TM 9-6115-647-14&P
(9)
Remove paralleling cable from storage box located inside generator set enclosure at curbside
rear. Connect paralleling cable between primary and standby unit. Refer to TM 5-6115-465-
12 for paralleling procedures.
(10)
Deleted.
(11)
Deleted.
(12)
Close all doors on generator set enclosure except control panel doors and the two doors
immediately below the control panel.
(13)
Check that generator set fuel selector valve is set to AUXILIARY.
b.
Grounding. Check that generator set, auxiliary fuel tank and PDU are grounded to GROUND
TERMINAL stud on trailer frame. Remove power unit ground wire from its storage position on trailer next to
PDU. Using ground wire, connect power unit GROUND on adapter plate assembly to a suitable ground as
described below. The following sources of good ground are listed in order of preference. Connect the primary
and standby units to the same ground rod.
WARNING
Be sure to ground both the primary power unit and standby unit generator sets.
NOTE
As a substitute for the supplied ground wire, any copper wire of at least No 6 AWG may be used.
(1)
Ground rod. Drive ground rod a minimum of eight feet into earth. A ground rod must have a
minimum diameter of 5/8-inch, if solid, or ¾ -inch if pipe.
NOTE
It may be necessary to saturate the area around ground rod with water if soil
conditions are dry.
(2)
Ground plate. Ground power unit to a metal plate buried four feet deep. Ground plate should
cover a minimum area of nine square feet.
(3)
Underground water system. Ground power unit to one of the accessible pipes in an
underground water system. Make certain underground pipe is made of metal and there is no
insulation, such as a water meter, between ground wire and the earth.
Change 1
4-5
