ARMY TM 9-6115-604-12
NAVY NAVFAC P-8-633-12
Site Selection. The generator set must be suitably located When choosing a site, consider the following:
(1) Interconnections If the generator set is to be used In parallel with another generator set, they must be close
enough to each other to allow Interconnections with available cables Similarly, if the generator set is to be tied to a public
utility, cable limitations must again be considered. The generator set comes equipped with the following cables:
(a) Load Cables Four 100-foot (30.5-meter) cables Used to connect generator output to the load
(b) Remote Control Cable Assembly (if procured) Used to connect generator set to remote control
module(RCM). 100 feet (30 meters) long.
(c) Reactive Cable Assembly 100 feet (30.5 meters) long.
(d) Governor Paralleling Circuit Cable Assembly. 100 feet (30 5 meters) long.
(e) Ground Cables. Two 50-foot (15-meter) cables Used to ground the generator set and site requirement
module (SRM) Refer to step b, below for grounding requirements.
Station Power Cable Assembly. 100 feet (30 5 meters) long.
(2) Clearances To allow ease of access and ensure adequate air supply to the generator set, the set should be
clear of obstruction on radiator end 50 ft and 10 ft on all other sides.
(3) Weight. The generator set weighs approximately 37,500 pounds (17,025 kg) dry, or 39,600 pounds (17,978
kg) wet. This weight is distributed, by skid base main girders, to an average of 750 pounds per square foot (3660 kg per
square meter) The surface where the set is to be sited must be able to support this weight.
(a) Indoor Siting Be sure the floor surface is rated for the load It will have to bear.
(b) Outdoor Siting Be sure the ground Is not too soft. Logs or heavy planking under the skid base should be
used where the firmness of the soil Is doubtful Be sure to consider effects of rain when judging soil firmness. Be sure the
radiator end faces with (not against) the prevailing winds.
(4) Leveling. The generator set should be sited on a level surface (within 5 degrees) It must not be out of level
by more than 5 degrees (6 gradients).
(5) Exhaust Fumes If siting the generator set indoors, measures must be taken to vent exhaust fumes to the
outside atmosphere If necessary, loosen screw and nut which secure the weather cap to the exhaust outlet and remove
weather cap Install a gas-tight metal exhaust pipe from the exhaust outlet to the outside atmosphere. Keep the pipe as
short as possible and with as few bends as possible The pipe should include a low point with means for draining
condensation. Provide metal shields, 12 inches (305 mm) diameter larger than the exhaust pipe where pipe passes
flammable walls Insulate pipe wherever danger of contact with personnel exists.
(6) Air Supply If siting the generator set Indoors, measures must be taken to ensure the generator set receives a
maximum supply of fresh air If necessary, provide duct work, with an opening at least as large as the radiator, to the
outside atmosphere. If louvers are used at the air entrance, increase duct work cross-sectional area by 50 percent.
(7) Emplacement After selecting site for generator set emplace, in accordance with lifting procedures in
Grounding (General). Consult your local facility engineer on the grounding method to be used. Use two
grounding rods on each set If grounding rods are used Use separate grounds for paralleled units. Steps c, d, and e,
below, provide acceptable grounding methods. The generator set comes equipped with the following grounding