Article 310. Conductors for general wiring
The unbalanced load
A neutral conductor that carries only ______ current shall not be required to be counted as a current carrying conductor.
Three
Adjustment factors shall not apply to type AC or MC cable that have not more than ___ , and are #22 AWG.
Sunlight resistant
All cables installed on a roof (in/out of conduit ) must be identified as ______.
24 inches
Conductor derating factors shall not apply in conduit nipples having a length not exceeding ____ .
necessary
Conductors for TVSS shall not be longer than ____ .
25°F
Conduits installed on rooftops 1 to3 feet from the surface of the roof shall have ____ added to the ambient temperature.
30°F
Conduits installed on rooftops 3 1/2 to 12 inches from the surface of the roof shall have ____ added to the ambient temperature
40°F
Conduits installed on rooftops in direct sunlight shall have ____ added to the ambient temperature when it is a half inch to 3 1/2 inches from rooftop.
changes
If the ambient temperature for conductors is above 86°F and below 78°F the conductor ampacity _____ .
#1/0 AWG
In general, The minimum size conductor permitted for use in parallel installations is _____
40 inches
Other markings besides size (AWG) shall be repeated at intervals not exceeding ____
24 inches
The AWG size marking shall be repeated at intervals not exceeding ___ on wire.
Heat resistant 167 degress
The H in THW wiring stands for ____
High Heat resistant !94 degress
The HH in THHN wiring stands for ___
Nylon coated for resistance to oil and gasoline
The N in THHN wiring stands for ____
Thermoplatic
The T in THHN wire stands for___
Wet
The W in TWN wiring stands for___
Flame retardant insulation
The X in XHHW wiring stands for ____
# 10 AWG
The largest solid conductor allowed in a raceway is sized _____.
#14 AWG
The minimum size conductor permitted for branch circuits on the 600 V is ____
86°F
The standard temperature upon which conductors are rated on the ambient temperature is _____
70%
When Seven to nine current carrying conductors are running the same conduit the impasse city of each conductor is adjusted _____ .
shall not
When determining the number of current carrying conductors ,a grounding or bonding conductor _____ be counted when applying adjustment factors.
#8 AWG
When installed in raceways ,conductors ____and larger shall be stranded
60°F
Where conductors are installed in conduits exposed to direct sunlight on rooftops, the ambient temperature shall be increased by _____ when conduits are 1/2 inch from rooftop.
80%
Where four to six current carrying conductors are run in the same conduit ,the ampacity of each conductor shall be adjusted by a factor of ____
