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NEC 2011 Handbook Section 110
Section 110 - Requirements for Electrical Installations
21
Electrical Engineering
Undergraduate 2
01/13/2011

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Term
What are the 5 sections (I,II,III,IV,V) of the (R.E.I.)?
Definition
I. General
II. 600V, Nominal or Less
III. Over 600V, Nominal
IV. Tunnel installations over 600V Nominal.
V. Manholes and other electrical enclosures intended for personnel entry, all V's.
Term
In the R.E.I. section (I) is "General". Define General.
Definition
General requirements for the examination and approval, installation and use, access to and spaces about electrical conductors and equipment; enclosures intended for personnel entry; and tunnel installations.
Term
110.2 - Approval, what does this mean?
Definition
The conductors and equipment required or permitted shall be acceptable only if approved. Approval occurs when the conductors and equipment are acceptable to the Authority Having Jurisdiction.
Term
110.6 - Conductor Sizes. Conductor (wire) Sizing is expressed in?
Definition
(AWG) American Wire Gauge.
Term
110.7 - Wiring Integrity. What is meant by "Wiring Integrity"?
Definition
Completed wiring installations "shall be" (= mandatory rules) free from short circuits, ground faults, or any connections to ground other than as required or permitted elsewhere in the Code.
Term
110.14 - Electrical Connections.
Definition
Stripping wire, connecting, etc; done properly.
Term
What does article 110.16 cover?
Definition
Arc-Flash Hazard Warning
Term
In 110.21 - Marking, what to main types of information "shall be" on all electrical equipment?
Definition
Manufacturer's identifying information and also electrical rating data.
Term
Article 110.24 - Available Fault Current. What are the 2 mandatory rules?
Definition
A. Field Marking
B. Modifications
Term
110.24 - Available Fault Current. What is "Field Marking"
Definition
other than dwelling units shall be legibly marked and dated.
Term
110.24 - Available Fault Current. What is "Modifications"?
Definition
Equipment must have an interrupting rating or short-circuit current rating equal to or greater than fault current if it is to be used safely.
Term
Article 110.26 - Spaces About Electrical Equipment; General Rule is?
Definition
Accessibility = 3' in front of panel doors.
Term
Article 110.26 - Spaces About Electrical Equipment; Headroom?
Definition
Term
Article 110.26 - Spaces About Electrical Equipment; Enclosure door openings?
Definition
Term
Article 110.27 - Guarding of Live Parts. What are A, B, and C?
Definition
A. Accidental Contact
B. Prevent Physical Contact
C. Warning Signs
Term
Article 110.28?
Definition
Enclosure types
Term
Table 110.28?
Definition
Enclosure selection.
Term
Who is N.E.M.A.?
Definition
National Electrical Manufacturer's Association
Term
Section III?
Definition
Over 600V, Nominal
Term
Section IV?
Definition
Tunnel Installations over 600V, Nominal
Term
Section V?
Definition
Manholes and Other Electrical Enclosures Intended for Personnel Entry, All Voltages
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