NCCER PLUMBING FINAL EXAM 2025/2026
QUESTIONS WITH CORRECT EXPLAINED
ANSWERS || 100% GUARANTEED PASS!!
<RECENT VERSION>
1. Gray water shall be disinfected by an approved method that employs one or
more disinfectants such as _____. 1 Chlorine 2. Iodine 3. Ozone. IPC 1302 -
ANSWER ✔ All of the above
2. A plumbing permit becomes invalid if the work authorized by the permit is
not started within _____ days from the date of issue, or if the work
authorized by the permit is stopped or abandoned after the work is started for
a period of _____ days. IPC 106.5.3 - ANSWER ✔ 180, 180
3. All horizontal drains within a building shall be provided with cleanouts
located not more than _____ feet apart. GA 708.3.1 - ANSWER ✔ 100
4. The following are acceptable as a cleanout in lieu of the upstream cleanout
required to be placed at the end of a horizontal drain pipe serving _____. 1.
"P" traps into which floor drains, shower drains, or tub drains with
removable strainers 2. building drains with a cleanout located near the
junction of the building drain and the building sewer which may be rodded
both ways 3. "P" trap into which a residential washing machine discharges.
IPC 708.3.1 - ANSWER ✔ 1, 2, and 3
5. Plumbing permits are set by_____? IPC 106.6.2 - ANSWER ✔ local
ordinance
6. Standpipes shall extend a maximum of _____ inches and a minimum of
_____ inches above the trap IPC 802.4 - ANSWER ✔ 42, 18
,7. Vent stack shall connect at or below the lowest horizontal branch and where
the vent stack connects to the building drain, the connection shall be located
downstream of the drainage stack and _____. IPC 904.4 - ANSWER ✔
connect within a distance of ten times the diameter of the drainage stack
8. The maximum distance of 3" trap with a 3" fixture drain shall be from its
vent is _____. IPC 909.1 - ANSWER ✔ 12'
9. A wet vent may serve _____. IPC 912.1 - ANSWER ✔ A water closet,
shower, floor drain, and lavatory located on the same floor level within one
bathroom.
10.A circuit vent may protect a maximum of _____ fixture traps with their
fixture drains connected to a horizontal branch drain. IPC 914.2 - ANSWER
✔8
11.Combination waste and vent systems shall not receive the discharge from
fixtures other than _____. IPC 915.1 - ANSWER ✔ floor drains, sinks,
lavatories and drinking fountains, food waster grinders, & clinical sinks
12.Air admittance valves shall be located a minimum of _____ inches above the
horizontal branch drain or fixture drain being vented. IPC 918.4 - ANSWER
✔4
13.A combination-plumbing fixture is permitted to be installed on one trap
provided that one compartment is not more than _____ inches deeper than
the other compartment and the waste outlets are not more then _____ inches
apart. IPC 1002.1 - ANSWER ✔ 6, 30
14.The size of the vertical conductors and leaders, building storm sewers, and
any horizontal branches of such drains or sewer shall be based on the _____
year hourly rainfall. IPC 1106.1 - ANSWER ✔ 100
15.Information required on a permit application is established by _____. IPC
10.3 - ANSWER ✔ Local ordinance
16.A vent connecting one or more individual vents with a vent stack, stack vent
or terminating in the open air is _____. IPC 202 - ANSWER ✔ Branch vent
,17.Potable water systems or part thereof shall be subjected and proved tight
under a minimum pressure test of _____? IPC 312.5 - ANSWER ✔ Working
pressure
18.Air may be used to test a potable water system or part thereof if _____? IPC
312.5 - ANSWER ✔ The pipes are metallic
19.Solders used to make joints in potable water systems shall contain no more
than _____ % lead. IPC 605.15.4 - ANSWER ✔ .2%
20.Except where a parallel water distribution system manifold with shutoff
valves is used, shutoffs for individual fixtures shall be located _____? IPC
606.2.2 - ANSWER ✔ on the fixture supply of the fixture
21.Where water is heated and stored in a closed plumbing system and thermal
expansion can occur, a device shall be installed that would limit the pressure
to no more than _____? IPC 607.3.2 - ANSWER ✔ 80 PSI
22.Who can contract for plumbing work under GA State Law? GA Law -
ANSWER ✔ Master Plumber
23.A clean out is not required on the upstream end of a horizontal drain line if it
serves_____. 1. Water closet 2. Floor drain, shower drain or tub drain with a
removable strainer 3. Trap with clean out plug or removable trap. GA
708.3.1 - ANSWER ✔ All of the above
24.The size of clean outs shall not be less than _____.GA 708.7 - ANSWER ✔
The size of the pipe they are connected to up to 4"
25.A person may not engage in plumbing (for the general public) in TX unless
the person is - ANSWER ✔ Is an RMP
Works under the supervision of an RMP
26.A person may not install Med Gas piping unless the person - ANSWER ✔ Is
a TX licensed Journeyman
Master Plumber
, 27.A person may not install a Multipurpose Residential Fire Protection
Sprinkler System, with no backflow preventer, unless the person is -
ANSWER ✔ Is a TX licensed Journeyman or Master Plumber
Holds the MRFPSS endorsement
28.TSBPE licenses must be renewed - ANSWER ✔ Annually
29.TSBPE endorsements must be renewed - ANSWER ✔ Every 3 Years
30.A license of endorsement which has been expired for the 90 days or less
may be renewed by paying fee that is equal to - ANSWER ✔ 1 - 1/2 times
the normal renewal fee
31.A license or endorsement with has been expired for more than 90 days but
less than two years may be renewed by paying a renewal fee equal to -
ANSWER ✔ 2 times the normal renewal fee
32.A license or endorsement that has been expired more than Two years may be
renewed by paying a renewal fee that is equal to - ANSWER ✔ THE
LICENSE CANNOT BE RENEWED
33.Six hours of Plumber's Continuing Education must be completed by anyone
who - ANSWER ✔ Wished to Renew a license
34.How many members make up the TSBPE - ANSWER ✔ 9
35.A Registered Apprentice can never legally perform plumbing without direct
on-the-job supervision - ANSWER ✔ False
36.Maintenance Men may legally perform some plumbing without a license. -
ANSWER ✔ False
37.Every plumbing company in operation in TX must have RMP - ANSWER ✔
True
38.Licensed plumbers must have their license with them while plumbing -
ANSWER ✔ True
QUESTIONS WITH CORRECT EXPLAINED
ANSWERS || 100% GUARANTEED PASS!!
<RECENT VERSION>
1. Gray water shall be disinfected by an approved method that employs one or
more disinfectants such as _____. 1 Chlorine 2. Iodine 3. Ozone. IPC 1302 -
ANSWER ✔ All of the above
2. A plumbing permit becomes invalid if the work authorized by the permit is
not started within _____ days from the date of issue, or if the work
authorized by the permit is stopped or abandoned after the work is started for
a period of _____ days. IPC 106.5.3 - ANSWER ✔ 180, 180
3. All horizontal drains within a building shall be provided with cleanouts
located not more than _____ feet apart. GA 708.3.1 - ANSWER ✔ 100
4. The following are acceptable as a cleanout in lieu of the upstream cleanout
required to be placed at the end of a horizontal drain pipe serving _____. 1.
"P" traps into which floor drains, shower drains, or tub drains with
removable strainers 2. building drains with a cleanout located near the
junction of the building drain and the building sewer which may be rodded
both ways 3. "P" trap into which a residential washing machine discharges.
IPC 708.3.1 - ANSWER ✔ 1, 2, and 3
5. Plumbing permits are set by_____? IPC 106.6.2 - ANSWER ✔ local
ordinance
6. Standpipes shall extend a maximum of _____ inches and a minimum of
_____ inches above the trap IPC 802.4 - ANSWER ✔ 42, 18
,7. Vent stack shall connect at or below the lowest horizontal branch and where
the vent stack connects to the building drain, the connection shall be located
downstream of the drainage stack and _____. IPC 904.4 - ANSWER ✔
connect within a distance of ten times the diameter of the drainage stack
8. The maximum distance of 3" trap with a 3" fixture drain shall be from its
vent is _____. IPC 909.1 - ANSWER ✔ 12'
9. A wet vent may serve _____. IPC 912.1 - ANSWER ✔ A water closet,
shower, floor drain, and lavatory located on the same floor level within one
bathroom.
10.A circuit vent may protect a maximum of _____ fixture traps with their
fixture drains connected to a horizontal branch drain. IPC 914.2 - ANSWER
✔8
11.Combination waste and vent systems shall not receive the discharge from
fixtures other than _____. IPC 915.1 - ANSWER ✔ floor drains, sinks,
lavatories and drinking fountains, food waster grinders, & clinical sinks
12.Air admittance valves shall be located a minimum of _____ inches above the
horizontal branch drain or fixture drain being vented. IPC 918.4 - ANSWER
✔4
13.A combination-plumbing fixture is permitted to be installed on one trap
provided that one compartment is not more than _____ inches deeper than
the other compartment and the waste outlets are not more then _____ inches
apart. IPC 1002.1 - ANSWER ✔ 6, 30
14.The size of the vertical conductors and leaders, building storm sewers, and
any horizontal branches of such drains or sewer shall be based on the _____
year hourly rainfall. IPC 1106.1 - ANSWER ✔ 100
15.Information required on a permit application is established by _____. IPC
10.3 - ANSWER ✔ Local ordinance
16.A vent connecting one or more individual vents with a vent stack, stack vent
or terminating in the open air is _____. IPC 202 - ANSWER ✔ Branch vent
,17.Potable water systems or part thereof shall be subjected and proved tight
under a minimum pressure test of _____? IPC 312.5 - ANSWER ✔ Working
pressure
18.Air may be used to test a potable water system or part thereof if _____? IPC
312.5 - ANSWER ✔ The pipes are metallic
19.Solders used to make joints in potable water systems shall contain no more
than _____ % lead. IPC 605.15.4 - ANSWER ✔ .2%
20.Except where a parallel water distribution system manifold with shutoff
valves is used, shutoffs for individual fixtures shall be located _____? IPC
606.2.2 - ANSWER ✔ on the fixture supply of the fixture
21.Where water is heated and stored in a closed plumbing system and thermal
expansion can occur, a device shall be installed that would limit the pressure
to no more than _____? IPC 607.3.2 - ANSWER ✔ 80 PSI
22.Who can contract for plumbing work under GA State Law? GA Law -
ANSWER ✔ Master Plumber
23.A clean out is not required on the upstream end of a horizontal drain line if it
serves_____. 1. Water closet 2. Floor drain, shower drain or tub drain with a
removable strainer 3. Trap with clean out plug or removable trap. GA
708.3.1 - ANSWER ✔ All of the above
24.The size of clean outs shall not be less than _____.GA 708.7 - ANSWER ✔
The size of the pipe they are connected to up to 4"
25.A person may not engage in plumbing (for the general public) in TX unless
the person is - ANSWER ✔ Is an RMP
Works under the supervision of an RMP
26.A person may not install Med Gas piping unless the person - ANSWER ✔ Is
a TX licensed Journeyman
Master Plumber
, 27.A person may not install a Multipurpose Residential Fire Protection
Sprinkler System, with no backflow preventer, unless the person is -
ANSWER ✔ Is a TX licensed Journeyman or Master Plumber
Holds the MRFPSS endorsement
28.TSBPE licenses must be renewed - ANSWER ✔ Annually
29.TSBPE endorsements must be renewed - ANSWER ✔ Every 3 Years
30.A license of endorsement which has been expired for the 90 days or less
may be renewed by paying fee that is equal to - ANSWER ✔ 1 - 1/2 times
the normal renewal fee
31.A license or endorsement with has been expired for more than 90 days but
less than two years may be renewed by paying a renewal fee equal to -
ANSWER ✔ 2 times the normal renewal fee
32.A license or endorsement that has been expired more than Two years may be
renewed by paying a renewal fee that is equal to - ANSWER ✔ THE
LICENSE CANNOT BE RENEWED
33.Six hours of Plumber's Continuing Education must be completed by anyone
who - ANSWER ✔ Wished to Renew a license
34.How many members make up the TSBPE - ANSWER ✔ 9
35.A Registered Apprentice can never legally perform plumbing without direct
on-the-job supervision - ANSWER ✔ False
36.Maintenance Men may legally perform some plumbing without a license. -
ANSWER ✔ False
37.Every plumbing company in operation in TX must have RMP - ANSWER ✔
True
38.Licensed plumbers must have their license with them while plumbing -
ANSWER ✔ True
