Winco MD25K/C - Manual (Page 10)

Page 8 41821 60706-120
switch to be in for automatic start operation.
18. Use the test switch on the transfer switch or shut
off the incoming power to test the complete system. The
MD25 should start up and the transfer switch should
transfer the load to the generator.
19. Compare the amperage reading from each leg on the
generator and insure that none of the legs is exceeding
the nameplate rating on the generator.
20. Upon completion of the test, leave all control mode
switches in the “AUTO” position.
21. The system is now ready to start and power the
loads should the power fail.
E. CONNECTING THE LOADS
There are two ways the loads may be connected to a
Mobile Diesel Generator.
1. FRONT PANEL - A variety of receptacles have been
provided for your convenience on the front panel. The
120 volt receptacles are powered when the voltage
selector switch is in the 120/240 or 120/208 volt position.
The 240 volt receptacles (although powered in both
positions) are only usable in the 120/240 volt position. In
the 120/208 volt position the 240 volt receptacles have
only 208 volts at them.
2. FULL POWER LOAD CONNECTION TERMINAL
BLOCK - For remote connections and connecting load
distribution boxes, heavy duty terminal blocks have
been provided. These terminal blocks are located on the
rear of the unit just below the main line circuit break-
ers. The neutral and ground are connected together at
this panel. For use with an isolated neutral, remove the
jumper strap between the neutral connection block and
the ground lug. This will isolate the neutral from the
ground and allow you single point grounding at a
distribution panel.When using these terminal blocks be
sure to use wire rated large enough to carry your full
load or the full rated load of the generator.
3. GROUNDING THE UNIT - To comply with current
safety standards this generator set must be properly
grounded. Ground the Mobile Diesel generator set by
driving an 8 ft copper ground rod into the earth. Then
connect a #4 AWG ground cable from the grounding lug
on the generator to the ground rod.
THE ENGINE CONTROL MODULE.
5. For most installations sixteen gauge wire is sufficient
to handle the control signal. On extremely long runs
increase wire size to minimize voltage drop.
6. Locate the neutral and full power output load connec-
tion terminal on the generator.
7. Locate and identify the "neutral" and "generator"
connections in the automatic transfer switch.
8. Connect the load block to the transfer switch using
the proper wire sizes. Refer to the National Electric
Code Handbook (NFPA 70) for proper wire type and
sizing. Use Table 310-16 for wiring run through conduit
and table 310-17 for free air wiring.
Use extreme caution when installing the delta voltage
pattern. One power leg of this 3 phase pattern produces
208 volts measured from line to neutral. Be sure to
match the location of the generator wild leg to the
location of the wild leg on the incoming power service.
Failure to do so will cause equipment damage to any 120
volt load incorrectly connected to this line.
9. Connect the neutral to the transfer switch using the
same wire size.
10. For isolated neutral operation remove the jumper
wire between the ground lug and neutral connection
block.
11. Ground the Mobile Diesel generator set using an 8 ft
copper ground rod or other approved grounding system.
Connect #4 Awg Copper cable from the ground lug on
the generator to the ground rod.
12. Set the selector switch on the transfer switch to the
“off” position.
13. Move the start switch on the MD25 to the “RUN”
position. The generator set will now start.
14. Check the voltage at the transfer switch. Verify that
it matches the incoming power line voltage line-to-line
and line-to-neutral on each leg.
15. Check the three phase rotation pattern. Insure that
you have the same rotation, with both the generator and
the normal power source.
16. Move the start switch on the MD25 to the “STOP”
position. Let the unit stop and then move the switch to
the “AUTO” position. This is the normal position for the
switch to be in for automatic start operations.
17 Move the selector switch on the transfer switch to
the “AUTO” position. This is the normal position for the