(14) On both power units, open control panel doors and the two doors immediately below the
b. Grounding. Check that the individual power unit generator sets are grounded to the 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 a good ground are listed in order of preference.
As a substitute for the supplied ground wire, any copper wire of at least No. 6
AWG may be used.
(1) 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 the earth.
(2) Ground rod. Drive grounding 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.
It maybe necessary to saturate the area around ground rod with water if soild
conditions are dry.
(3) Ground plate. Ground power plant 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 a 55-galIon drum. This eliminates the need for frequent refilling of a generator sets fuel tank
during long intervals of operation.
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 into external fuel source and secure by pressing down on lever.
Set FUEL SELECTOR VALVE beneath fuel filler to AUXILIARY position.