Per NEC 110.26(A)(1), what is the minimum depth of working space in front of electrical equipment operating at 300 volts where exposed live parts are on one side and grounded parts (such as concrete walls) are on the other side (Condition 2)?
General Requirements And Definitions
Question · Medium
14 on 15, 12 on 20, 10 on 30
Short
Why verify permits before an electrical inspection?
General Requirements
Flashcard
According to NEC Article 100, the term 'continuous load' is defined as a load where the maximum current is expected to continue for at least how long?
Question · Easy
Equipment or materials named in a published evaluation that says they meet identified standards or were tested for a specified purpose.
General requirements
Guess the Term
Introduction & Exam Overview
1.1 Current Exam Facts
Study guide
Cheat sheet
Per NEC 110.26(E), what is the minimum required headroom of working space about service equipment, switchboards, panelboards, and motor control centers in commercial occupancies?
Read the clue and guess the term in 6 tries.
Game
What should be available on site for an E2 inspection?
NEC 110.26(C)(2) requires how many entrances to and egress from the working space for large equipment rated 1200 amperes or more and over 6 feet wide?
Kind of parts that are energized conductive components.
Per NEC 110.14(C)(1), conductors with a temperature rating higher than the termination rating (for example 90°C conductors terminating on 75°C-rated equipment) must have their ampacity determined based on which temperature column of Table 310.16?
Question · Hard
What does a listing or label tell an inspector?
Per NEC 110.22(A), each disconnecting means must be legibly marked to indicate its purpose unless located and arranged so the purpose is evident. What additional marking requirement applies in 110.22?
The earth itself, which the code distinguishes from being connected to it.
Services
1.2 Exam Format, Scheduling & Logistics
Per NEC 110.26(A)(3), the minimum width of working space in front of electrical equipment shall be the width of the equipment or how many inches, whichever is greater?
Swap tiles to line up three of the same term.
Term Match
What conductor details should be checked in the field?
NEC 110.24(A) requires service equipment in other than dwelling units to be legibly field-marked with the maximum available fault current, the date the calculation was performed, and to meet which additional requirement?
Abbreviation for the wire sized by Table 250.66 from the largest service-entrance set.
Per NEC 210.19(A)(1), branch circuit conductors must have an ampacity of not less than the maximum load to be served, and for continuous loads plus noncontinuous loads, the minimum branch circuit conductor size (before derating) must be at least what percentage of the continuous load plus 100% of the noncontinuous load?
Branch Circuits Feeders And Services
Why do terminations matter when inspecting conductors?
A commercial lighting branch circuit has a continuous load of 16 amperes and no noncontinuous load. What is the minimum branch circuit OCPD rating per NEC 210.20(A)?
Abbreviation for the listed system at docking facilities that must be rated not more than 100 milliamperes.
Special occupancies
1.3 Study Strategy & Timeline
Per NEC 220.12, the general lighting load for an office building (other than banks and offices where the actual receptacle load is known) is calculated at how many volt-amperes per square foot?
Flip two cards at a time to find matching terms.
Term Pairs
What is the inspector's starting point for a service-size review?
Per NEC 220.14(I), general-use receptacle outlets in commercial occupancies (other than dwelling units) are calculated at how many volt-amperes per receptacle outlet?
Circuit conductors between the service equipment or a separately derived source and the final branch-circuit overcurrent device.
Distribution rules
Per NEC 220.44, a feeder supplying general-use receptacle loads in a nondwelling occupancy may apply which demand factor to the portion of the receptacle load that exceeds 10 kVA?
Why are service-conductor clearances inspected?
Per NEC 230.79, the minimum rating of the service disconnecting means for a one-family dwelling is 100 amperes, 3-wire. What is the minimum service disconnect rating for all other installations per NEC 230.79(D)?
Kind of circuit whose conductors run from the final overcurrent device to the outlets.
1.4 NEC Navigation & Open-Book Tactics
Per NEC 230.71(A), the maximum number of service disconnects permitted for each service (grouped in one location) is how many?
Find five hidden terms in a grid of letters.
Term Search
What is the role of service equipment?
Per NEC 230.24(B), service-drop conductors passing over areas accessible to pedestrians only (not vehicles) must have a minimum vertical clearance of what above the walking surface at 120/240 volts?
Abbreviation for a protective device that de-energizes a run when leaking current to earth exceeds the Class A threshold.
Per NEC 230.24(B)(4), what is the minimum vertical clearance required for service-drop conductors passing over public streets, alleys, roads, or parking areas subject to truck traffic?
What is a grounding electrode system?
Per NEC 215.2(A)(1), feeder conductor ampacity before derating must not be less than the noncontinuous load plus what percentage of the continuous load?
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