Properly
installed, it will electrically isolate AC shore power from the boat’s AC power system, reducing galvanic current
corrosion due to the AC shore power connection.
The boat’s electrical system and grounding conductor are not actually connected to the shoreside system when
you use the 3.6 KVA IsoG2 as an isolation transformer. Power is transferred from the shoreside electrical system
to the boat’s electrical system by magnetic coupling. This means there is no direct electrical connection between
the earth-grounded shore AC power and boat AC power systems. The shore grounding conductor is connected to
a shield that is wound between the primary (shore) and secondary (boat) transformer windings. This shield as-
sures isolation on the boat by providing a protective layer between primary and secondary windings within the
transformer. In the unlikely event of a breakdown within the transformer, the shield can withstand the fault current
of a properly sized shore supply circuit breaker long enough for the breaker to trip. In addition, by grounding the
specified connection on the transformer’s secondary side to the boat a “neutral” ground is established for the ves-
sel’s electrical system. When using the transformer, shoreline polarity is no longer a consideration and a shoreline
polarity device is not necessary.
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
. This manual contains important safety and operating instructions
for the IsoG2. Read the entire manual before usage.
Also read all instructions and cautions for and on the
IsoG2.
Warnings
To avoid serious injury or death from high voltage electrical shock disconnect AC shore power before
opening panel.
WARNING — HIGH VOLTAGE
Primary overcurrent protection and conductor sizing must be in accordance with manufacturer’s
installation instructions.
WARNING — FIRE HAZARD
On board and in-water shock hazard. Transformer must be connected in accordance with
manufacturer’s installation instructions.
WARNING — SHOCK HAZARD
Do not store equipment on or next to transformer. This unit is designed to operate hot and must have
free air flow to prevent over heating or charring of adjacent material.
WARNING — FIRE HAZARD
