ARMY ELECTRICAL EXPLOSIVES SAFETY (AMMO28)
EXAM 2025–2026 Accurate Real Exam Questions
and Verified Correct Answers
Which bonding condition applies to a 65-foot metal antenna? - ANSWER-- condition 1
What does D represent in the Basic Bonding Formula? - ANSWER--bonding distance
How many inches should the tip of an air terminal be above the object or area it protects? -
ANSWER--WRONG 24
WRONG 18
Which statement regarding bonding is true? - ANSWER--Bonding reduces the threat of sideflash by
providing a low impedance path to ground
How many feet radius does the DoD require for an LPS zone of protection? - ANSWER--100ft
While conducting an LPS inspection, you discover the scenario illustrated in the image below. Do you
write it up as a discrepancy? - ANSWER--yes, because the air terminal is not attached to a conductor.
While conducting an LPS inspection, you see down conductors like those illustrated in the image below.
Do you write it up as a discrepancy? - ANSWER-- yes, because mast down conductors should be 180
degrees apart
A 30-foot building has a metal light fixture located 23 feet from the ground. Which condition is used to
determine if the light fixture must be bonded to the LPS? Refer to the bonding job aid as required. -
ANSWER--condition 2a(2)
During an LPS inspection you notice a newly-installed grounded metal pipe 3 feet from a down
conductor.
,Should you write it up as a possible discrepancy? - ANSWER--yes. Grounded metal objects within 6 feet
of a conductor should be considered for bonding
Which bonding method is used where strength and security are most critical? - ANSWER-exothermic
weld
When conducting a fall-of-potential ground resistance test on a facility where ammunition and
explosives are stored, what is the maximum allowable resistance reading for an LPS? - ANSWER--25
ohms
While conducting an LPS inspection, you see the scene in the image below. Does this comply with LPS
standards? - ANSWER--no, because the surveillance cameras are outside the zone of
protection
For best accuracy, how many individual resistance tests should be performed on this conductive floor? -
ANSWER--10 tests: 5 electrode-to-electrode and 5 electrode-to-ground tests
Which test is used to verify the integrity of the LPS grounding system? - ANSWER-- fall-ofPotential
Ground Resistance Test
Which test is used to verify the integrity of air terminals and down conductors? - ANSWER-
continuity/Resistance Test
How many individual continuity/resistance tests are required on an integral LPS with 12 air terminals
and 2 down conductors? - ANSWER--WRONG 12
24
, When performing a conductive floor test, what is the minimum distance required between test
electrodes and grounded metal objects? - ANSWER--WRONG 6 feet
According to the identification plate below, the component is certified for Group C and - ANSWER--
WRONG group B
Which bonding condition applies to isolated metal objects surrounded by non- conductive material (i.e.,
a metal door frame in a brick wall)? - ANSWER--WRONG Condition 1
While conducting a continuity/resistance test on the integral LPS below, test leads are placed on ground
rod S and air terminal N. In addition to bonds A, J, and M, which bond is being tested? - ANSWER--
WRONG H
When conducting a continuity/resistance test on a conductor less than 65 feet long, the maximum
allowable reading is - ANSWER--WRONG 5 ohms
WRONG 25 ohms
When conducting a fall-of-potential ground resistance test on a facility measuring 130 feet diagonally,
how far from the ground rod should the P2 test probe be placed? - ANSWER--65 feet
This conductive floor was tested at 5 locations. All electrode-to-electrode resistance readings were
between 48,000 ohms and 80,000 ohms. Did this particular test pass? Refer to AFI 321065, Section A6.7
as required. - ANSWER-- yes, because any resistance reading above 25,000 ohms is acceptable.
EXAM 2025–2026 Accurate Real Exam Questions
and Verified Correct Answers
Which bonding condition applies to a 65-foot metal antenna? - ANSWER-- condition 1
What does D represent in the Basic Bonding Formula? - ANSWER--bonding distance
How many inches should the tip of an air terminal be above the object or area it protects? -
ANSWER--WRONG 24
WRONG 18
Which statement regarding bonding is true? - ANSWER--Bonding reduces the threat of sideflash by
providing a low impedance path to ground
How many feet radius does the DoD require for an LPS zone of protection? - ANSWER--100ft
While conducting an LPS inspection, you discover the scenario illustrated in the image below. Do you
write it up as a discrepancy? - ANSWER--yes, because the air terminal is not attached to a conductor.
While conducting an LPS inspection, you see down conductors like those illustrated in the image below.
Do you write it up as a discrepancy? - ANSWER-- yes, because mast down conductors should be 180
degrees apart
A 30-foot building has a metal light fixture located 23 feet from the ground. Which condition is used to
determine if the light fixture must be bonded to the LPS? Refer to the bonding job aid as required. -
ANSWER--condition 2a(2)
During an LPS inspection you notice a newly-installed grounded metal pipe 3 feet from a down
conductor.
,Should you write it up as a possible discrepancy? - ANSWER--yes. Grounded metal objects within 6 feet
of a conductor should be considered for bonding
Which bonding method is used where strength and security are most critical? - ANSWER-exothermic
weld
When conducting a fall-of-potential ground resistance test on a facility where ammunition and
explosives are stored, what is the maximum allowable resistance reading for an LPS? - ANSWER--25
ohms
While conducting an LPS inspection, you see the scene in the image below. Does this comply with LPS
standards? - ANSWER--no, because the surveillance cameras are outside the zone of
protection
For best accuracy, how many individual resistance tests should be performed on this conductive floor? -
ANSWER--10 tests: 5 electrode-to-electrode and 5 electrode-to-ground tests
Which test is used to verify the integrity of the LPS grounding system? - ANSWER-- fall-ofPotential
Ground Resistance Test
Which test is used to verify the integrity of air terminals and down conductors? - ANSWER-
continuity/Resistance Test
How many individual continuity/resistance tests are required on an integral LPS with 12 air terminals
and 2 down conductors? - ANSWER--WRONG 12
24
, When performing a conductive floor test, what is the minimum distance required between test
electrodes and grounded metal objects? - ANSWER--WRONG 6 feet
According to the identification plate below, the component is certified for Group C and - ANSWER--
WRONG group B
Which bonding condition applies to isolated metal objects surrounded by non- conductive material (i.e.,
a metal door frame in a brick wall)? - ANSWER--WRONG Condition 1
While conducting a continuity/resistance test on the integral LPS below, test leads are placed on ground
rod S and air terminal N. In addition to bonds A, J, and M, which bond is being tested? - ANSWER--
WRONG H
When conducting a continuity/resistance test on a conductor less than 65 feet long, the maximum
allowable reading is - ANSWER--WRONG 5 ohms
WRONG 25 ohms
When conducting a fall-of-potential ground resistance test on a facility measuring 130 feet diagonally,
how far from the ground rod should the P2 test probe be placed? - ANSWER--65 feet
This conductive floor was tested at 5 locations. All electrode-to-electrode resistance readings were
between 48,000 ohms and 80,000 ohms. Did this particular test pass? Refer to AFI 321065, Section A6.7
as required. - ANSWER-- yes, because any resistance reading above 25,000 ohms is acceptable.
