47
Systems
A 60 amp (60 hertz)
galvanic isolator for do-
mestic use is connected
in series with the AC
grounding “green” wire.
Overseas yachts use a 30
amp (50 hertz) galvanic
isolator. It is mounted in
the port stairway locker.
The purpose of the galvanic isolator is to isolate the
yacht’s grounding system from the shorepower ground.
The galvanic isolator allows AC voltage to travel back to
the green ground wire at the marina power center in the
event a short exists on the boat. Also, the isolator blocks
any DC current from traveling on the green ground wire.
This eliminates the possibility of galvanic interaction
from other boats in the vicinity.
The green ground or “bonding wire” runs from the
yacht’s shore power inlet or optional cord reel to the gal-
vanic isolator. From the output of the galvanic isolator it
runs to the AC ground buss located behind the AC main
control panel in the salon.
Since the galvanic isolator is not polarized either termi-
nal can be used for the inlet or output side for the green
grounding wire. See the illustration.
There is a fan located inside the isolator. If you ever hear
the fan running the isolator has failed. Disconnect the
shore power from the boat and check the system. Call
your closest Regal yacht dealer for more information.
Do not to store objects inside the locker that might in-
hibit air fl ow to the galvanic isolator fan.
The ELCI can ocassionally undergo “nuisance tripping”
which can cause the breaker itself to trip. This can be
caused by overloads in the electrical draw. One way to
minimize the situation should it occur is to monitor clos-
er the energized devices on the yacht which will assist in
keeping the total amperage used to a minimum.
GALVANIC ISOLATOR
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