IEC 3A Exam Questions and Answers With Verified Solutions 2025
The purpose of connecting the main bonding jumper is to ___.
Select one:
a.lead stray currents away from the equipment
b.minimize static electricity
c.provide an effective path for ground-fault current
d.minimize shock hazard - ✔✔2020 NEC: 100_Bonding Jumper, Main
The correct answer is: provide an effective path for ground-fault current
Which of the following determines the severity of an electric shock?I. the path taken by current through
bodyII. the length of time current flowsIII. the amount of current flowing
Select one:
a.II & III only
b.I & II only
c.I & III only
d.I, II & III
e.II only - ✔✔The correct answer is: I, II & III
Electricians must be concerned with height transitions between areas with different ___ heights.
Select one:
a.roof
b.ceiling
c.both a and b
d.neither a nor b - ✔✔The correct answer is: both a and b
As used in reference to construction drawing, CAD is an abbreviation for ___.
Select one:
a.Cylindrical Area Dimensions
,b.Computer Aided Drafting
c.Centered Air Diffuser
d.Copper or Aluminum Device - ✔✔The correct answer is: Computer Aided Drafting
BCES Panel LD is located in Main Electrical Room (D154). Conduits can be stubbed up, turned, and then
extended through the ___ wall to the required outlets.I. north II. east III. south IV. west
Select one:
a.I or II only
b.III or IV only
c.II or III only
d.any of these - ✔✔The correct answer is: I or II only
___ is a special moisture-resistant type of gypsum board attached to wall studs and used in damp areas,
such as in bathrooms.
Select one:
a.Durock®
b.Greenboard - ✔✔The correct answer is: Greenboard
On building project drawings, references made to above finished floor and above floor are equivalent.
Select one:
a.True
b.False - ✔✔The correct answer is: False
The wood used in BCES walls to provide substantial support for wall-hung equipment and millwork is
fire-treated lumber.
Select one:
a.True
b.False - ✔✔The correct answer is: True
,___ is a special cement-based type of board attached to wall studs and used in wet areas, such as in
bathrooms.
Select one:
a.Wonderboard®
b.Durock®
c.Hardibacker®
d.any of these - ✔✔The correct answer is: any of these
The conduit for the drinking fountains on the east side of BCES Corridor D130 can be installed straight
up from the box, through the stud wall behind the equipment.
Select one:
a.True
b.False - ✔✔As discussed in the curriculum manual, this is a chase-type, half wall, Type G. The conduit
must be routed to an adjacent wall.
The correct answer is: False
On the BCES plans, "SIM" is an abbreviation for ___.
Select one:
a.simulated
b.similar
c.striated imitation marble
d.scaled in metrics - ✔✔The correct answer is: similar
On architectural plans, "O.H." is an abbreviation for ___. O.H. typically appears adjacent to detail
callouts.
Select one:
a.or higher
b.opposite hand
c.overhead
, d.on hold - ✔✔@ Rm A112 Detail 4 on Dwg A8.1 shows O.H.This detail shows 24"-deep millwork on the
left and 30"-deep millwork on the right For Rm A112 the millwork detail is Opposite Hand (mirror image)
because the deeper portion is on the left.
The correct answer is: opposite hand
Revisions to construction drawings are indicated by ___.
Select one:
a.a numbered, triangular symbol near the revised area or item
b."clouding" around the revised area or item
c.both a and b
d.neither a nor b - ✔✔both a and b
As a consideration for the receptacle outlet box installation in BCES Room B114, the stud-to-finish
dimension is ___.
Select one:
a.1"
b.5/8"
c.17/8"
d.11/4"
e.11/8" - ✔✔5/8" rock + 3/8" for tile = 1"
The correct answer is: 1"
The walls in BCES Mechanical Room C109 are ___.
Select one:
a.painted CMUs
b.painted sheetrock
c.VWC over sheetrock
d.none of these - ✔✔The correct answer is: painted sheetrock
BCES Room D136 has a(n) ___ ceiling.
The purpose of connecting the main bonding jumper is to ___.
Select one:
a.lead stray currents away from the equipment
b.minimize static electricity
c.provide an effective path for ground-fault current
d.minimize shock hazard - ✔✔2020 NEC: 100_Bonding Jumper, Main
The correct answer is: provide an effective path for ground-fault current
Which of the following determines the severity of an electric shock?I. the path taken by current through
bodyII. the length of time current flowsIII. the amount of current flowing
Select one:
a.II & III only
b.I & II only
c.I & III only
d.I, II & III
e.II only - ✔✔The correct answer is: I, II & III
Electricians must be concerned with height transitions between areas with different ___ heights.
Select one:
a.roof
b.ceiling
c.both a and b
d.neither a nor b - ✔✔The correct answer is: both a and b
As used in reference to construction drawing, CAD is an abbreviation for ___.
Select one:
a.Cylindrical Area Dimensions
,b.Computer Aided Drafting
c.Centered Air Diffuser
d.Copper or Aluminum Device - ✔✔The correct answer is: Computer Aided Drafting
BCES Panel LD is located in Main Electrical Room (D154). Conduits can be stubbed up, turned, and then
extended through the ___ wall to the required outlets.I. north II. east III. south IV. west
Select one:
a.I or II only
b.III or IV only
c.II or III only
d.any of these - ✔✔The correct answer is: I or II only
___ is a special moisture-resistant type of gypsum board attached to wall studs and used in damp areas,
such as in bathrooms.
Select one:
a.Durock®
b.Greenboard - ✔✔The correct answer is: Greenboard
On building project drawings, references made to above finished floor and above floor are equivalent.
Select one:
a.True
b.False - ✔✔The correct answer is: False
The wood used in BCES walls to provide substantial support for wall-hung equipment and millwork is
fire-treated lumber.
Select one:
a.True
b.False - ✔✔The correct answer is: True
,___ is a special cement-based type of board attached to wall studs and used in wet areas, such as in
bathrooms.
Select one:
a.Wonderboard®
b.Durock®
c.Hardibacker®
d.any of these - ✔✔The correct answer is: any of these
The conduit for the drinking fountains on the east side of BCES Corridor D130 can be installed straight
up from the box, through the stud wall behind the equipment.
Select one:
a.True
b.False - ✔✔As discussed in the curriculum manual, this is a chase-type, half wall, Type G. The conduit
must be routed to an adjacent wall.
The correct answer is: False
On the BCES plans, "SIM" is an abbreviation for ___.
Select one:
a.simulated
b.similar
c.striated imitation marble
d.scaled in metrics - ✔✔The correct answer is: similar
On architectural plans, "O.H." is an abbreviation for ___. O.H. typically appears adjacent to detail
callouts.
Select one:
a.or higher
b.opposite hand
c.overhead
, d.on hold - ✔✔@ Rm A112 Detail 4 on Dwg A8.1 shows O.H.This detail shows 24"-deep millwork on the
left and 30"-deep millwork on the right For Rm A112 the millwork detail is Opposite Hand (mirror image)
because the deeper portion is on the left.
The correct answer is: opposite hand
Revisions to construction drawings are indicated by ___.
Select one:
a.a numbered, triangular symbol near the revised area or item
b."clouding" around the revised area or item
c.both a and b
d.neither a nor b - ✔✔both a and b
As a consideration for the receptacle outlet box installation in BCES Room B114, the stud-to-finish
dimension is ___.
Select one:
a.1"
b.5/8"
c.17/8"
d.11/4"
e.11/8" - ✔✔5/8" rock + 3/8" for tile = 1"
The correct answer is: 1"
The walls in BCES Mechanical Room C109 are ___.
Select one:
a.painted CMUs
b.painted sheetrock
c.VWC over sheetrock
d.none of these - ✔✔The correct answer is: painted sheetrock
BCES Room D136 has a(n) ___ ceiling.
