4-9
FIGURE 4-9. 120/240 VOLT, SINGLE PHASE
ES1804
L1
L0
L2
120V
240V
120V
For 240 volts, connect one load wire to the L1 connection
and the second load wire to the L2 connection. Terminal
connection L0 is not used for 240 volt service.
120/240 Volt, 3 Phase, 4 Wire Delta Connected Set:
The 3- phase delta connection is designed to supply 120
and 240 volt, 1 phase current and 240 volt, 3 phase cur-
rent (Figure 4-10). In 3-phase operation, connect the
three load wires to generator terminals L1, L2 and L3 -
one wire to each terminal. In 3-phase operation, the L0
terminal is not used.
FIGURE 4-10. 3 PHASE, DELTA CONNECTION
ES1805
L1
L0
L2
L3
120V
120V
240V
240V
240V
200V
L1
L2
L3
DO NOT USE THIS
CONNECTION FOR
ANY 120 VOLT LOADS
For 120/240 volt, 1-phase, 3-wire operation, terminals L1
and L2 are the “hot” terminals. The L0 terminal is the
neutral, which can be grounded if required. For 120 volt
service, connect the black load wire to either the L1 or L2
terminal. Connect the neutral (white) wire to the L0 termi-
nal. Two 120 volt circuits are available.
Any combination of 1-phase and 3-phase loading may be
used at the same time, if no terminal current exceeds the
nameplate rating of the generator. If no 3-phase output is
used, usable 1-phase output is 2/3 of 3 phase kVA.
3 Phase, 4 Wire, Wye-Connected Set:
The 3 phase, 4
wire connection produces line-to-neutral voltage and
line-to-line voltage. The line-to-neutral voltage is the
lower voltage as noted on the unit nameplate, and the
line-to-line voltage is the higher nameplate voltage.
For 3-phase loads, connect separate load wires to each
of the set terminals L1, L2 and L3. Single-phase output of
the higher nameplate voltage is obtained between any
two 3-phase terminals as shown in Figure 4-11.
FIGURE 4-11. 3 PHASE, WYE CONNECTION
ES1806
L1
L0
L2
L3
120V
120V
L1
L2
L3
120V
208V
208V
208V
The terminal marked L0 may be grounded if necessary.
For 1- phase loads, connect the neutral (white) load wire
to the L0 terminal. Connect the black load wire to any one
of the other three terminals - L1, L2 or L3. Three separate
1- phase circuits are available, with not more than 1/3 the
rated capacity of the set available at any one circuit.
If using 1-phase and 3-phase current at the same time,
use care to properly balance the 1 phase load, and not to
exceed rated line current.
Figure 4-11 shows load connections for 120/208 voltage.
Other voltages are available from either parallel wye or
series wye, illustrated in Figure 4-12.
