Shore Power Transfer Switch - Westerbeke BCGA-60HZ Service Manual

Gasoline generators single phase
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SHORE POWER TRANSFER SWITCH
· SINGLE LINE 120 VOLT SYSTEM
Generator
~
....
-
......
'-------;..</[5)
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,
__
..
/
If the installet: connects shore power to the vessel's AC
circuit, this must be done by means of the Shore Power
Transfer Switch. Set the transfer switch shown in the
diagrams to the OFF position. This switch prevents
simultaneous connection, of shore power to generator output.
Generator
~
NOTE: This diagram shows connections for a
two wire, 120V system from the generator with
a three wire -120V boat system.
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- I l l ·
!r
!.
'!
..
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z
L2
1'....---...,
.__ _
_.,.L1
L---t--+---+t91
\
Neutral
SHIPS LOAD
Notice the repositioning of the white wire ground load on the
terminal block to the generator case.
0
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::)
0
a:
CJ,
·GENERATOR.
~
.N
L1
SHIP'S
LOAD'
....
-
.....
/
'
'----~~5
~N
(NEUTRAL}I
I
6
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/
__
.,
-
SHIP'S
""
SHORE
GROUND
-GROUND
ll1
N)
.
T
.
SHORE POWER
Switching Shore Power to Generator Power
A
CAUTION:
Heavy motor leads should be shut off
before switching shore power to generator power or
vice-versa because voltage surges induced by switching
with heavy AC loads on the vessel being operated may
cause 'damage to the exciter circuit components in the
generator.
A
CAUTION:
Damage to the11enerator can result
If
utility shore power and generatiJi'outpu~ are connected
at the same time. This type of gentirator damage Is not
covered under the warranty; it
is
the installer's
responsibility to make sure all
AC
connections are
correct.
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.
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.... /
. (no 240V equipment)
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:1
(GRN) .
-
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Shore Power
Engines & Generators
77

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