Operating Guide

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7DK-042a
Twin Tech (Parallel generator operation)
Two EF2000iSv2 generators can be operated in paral-
lel to increase the rated output to 3.0 kVA and the
rated current to 25.0 A. For parallel operation, use
only a special parallel cable set (optional equipment)
approved by Yamaha; contact your Yamaha dealer for
the proper parallel cable set.
The handling, operation procedure and the notes on
usage are described in the parallel cable set owner’s
manual included in the parallel cable set. Consult a
Yamaha dealer for this parallel cable set.
TIP
The EF2000iSv2 may be connected in parallel with an
earlier model Yamaha EF2000iS. However, a second
Yamaha EF2000iSv2 is recommended to use the full
capabilities of this model.
NOTICE
To avoid severe damage to the generators or other
equipment:
9 Never attempt to parallel Yamaha generators of
different outputs or a Yamaha generator with
any other brand.
9 Connect the parallel cable set to the genera-
tors before starting the generators and turn off
the generators before disconnecting them.
Never connect the parallel cable set to running
generators or disconnect them from the gen-
erators during parallel operation.
9 Do not use parallel cable set with only one
generator or with just one generator running.
9 During parallel operation, do not use the AC
receptacles on the generator control panel.
9 Never allow the parallel cable set to hang
close to the exhaust side of the generator.
Heat from the exhaust could damage the par-
allel cables.
9 Do not attempt to modify the parallel cable set
in any way, such as to try to use three genera-
tors.
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