TM 5-5420-227-24
GEN ERAL M AI N T EN AN CE -Cont inue d
Sa fe t y Wiring Proc e dure s (She e t 1 of 2 )
N OT E
T he double -t w ist m e t hod of sa fe t y w iring is use d a s t he
c om m on m e t hod of sa fe t y w iring. U se t he double -t w ist
m e t hod for sc re w s in c lose d ge om e t ric pa t t e rns w hic h se c ure
hydra ulic or a ir se a ls, hold hydra ulic pre ssure , or a re use d in
c rit ic a l a re a s of c lut c h m e c ha nism s.
N OT E
Whe n sa fe t y w iring w ide ly spa c e d m ult iple groups (fa st e nings
from 4 t o 6 inc he s a pa rt ) by t he double -t w ist m e t hod, t hre e
unit s a re t he m a x im um num be r t ha t m a y be w ire d in se rie s.
Whe n sa fe t y w iring m ult iple groups, t he m a x im um num be r of
unit s t ha t m a y be sa fe t y w ire d is lim it e d t o t he num be r t ha t
c a n be w ire d w it h a 2 4 inc h le ngt h of w ire .
N OT E
T he single -w ire m e t hod is use d in a c lose ly spa c e d (m a x im um
of 2 inc he s be t w e e n c e nt e rs), c lose d ge om e t ric pa t t e rn
(t ria ngle , squa re , re c t a ngle , c irc le , e t c .) on pa rt s in e le c t ric a l
syst e m s a nd in sim ila r pla c e s t ha t w ould m a k e t he single -w ire
m e t hod m ore fe a sible . U se t he single w ire m e t hod for she a r
a nd se a l w iring a pplic a t ions.
N OT E
U se c oppe r w ire only for se c uring e m e rge nc y de vic e s a nd
inst a ll so t ha t it c a n be e a sily brok e n w he n re quire d.
Go on to Sheet 2
TA169888
C-2 8