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TM 9-2330-272-14
2-13. BONDING AND GROUNDING PROCEDURES (Con’t).
(3) Bonding is an electrical connection between metallic units, for instance the semitrailer and a fuel
terminal facility Bonding equalizes any static potential that might exist between units.
(4) Grounding is an electrical connection between one or both of the bonded units and ground.
Grounding effectively discharges into the earth any static potential that might exist or that might be generated.
(5) If two or more units are bonded and one is grounded, the whole system is effectively grounded.
b. General Bonding and Grounding.
WARNING
Connect bonding and grounding connections before beginning any fuel handling
operation or performing any maintenance on semitrailer. Maintain bonding and
grounding connections until after all fuel handling or maintenance is completed.
Connections must be made to clean, unpainted surfaces. An unbended and
ungrounded or improperly bonded and grounded semitrailer could produce a spark.
The resulting explosion will cause serious injury or death to personnel.
NOTE
Illustration shows typical grounding procedure.
(1) Open cabinet and unwind grounding cable (1) from static reel (5). Firmly attach two clips (2 and 4) to
ground point at fuel terminal facility.
(2) If fuel terminal facility does not have a ground point, remove ground rod (3) from roadside stowage
tube assembly and drive well into ground (FM 10-68).
TA702648
2-23
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