2020 NEC Part 1 Quiz
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Question 1 of 20
1. Question
The National Electric Code (NEC) is updated _________?
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Every three years, the National Electrical Code® (NEC®) is revised and expanded. Initially the NFPA® received 3,730 public suggestions for changes, which resulted in 1,400 first revisions. There were 1,930 public comments submitted in response to these 1,400 first revisions, resulting in 635 second revisions.
Changes included editorial clarification, expanded requirements, new requirements, deleted requirements, and the relocation of other requirements. Nine new articles were proposed, and four new articles were added to the 2020 NEC. With the fast pace of technology, it’s more important than ever for anyone participating in the electrical industry to get up to speed with all the changes. -
Question 2 of 20
2. Question
What of the following was added to the scope of the 2020 NEC?
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90.2(A) Scope
(A) Covered. This Code covers the installation and removal of electrical conductors, equipment, and raceways; signaling and communications conductors, equipment, and raceways; and optical fiber cables for the following:
(1) Public and private premises, including buildings, structures, mobile homes, recreational vehicles, and floating buildings
(2) Yards, lots, parking lots, carnivals, and industrial substations
(3) Installations of conductors and equipment that connect to the supply of electricity
(4) Installations used by the electric utility, such as office buildings, warehouses, garages, machine shops, and recreational buildings, that are not an integral part of a generating plant, substation, or control center
(5) Installations supplying shore power to ships and watercraft in marinas and boatyards, including monitoring of leakage current
(6) Installations used to export electric power from vehicles to premises wiring or for bidirectional current flow -
Question 3 of 20
3. Question
What is the definition of Equipotential Plane?
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Equipotential Plane.
An area where wire mesh or other conductive elements are on, embedded in, or placed under the walk surface within 75 mm (3 in.), bonded to all metal structures and fixed nonelectrical equipment that may become energized, and connected to the electrical grounding system to prevent a difference in voltage from developing within the plane.Accessible conductive parts bonded together to reduce voltage gradients in a designated area. (CMP-17) -
Question 4 of 20
4. Question
Why was code updated for Terminal Connection Torque updated?
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Reason for Change:
Revisions were made to place the proper emphasis on achieving the required torqueing values rather than the tool used to achieve such values.
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Question 5 of 20
5. Question
A new rule was added to prohibit an open equipment door from obstructing the entry/egress, what are they referring too?
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110.26 Spaces About Electrical Equipment.
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Question 6 of 20
6. Question
What is the mandatory color of a grounded conductor’s terminal on a receptacle?
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Question 7 of 20
7. Question
What code changed affected 250 volt receptacles in a dwelling unit laundry room?
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Question 8 of 20
8. Question
Which of the following outdoor outlets require GFCI protection?
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210.8 Ground-Fault Circuit-Interrupter Protection for Personnel.
(A) Dwelling Units. All 125-volt through 250-volt,single-phase, 15- and 20-amperereceptacles installed in the locations specified in 210.8(A)(1) through(10)(11) and supplied by single-phase branch circuits rated 150 volts or less to ground shall have groundfault circuit-interrupter protection for personnel.
(1) Bathrooms
(2) Garages, and also accessory buildings that have a floor located at or below grade level not intended as habitable rooms and limited to storage areas, work areas, and areas of similar use
(3) Outdoors -
Question 9 of 20
9. Question
Which of the following equipment cannot be reconditioned?
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Question 10 of 20
10. Question
Regarding lighting loads, which of the following is false?
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Question 11 of 20
11. Question
A new requirement was added to require __________ on all services at dwelling units.
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Question 12 of 20
12. Question
A new requirement added to require a/an __________ at a readily accessible outdoor location for dwelling units.
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Question 13 of 20
13. Question
Article 242 was newly added and pertains to what?
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Question 14 of 20
14. Question
What is the largest sized bonding jumper used to bond metal water piping systems?
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250.104 Bonding of Piping Systems and Exposed Structural Metal.
(A) Metal Water Piping. The metal water piping system shall be bonded as required in 250.104(A) (1), (A)(2), or (A)(3)
of this section. (1) General. Metal water piping system(s) installed in or attached to a building or structure shall be bonded to any of the following:
(1) Service equipment enclosure
(2) Grounded conductor at the service
(3) Grounding electrode conductor, if of sufficient size
(4) One or more grounding electrodes used, if the grounding electrode conductor or bonding jumper to the grounding electrode is of sufficient size The bonding jumper(s) shall be installed in accordance with 250.64(A), 250.64(B), and 250.64(E). The points of attachment of the bonding jumper(s) shall be accessible. The bonding jumper(s) shall be sized in accordance with Table 250.102(C)(1) except that it shall not be required to be larger than 3/0 copper or 250 kcmil aluminum or copper-clad aluminum and except as permitted in 250.104(A) (2) and 250.104(A)(3). -
Question 15 of 20
15. Question
Metal enclosures can now be used to?
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250.109 Metal Enclosures
Metal enclosures shall be permitted to be used to connect bonding jumpers or equipment grounding conductors, or both, together to become a part of an effective ground-fault current path. Metal covers and metal fittings attached to these metal enclosures shall be considered as being connected to bonding jumpers or equipment grounding conductors, or both.
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Question 16 of 20
16. Question
For systems over 1000 volts, which type of sign needs to conspicuously posted?
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300.45
WarningDanger Signs.WarningDanger signs shall be conspicuously posted at points of access to conductors in all conduit raceway systems and cable systems. The warning sign(s) shallbe legible and permanent and shall carry the following wordingmeet the requirements in 110.21(B), shall be readily visible, and shall state the following:DANGER—HIGH VOLTAGE—KEEP OUT
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Question 17 of 20
17. Question
Nonmetallic-sheathed cable is required to not exceed this length from cable entry to first cable support?
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Question 18 of 20
18. Question
What type of rigid metal conduit can be used in all atmospheric conditions and occupancies?
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Question 19 of 20
19. Question
__________ shall be permitted in cable tray only when installed in accordance with 392.10(B)(1).
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Question 20 of 20
20. Question
What is the purpose of an expansion splice plate?
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