TM 5-6115-627-14&P
b.
Grounding. Check that individual power unit generator sets are grounded to GROUND TERMINAL studs
on their respective trailer frames. Using ground wire supplied with power plant, connect GROUND TERMINAL lug
on switch box to a suitable ground as described below. The following sources of good ground are listed in order
of preference.
(1)
(2)
(3)
NOTE
As a substitute for the supplied ground wire, any copper wire of a least No. 6 AWG may
be used.
Underground water system. Ground power plant 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 earth.
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 3/4-inch if pipe.
NOTE
It may be necessary to saturate the area around ground rod with water if soil conditions
are dry.
Ground plate. Ground power unit to a metal plate buried four feet deep. Ground plate should cover a
minimum area of nine square feet.
c.
External Fuel Line Connection. (See figure 4-4.) Either or both of the power units that make up the power
plant can be fueled from an external source. The external source could be a five-gallon fuel can or 55 gallon
drum. This eliminates the need for frequent refilling of a generator’s fuel tank during long intervals of operation.
(1)
(2)
(3)
(4)
(5)
Remove fuel can adapter and fuel pickup tube from storage locations on power unit and assemble by
threading pickup tube into adapter.
Thread one end of auxiliary fuel line onto fuel can adapter fitting and tighten.
Connect free end of auxiliary fuel line to AUXILIARY FUEL CONNECTION. This connection is located
next to the fuel filler above the trailer roadside fender.
Insert fuel can adapter in external fuel source and secure by pressing down on lever.
Set FUEL SELECTOR VALVE beneath fuel filler to AUXILIARY position.
4-6
