WorksheetsHomework 3 - Electrical Code and Safety Quiz
Total questions: 36
Worksheet time: 3hrs 0mins
The NEC states that the following metal piping system shall be bonded including metal water piping and metal gas piping. Code
True
False
Fire pumps connection to the electric utility service shall be located ahead of but not within the same cabinet, enclosure, vertical switchgear section or vertical switch board section as the service disconnecting means. Code
True
False
Allowable ampacity for flexible cords and cables are found in table
Table 400.4
Table 402.3
Table 400.5(A)(1)
Table 402.5
Motor fuel dispensing facilities are found in which article?
Article 516
Article 514
Article 515
Article 513
A main circuit breaker mounted inside of a cabinet shall have the center of the grip of its operating handle in its highest position not more than what distance above the floor.
1.5m(5ft)
1.8m(6ft)
2.0m(6ft7in)
2.5m(8ft)
Where conduits or other raceways enter an open bottom gear, switch board or floor-standing panel board the rise of the conduit and end fitting shall not exceed ______ inches above the bottom of the enclosure.
3 inches
2 inches
2 ¹∕₂ inches
1 ½ inches
Type AC cable shall be supported and secured with-in ____ inches of every box.
3 inches
6 inches
12 inches
24 inches
The grounding electrode conductor connection shall be connected at the
Non-fused standard meter socket
In a sub-panel
Service disconnecting means
the non-fused CT cabinet
Which one of the following statements regarding calculating the feeder load for fixed appliances in dwelling units is true?
A 70 percent demand factor may be used where there are three appliances
A 75 percent demand factor may be used where there are more than three appliances.
An 80 percent demand factor is required to be used where there are four or more appliances.
A 100 percent demand factor is required regardless of the number of appliances
An equipment-bonding jumper is permitted to be installed on the outside of a raceway or enclosure, but it shall not exceed _____ ft in length.
3 ft
6 ft
18 ft
24 ft
Electrified truck parking spaces are found in which article?
Article 620
Article 626
Article 630
Article 625
Electrolytic cells are found in which article?
Article 668
Article 665
Article 669
Article 670
There shall be outdoor receptacles, accessible at grade level, for single-family dwelling. How many shall be installed at each dwelling unit?
1 receptacle
2 receptacles
3 receptacles
4 receptacles
Network powered broadband communications systems grounding and bonding electrode conductor shall not be required to exceed AWG.
#6
#8
#4
#14
Nonmetallic boxes shall comply with table 314.16(A)
True
False
Cable substitution for remote control, signaling, and power-limited circuits are found in which table?
Table 725.31(A)
Table 725.154(A)
Table 725.121
Table 725.179
Maximum rating or setting of overcurrent protection for transformers 1000 volts and less are found in table
Table 450.3(A)
Table 450.3(B)
Table 450.6(B)
Table 450.11(B)
Maximum number of compact conductors in a liquidtight flexible nonmetallic conduit type LFNC-A are found in
Annex C Table 3
Annex C Table 6
Annex C Table 2
Annex C Table 5
Which of the following completed statements would not be in compliance with-in code for kitchen countertop receptacle to be installed
So that no point along the wall line is more than 24 in from a receptacle
At each wall counter space 12 inches or wider
Not more than 12 inches below the counter top
Receptacle shall not be located above 18 inch above the countertop
A feeder, for four three-phase motors, is installed in rigid nonmetallic conduit. The feeder consists of one set of 2/0 AWG THHN aluminum conductors protected by a 150-ampere circuit breaker. What is the minimum size aluminum equipment-grounding conductor required?
No. 1 AWG aluminum
No. 2 AWG aluminum
No. 3 AWG aluminum
No. 4 AWG aluminum
The basement of a dwelling unit is completely finished off into habitable rooms; except for an 8 foot square area which contains the furnace and water heater. A duplex receptacle is to be installed in this area. Which of the following best describes code requirements for installation of this receptacle?
It is not permitted to be installed in this area
It is required to be installed and must have GFCI protection
It is required but does not require GFCI protection
The code does not cover mechanical rooms in basements
The equipotential bonding planes for an agricultural building shall not be smaller than ____ AWG.
#2 copper
#3 copper
#6 copper
#8 copper
Fixed outdoor electrical deicing and snow melting equipment shall not be a continuous load.
True
False
A duplex receptacle, in which the equipment grounding terminal is insulated from the receptacle mounting means (isolated ground receptacle), is installed in a building in which the electrical supply is from another building on the same property. The isolated equipment grounding conductor for this receptacle is to be connected where?
A ground rod at the receptacle
The ground rod at the service equipment in the second building
The ground bar at the second building panel
The equipment ground bar in the service at the first building
A farm building for livestock shall have a bonding equipotential planes install in concrete floors that is accessible to livestock. This equipotential plans shall be connected to a copper wire. This wire shall be ____.
Stranded
Solid
What size octagon box is required for 5- #12 and 4- #14 conductors?
1 ¼″
I ½”
2”
2 ⅛“
The minimum service required in one-family dwelling is ____ amperes.
30
60
100
None of these
In no case shall the point of attachment of the overhead service conductors to a building be less than ____ feet above finished grade.
6
8
10
12
In a grounded system the grounding electrode conductor shall be connected to the following ______
I. at any accessible point from the load end of the overhead service conductor, service drop, underground service conductor or service lateral.
II. Including the terminal to which the grounded service Conductor is connected at the service disconnecting means.
I only
II only
Both I and II
Neither I nor II
A transformer case doesn't need to be grounded if _____
I. inside a fenced enclosure.
II. Mounted 12 feet up a wooden pole.
I only
II only
Both I and II
Neither I nor II
All electric equipment used with storable swimming pools shall be protected by
Ground-fault circuit-interrupters
Fuses only
Breakers only
Double insulation
A 240 volt single-phase room air conditioner shall be considered as a single motor unit of its rating is not more than ____ amps.
20
30
40
50
The disconnecting means shall be within ____ of the sign or outline lighting which it controls.
Sight
50ft
10ft
25ft
A transformer vault ventilation opening shall be located ____ from doors, Windows, fire escapes and combustible material.
3 ft
4 ft
4 ½ ft
As far away as possible
Which of the following shall be provided where necessary to ensure electrical continuity?
Grounding
Bonding
Connector
Controller
