Chapter 4 Review
In a raceway, the preference is to use stranded 10 AWG conductors because of their Blank and blank
Flexibility and handling and pulling
The diameters of conductors at usually given in a unit called a ......
MIL
The wire size used for a circuit depends on what
The maximum current to be carried.
What is the advantage of High- Temp conductors?
They can withstand the high temperatures found in attics and high temp climates.
Nonmetallic-sheathed cable is a factory assembly of two or more insulated conductors enclosed within an overall nonmetallic jacket.
This cable is most commonly available with two or three current carrying conductors.
Two wire cables contains one Black and one white conductor as well as one bare equipment grounding conductor.
Three wire cables contains one black, one white, and one red conductors as well as one bare equipment grounding conductor.
A mil is defined as.....
one thousandth of an inch
Ampacity depends on the
the conductors cross- sectional area, weather the conductor is copper or aluminum, and the type of insulation around the conductor.
Unless permitted elsewhere in the code, conductors blank and larger must be stranded where installed in a raceway.
8 AWG
The minimum conductor size for branch circuit wiring........ is
14 AWG
For residential wiring, sizes Blank, Blank, and Blank, conductors are generally solid when the wiring method is nonmetallic- sheathed cable or armored cable.
14,12,10 AWG
The copper and aluminum wire used in electrical installations is graded for size according to......
American Wire Gauge. (AWG)
The allowable ampacity values in the tables are valid where there are no more than 3 current carrying conductors in a raceway or cable and where the temperature does not exceed 86 degrees F ( 30 C). These are considered the blank for the conductors.
Conditions of use
All references for conductors are for what conductors unless otherwise stated.
Copper
Use wiring that bear the CO/ALR marking if they connect directly to the aluminum wire.
One such conductor is COPALUM, a compression (crimp) connector.
Each strand of wire acts as a what
Separate conducting unit
The higher the AWG number the the wire?
Smaller
Are cables permitted in raceways?
Yes
Mils squared are known as.....
circular mils
