ing flammable gases or vapors. Use as few bends in the
pipe and as short a pipe as possible. The exhaust pipe
s h o u l d i n c l u d e a l o w p o i n t w i t h s u i t a b l e m e a n s f or
draining of condensate. Provide metal shields, 12 in-
ches larger in diameter than the exhaust pipe where the
line passes through flammable walls. Wrap the exhaust
pipe with asbestos if there is any danger of anyone
touching it.
Do not operate the engine Generator Set in an
e n c l o s e d a r e a u n l e s s t h e e x h a u s t g a s e s a re
p i p e d t o t h e o u t s i d e . I n h a l a t i o n o f e x h a u s t
fumes will result in serious illness or death.
TM5-6115-585-12
NAVFAC P-8-623-12
TO-35C2-3-455-1
T M - 0 5 6 8 4 C / 0 5 6 8 5 B - 1 2
d . L e v e l i n g . T h e G e n e r a t o r S e t i s a p o r t a b l e u n it
and is designed to operate satisfactorily up to 15º out-
of-level. Set up the unit as level. Set up the unit as level
a s p o s s i b l e a n d k e e p i t a s l e v e l a s p o s s i b l e d u r i n g
o p e r a t i o n.
e. Grounding. The Generator Set must be grounded
p r i o r t o o p e r a t i o n . T h e g r o u n d c a n b e , i n o r d e r of
preference: (1) an underground metallic water piping
system, (2) a driven metal rod, or (3) a buried metal
plate (figure 4-2). If the effectively grounded portion of
the buried metallic water pipe is less than 10 feet due to
insulated sections or joints, this preferred grounding
method must be supplemented by an additional driven
metal rod ground or a buried metal plate ground. A
d r i v e n m e t a l g r o u n d r o d m u s t h a v e a m i n i m um
diameter of 5/8 inch if solid or 3/4 if pipe, and driven
to a minimum depth of 8 feet. A buried metal ground
p l a t e m u s t h a v e a m i n i m u m a r e a o f 9 s q u a r e f e e t,
m i n i m u m t h i c k n e s s o f 1 / 4 i n c h , a n d b e b u r i e d a t a
minimum depth of 4 feet. The ground lead must be at
least No. 6 AWG (American Wire Gauge) copper wire.
Change 4
4.2.1/(4-2.2
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