Chapter 3 wiring Methods And Materials Flashcards
The minimum distance in the edge of a stud must be from the edge of a hole for NM cable is
300.4A2
Inch and a quarter
When direct burial exits the ground what shall it be enclosed in
300.5D 1-4
Raceway 
At what rated voltage does direct burial cable have to be shielded
310.10 F
2,000v
What is the smallest size conductor you can run in parallel
310.10h1
1/0
What is the minimum size wire I need to supply a 100 amp single phase 3 wire main service on a mobile home
4 awg copper
310.15b7
What is the overcurrent protection for eight number 12 THHN conductors in a half inch pipe
310.15 B3 a
20 a
A single-family dwelling has a 100 amp service. What size feeder will be required to supply a 75 amp electric space heater and a 25 AMP air conditioner
310.15 B 16
Number 2 copper
What is the minimum size THW conductor that can be used to supply a 200 amp a single phase commercial building
310.15 B 16
3/0 copper
What type of conductor is rated for direct burial
310.104A
340.10
UF
When using a round box where conductors Orkin nectars requiring the use of lock nuts or bushings are to be connected to a part of the box can they be connected
314.2
Side of the box
Type NM cable shall be approved for installing under the lower edges of a joist in crawlspace is if the wire is at least 3-_____awg
8
 334.15 C
Or 2-#6
What is the required free space in a junction box for a number 10 conductor
314.16 B
2 1/2 in.³
What is the maximum number of number 14 conductors allowed in a 4” x 2 in an 8 inch metal octagon trade size box
314.16 A
10

Type NM cable shall be secured how many inches from a non-metallic box if there is no clamp
314.17 C
8 inches
A fixture box Shall be independently supported if the fixture weighs more than how many pounds
314.27 a2
50 pounds
Floor boxes must be made of what
UL listed
What is the maximum distance from a panel that a type M I cable must be secured
332.30
6 feet
What is the temperature rating for the conductor of type NM cable
334.80
60°C
What type of cable is not approved for service entrance cable 
340.12
UF
10 feet of Equipment grounding conductor cannot be made of what
348.20A
250.118.7b
FMC
What is the maximum distance between supports for a 1 inch rigid PVC
352.30
3 feet
What is the expansion rate of 250 feet of PVC that goes from a temperature change of -20 Fahrenheit to 80 Fahrenheit
352.44
10.15
Type RTRC shall be permitted to be unsupported where the raceway is not more than______ Long and remains in unbroken links and terminated in an outlet box
355.30a
3 feet
What is the maximum number of conductors allowed in an auxiliary gutter
366.22 a
30
What is found in chapter 3
Anything dealing with raceways; distance between support, termination point, Installation is found here.
Ampacity tables
393 Low voltage suspended ceiling power distribution system
