Title: Box Fill
Course: Industrial Wiring (IC 104-IC 104) > Section: Assessments

Q: A room of 90 degrees F has a conduit with 15 cables in it, the cables are 10 Ga. copper with a THHN insulation, what is the ampacity of the cable?
A: 19.2A

Q: At what temperature can we use aluminum TW type insulated cable at?
- 60 degrees C
- 90 degrees C
- 75 degrees C
A: 60 degrees C

Q: How many 12 Ga. wires will go into 21.5 cu in box?
A: 9

Q: How many 14 Ga. conductors will a device box that is 3" x 2" x 2 ¼" hold?
A: 5

Q: How many 6 Ga. wire will fit into a 4 11/16"x 1 ¼" square box?
A: 5

Q: I have a 3" x 2" x 1 ½" device box and I am running 4 - 14 Ga. wires into it. Will that be acceptable?
- Yes
- No
A: Yes

Q: The cu in of a 4" x 1 ½" square box is
A: 21.0

Q: What gauge of aluminum wire would we need to hold a 100 Amps of current in a room of 30 degrees C?
- 1/0
- 1
- 2
- 3
A: 1/0

Q: What is the correction factor for a cable that is in a room of 37 degrees C, that has a insulation rating of 75 degrees C?
A: .88

Q: Which of these insulation types is rated for 167 degrees F?
- UF
- THWN-2
- RHW
- XHH
A: UF