19th Edition
ISBN: 9781337516549


19th Edition
ISBN: 9781337516549


Chapter 4, Problem 8R
Textbook Problem

Indicate the allowable ampacity of the following Type THHN (copper) conductors. Refer to Table 310.15(B)(16).

  1. a. 14 AWG __________ amperes
  2. b. 12 AWG __________ amperes
  3. c. 10 AWG __________ amperes
  4. d. 8 AWG __________ amperes
  5. e. 6 AWG __________ amperes
  6. f. 4 AWG __________ amperes

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Chapter 4 Solutions

Ch. 4 - For nonmetallic-sheathed cable, may the...Ch. 4 - What size equipment grounding conductor is used...Ch. 4 - Under what condition may nonmetallic-sheathed...Ch. 4 - a. What is the maximum distance permitted between...Ch. 4 - What is the difference between Type AC and Type...Ch. 4 - Note: Refer to the Code or the plans where...Ch. 4 - When Type AC cable is used, what protection is...Ch. 4 - What protection must be provided when installing a...Ch. 4 - For installing directly in a concrete slab,...Ch. 4 - Circle the correct answer to the following...Ch. 4 - When running Type NM cable through a bored hole in...Ch. 4 - Where is the main service-entrance panel located...Ch. 4 - Is it permitted to use flexible metal conduit over...Ch. 4 - Liquidtight flexible metal conduit may serve as a...Ch. 4 - It is permissible for an electrician to connect...Ch. 4 - Terminals of switches and receptacles marked...Ch. 4 - Wire connectors marked AL/CU are suitable for use...Ch. 4 - A wire connector bearing no marking or reference...Ch. 4 - When Type NM cable is run through a floor, it must...Ch. 4 - When nonmetallic-sheathed cables are bunched or...Ch. 4 - In diagrams A and B, nonmetallic-sheathed cable is...Ch. 4 - The marking on the outer jacket of a...Ch. 4 - A 120-volt branch circuit supplies a resistive...Ch. 4 - In problem 35, it is desired to keep the voltage...Ch. 4 - NEC 215.2, 220.61, 230.42, and 310.15(B)(7) state...Ch. 4 - The allowable ampacity of a 4 AWG THHN from Table...Ch. 4 - If, because of some obstruction in a wall space,...Ch. 4 - The recessed fluorescent luminaires installed in...Ch. 4 - Flexible liquidtight metal conduit will be used to...Ch. 4 - What size overcurrent device protects the...Ch. 4 - May the 20-ampere small-appliance branch circuits...Ch. 4 - A 30-ampere branch circuit is installed for an...Ch. 4 - In many areas, metal framing members are being...Ch. 4 - Are set screwtype connectors permitted to be used...Ch. 4 - Most armored cable today has 90C conductors. What...Ch. 4 - If you saw two different types of SE cables, how...Ch. 4 - Circle the correct answer defining the type of...

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