Unit 13 - Conductors
Aluminum wire
1. Conductor made of aluminum.
Dry and wet locations; suitable for burial.
2. Under ground feeder and branch circuit
American Wire Gauge (AWG)
3. A series of specified diameters and thicknesses established as a standard in the United States; also known as Brown and Sharp gauge (B and S gauge).
Bare Conductor
4. A conductor having no covering or electrical insulation whatsoever.
Color coding
7. Assigning colors to conductors based on their uses.
Cooper-clad aluminum
8. Aluminum conductor with an outer coating of cooper metallurgically bonded to the aluminum core.
Copper wire
9. Conductor made of copper.
List the three conductors commonly found in electrical wiring.
A. Copper B. Aluminum C. Copper-Clad Aluminum
List the six factors that determine type and size of conductors.
A. Full load of amperes B. Number of conductors C. Type of load served D. Length of run E. Ambient temperature F. Voltage
True or false? Are made with magnetic screwdriver
False
120/240v, 3-phase with high leg conductor: Black, _________, Blue, and White.
Orange
208Y/120v: Black, ______, Blue, White
Red
True or false? Are tight
True
Ampacity
2. The current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
Cable
5. A factory assembly of two or more insulated conductors having an outer sheath of moisture-resistant, flame-retardant nonmetallic material.
Circular mils
6. The diameter of a conductor in thousandths of inches multiplied times itself.
Equipment grounding conductors shall be permitted to be ________, covered, or insulated.
Bare
120/240v, 1 phase: ________, Red, and White.
Black
True or false? Provide quick disconnect
False
True or false? Require no tools for installation?
False
True or false? Show bright terminal connection
False
From the following list, select which ones are true and false about characteristics of good connections.
From the following list, select which ones are true and false about characteristics of good connections.
True or False? Use approved devices and oxidation inhibitors when connection cooper to aluminum.
True
True or false? Are clean
True
True or false? Are strong
True
True or false? Provide full contact?
True
An insulated grounded conductor larger than #6 can be identified at the time of installation by a distinctive __________ marking at its termination. This marking shall encircle the conductor or insulation.
White
An insulated grounded conductor of #6 or smaller shall be identified by a continuous _______ or ___________ outer finish or by three continuous white stripes on other than green insulation along its entire length.
White, Gray
480Y,277v: Brown, Orange, _______, Gray.
Yellow
Type letter
16. Identification accepted by the trade in referring to particular types of insulation.
Grounding conductor
17. Conductors used to connect equipment or the grounded circuit of a wiring system to a grounding electrode or electrodes.
Cord
10. Two or more stranded conductors grouped together in flexible covering.
Covered
11. Conductor encased within material of composition or thickness not recognized by the NEC as electrical insulation.
Fish tape
12. Long tape of steel, nylon, or other material used to push or pull a conductor into a raceway.
Grounded conductor
13. A system or circuit conductor that is intentionally grounded (connected to the earth or some conductor that serves in place of the earth).
Insulated
14. Conductor encased within material of composition and thickness recognized by the NEC ans electrical insulation.
KCMil
15. On thousand circular mils
Complete statements about color codes for conductors. Write in the blanks, the color that best completes each description.
Complete statements about color codes for conductors. Write in the blanks, the color that best completes each description.
Complete the statements concerning the means of identifying "grounded" and equipment "grounding" conductors. Write in the blanks, the word(s) that best complete each statement.
Complete the statements concerning the means of identifying "grounded" and equipment "grounding" conductors. Write in the blanks, the word(s) that best complete each statement.
An insulated or covered conductor larger than #6 copper or aluminum shall be permitted, at the time of installation, to be permanently identified as an equipment grounding conductor at each end by coloring the exposed insulation or covering __________.
Green
Equipment grounding conductor: Bare or ________
Green
Match the letter designations for wire insulation with their characteristics.
Match the letter designations for wire insulation with their characteristics.
Match types of cable found in the electrical field with their uses.
Match types of cable found in the electrical field with their uses.
Grounded conductor: _________, or Gray.
White