Module 9 - Conductors and Cables
Using NEC Table 402.5, the allowable ampacity of No. 14 AWG fixture wire is __________.
17 amps
Using NEC Table 310.15(B)(16), the ampacity of a No. 6 AWG, Type UF copper cable is __________.
55 amps
According to NEC Chapter 9, Table 8, No. 10 AWG wiring has __________.
7 strands
The temperature rating of service-entrance cable when the cable is not marked otherwise is __________.
75 degrees Celsius (167 degrees Fahrenheit)
Mouse
A cylinder of foam rubber that fits inside the conduit and is then propelled by compressed air or vacuumed through the conduit run, pulling a line or tape.
Wire grip
A device used to link pulling rope to cable during a pull.
Fish tape
A hand device used to pull a wire through a conduit run.
The difference between AC cable and MC cable is __________.
AC cable has fire-retardant paper wraps on individual conductors; MC cable does not
A conductor's __________ is the current the conductor can carry continuously without exceeding it temperature rating.
Ampacity
On a cable puller, __________ is the part on which the pulling rope is wrapped and pulled.
Capstan
A _____ _____ is a manually operated device that is used to pull a wire through conduit.
Fish tape
Which of the following is true when pulling conductors?
If a pull is expected to be difficult, a pull line should be used rather than a fish tape.
Composed of foam rubber, __________ fits inside a piece of conduit and is propelled by compressed air or vacuumed through the conduit run, pulling a line or tape.
Mouse
The ampacity ratings of conductors can be found in __________.
NEC 310.15(B)(16) through 310.15(B)(21)
When used as a service-entrance cable, Type SE cable must be installed as specified in __________.
NEC Article 230
To determine the ampacity of copper conductors where conductors are usedas a single conductor in free air at ambient temperatures of 30 degree celcius, use__________.
NEC Table 310.15(B)(17)
The maximum size solid wire that should be terminated in pull boxes and disconnects is __________.
No. 10
What are the colors of insulation on the conductors for a three-conductor NM cable?
One white or gray, one red, on black, and a grounding conductor
Which of the following is the most common type of jacket?
Polyethylene
A type of thermoset insulation is __________.
RHW
Telephone wiring in a plenum space is likely to use __________.
Teflon insulation
What service conductor may be bare, green, or green with yellow stripe?
The grounding conductor of a multi-conductor cable
Ampacity
The maximum current in amperes a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
Capstan
The turning drum of the cable puller on which the rope is wrapped and pulled.
What letter must be included in the marking of a conductor if it is to be used in a wet, outdoor application?
W
During a pull, cable may be attached to the pulling rope using a _____ _____.
Wire grip
Large conductors are likely to require the use of __________.
electrically driven power pullers
If a conductor has a low resistance, it __________.
has a high conductivity
Polyethylene (PE) is used primarily for __________.
insulation of control and communication wiring
To prevent unwanted ground loops, instrumentation cable shielding is __________.
not grounded at both ends of the wire
Ideally, a pull should be made in __________.
one continuous operation
In some cases, fixture wires may be used for __________.
signaling wiring
Type USE cable can be used for __________.
underground installation including direct burial
Compact stranding is used __________.
with aluminum conductors