Onan DYG Series Operator's Manual And Parts Catalog page 26

GENERATOR CONNECTIONS
The model YB17 generator is a 3-phase 60-Hertz (or
50-Hertz) set which can be connected in either series
wye or parallel wye configuration to give the line to
neutral and line to line voltage options referred to in
Table 1 and Figure 22. The line to neutral voltage is
the lower voltage rioted on the unit nameplate, while
the line to line voltage is the higher nameplate rating.
Refer to Figure 23 for an example of 120/208 voltage.
F I G U R E 23. 3 PHASE WYE C O N N E C T I O N
For 3-phase loads connect separate load wires to
each of the set terminals L l , L2 and L3(Figure 22). For
a large single phase load only, connect between
terminals L1 and L2. Available capacity is 2/3 max-
imum output.
RECONNECTION
BAR STOWAGE
8 1 7 8
F I G U R E 24. LOAD WIRE CONNECTIONS
Bus bars and reconnection bars are aluminum, plated
with tin to retard electrolytic corrosion. Select con-
necting cables and terminal lugs with care, to keep
dissimilar metals apart. Do not overtorque bolts.
The terminal LO can be grounded. For 1-phase loads
connect the neutral wire to the LO terminal. Connect
the load wire to eitherterminal — L l , L2. Two separate
single phase circuits are available with a total capaci-
ty of up to 2/3 of the generator rated 3-phase output.
ONAN r*comm«nda that all connactlona Irom tha ganarator to tha
bua-bara and from tha bua-toars to tha load bamada by a quallflad
alactriclan. All appllcabla local and atata laws atwuM ba compllad
with.
If using 1 -phase and 3-phase current at the same time,
ensure the 1-phase load is properly balanced. Do not
exceed rated line current.
24