Commercial and industrial wiring
chapt. 7 Exam Questions & Answers
(Grade A+)
The maximum amount of bend angles between pull points in a
conduit run cannot exceed_____. -
correct answer ✅360 degrees
A ___ is a conduit fitting that is used to couple boxes back to back -
correct answer ✅Chase nipple
A _____ is a flush or surface mounted enclosure used for housing
electrical components, devices, and conductor connections. -
correct answer ✅Cabinet
If project documentation is not available, the standard mounting
height used for receptacles is____", and for wall switches the
height is ___". -
correct answer ✅18, 48
____ Are used to ground metal components and devices to protect
personnel from electrical shock. -
correct answer ✅Bonding jumpers
, Commercial and industrial wiring
chapt. 7 Exam Questions & Answers
(Grade A+)
____ Is a fill volume assigned to a conductor, clamp, support sitting,
or device in a box as specified by the NEC -
correct answer ✅Volume allowance
For an angle pull, the minimum size pull box or junction box is
determined by multiplying the largest conduit trade size dimension
by____ and adding the trade size of each of the other conduits to
get the minimum pull box or junction box dimensions -
correct answer ✅Six
A ____ enclosure is an enclosure in which a beating rain cannot
interfere with the operation of the apparatus or result in wetting of
live parts in wiring within the enclosure -
correct answer ✅Rain proof
A utility box is an electrical box with rounded corners that is
commonly referred to as a ____ box. -
correct answer ✅Handy
A power panel uses ____% or less of it overcurrent devices to
supply lighting an appliance branch circuits. -
correct answer ✅10
chapt. 7 Exam Questions & Answers
(Grade A+)
The maximum amount of bend angles between pull points in a
conduit run cannot exceed_____. -
correct answer ✅360 degrees
A ___ is a conduit fitting that is used to couple boxes back to back -
correct answer ✅Chase nipple
A _____ is a flush or surface mounted enclosure used for housing
electrical components, devices, and conductor connections. -
correct answer ✅Cabinet
If project documentation is not available, the standard mounting
height used for receptacles is____", and for wall switches the
height is ___". -
correct answer ✅18, 48
____ Are used to ground metal components and devices to protect
personnel from electrical shock. -
correct answer ✅Bonding jumpers
, Commercial and industrial wiring
chapt. 7 Exam Questions & Answers
(Grade A+)
____ Is a fill volume assigned to a conductor, clamp, support sitting,
or device in a box as specified by the NEC -
correct answer ✅Volume allowance
For an angle pull, the minimum size pull box or junction box is
determined by multiplying the largest conduit trade size dimension
by____ and adding the trade size of each of the other conduits to
get the minimum pull box or junction box dimensions -
correct answer ✅Six
A ____ enclosure is an enclosure in which a beating rain cannot
interfere with the operation of the apparatus or result in wetting of
live parts in wiring within the enclosure -
correct answer ✅Rain proof
A utility box is an electrical box with rounded corners that is
commonly referred to as a ____ box. -
correct answer ✅Handy
A power panel uses ____% or less of it overcurrent devices to
supply lighting an appliance branch circuits. -
correct answer ✅10
