Which part of the International Residential Code (IRC) contains the provisions for residential electrical systems?
General Requirements
Question · Easy
GFCI inspection
Short
FREE ICC E1 Residential Electrical Inspector Exam Guide 2026 (NEC 2020/2023, 60 Qs, Pass First Try)
Free 2026 ICC E1 Residential Electrical Inspector guide: 60 open-book questions, 2 hours, 75 scaled passing score, NEC content outline, NEC tabbing strategy, 6-week study plan, salary data.
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What is the scope of the ICC E1 exam in terms of occupancy type and electrical system size?
Flashcard
Per the IRC, the provisions of Part VIII - Electrical apply to the installation of electrical systems in which occupancies?
Electrical products shown in a published directory kept by an agency the authority having jurisdiction accepts.
General requirements
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Chapter 1: General Requirements
1.1 IRC Part VIII Structure and Project Administration
Study guide
Cheat sheet
Per the IRC, the minimum size copper grounding electrode conductor connected to a made electrode (such as a ground rod) is:
Question · Medium
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Game
Which IRC chapters contain the residential electrical provisions, and what code do they derive from?
Per the IRC, the minimum working space depth in front of a residential panelboard operating at 120/240 volts is:
Kind of parts that are energized conductive components.
Per the IRC, splices and joints in conductors shall be made only with:
14 on 15, 12 on 20, 10 on 30
What are the minimum working space dimensions in front of a residential electrical panel?
The minimum vertical clearance for open overhead service conductors passing over a residential driveway is:
Connected so that electrical continuity and conductivity are established.
Service equipment
1.2 Conductor Sizing and Splicing
Per the IRC, what is the minimum depth of a direct-buried UF cable installed in a trench below a 4-inch concrete slab with no vehicular traffic?
Question · Hard
Swap tiles to line up three of the same term.
Term Match
How must conductor splices be made under the IRC?
Which of the following is NOT an approved grounding electrode under the IRC?
Code term defined simply as the earth in the residential electrical definitions.
Per the IRC, electrical equipment shall be marked with the manufacturer's name, trademark, or other descriptive marking, and any other markings required by the code for:
What is the maximum size of the grounding electrode conductor (GEC) run to a made electrode, such as a single ground rod?
Per the IRC, what is the minimum size of a copper equipment grounding conductor in a 20-ampere branch circuit?
Raceway that holds up overhead service-drop conductors and must be strong enough or braced or guyed against their strain.
1.3 Clearances and Guarding
Per the IRC, what is the minimum size of service-entrance conductors for a 200-ampere single-phase dwelling service using copper conductors?
Services
Flip two cards at a time to find matching terms.
Term Pairs
What is the minimum rated ampacity of the service disconnecting means for a one-family dwelling?
Per the IRC, the service disconnecting means for a one-family dwelling shall have a rating not less than:
Conductors that run from service equipment, or another supply source, to the final branch-circuit overcurrent device.
Loads and ratings
Per the IRC, the maximum number of service disconnecting means permitted for a single set of service-entrance conductors is:
How many service disconnects can be grouped at one location for a single set of service-entrance conductors?
Using the standard calculation per IRC E3602, the general lighting load for a dwelling is calculated at what volt-amperes per square foot?
Kind of circuit formed by the conductors from the last overcurrent device protecting it to the outlet or outlets.
1.4 Electrical Theory Fundamentals
Per the IRC standard service load calculation, each small-appliance branch circuit must be included at a minimum load of:
Find five hidden terms in a grid of letters.
Term Search
What copper service-entrance conductor size is required for a 200-ampere single-phase dwelling service?
Using the standard method in IRC E3602, the first 3000 VA of general lighting, small-appliance, and laundry load is calculated at what demand factor?
Kind of factor obtained by dividing a system's maximum load by its total connected load.
Per the IRC, which of the following is NOT required to be connected to the grounding electrode system of a dwelling?
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