ICC Residential Electrical 2025 updated
Study Questions E1 correctly answered
to pass
Residential Electrical Scope E3401.2 - correct answer ✔✔Limited to 120/240 volt,
0-400 ampere, single phase systems in one and two family dwellings and
accessory structures.
Residential Electrical Limitations E3401.3 - correct answer ✔✔Does not cover
Installations, including associated lighting, under the exclusive control of
communications utilities and electric utilities, or services over 400 amperes.
Integrity of electrical equipment E3404.7 - correct answer ✔✔Internal parts of
electrical equipment, including busbars, wiring terminals, insulators, and other
surfaces shall not be damaged or contaminated by foreign materials such as
PAINT, plaster, cleaners, abrasives, and corrosive residues.
Working clearances E3405 - correct answer ✔✔36 inches deep, 30 inches wide,
and floor to 6.5 feet with minimum 90 degree opening doors
Panelboards and Service Equipment Locations 3405.5 - correct answer ✔✔Shall
not be located in bathrooms, toilet rooms, clothes closets, or over the steps of a
stairway.
Minimum size of conductors E3406 - correct answer ✔✔14 AWG copper and 12
AWG aluminum or copper clad aluminum.
, Length of conductor for splice or termination 3406.11.3 - correct answer
✔✔minimum 6 inches of free conductor or 3 inches outside of each opening.
Tightening torque values E3406.12 - correct answer ✔✔are provided by the
manufacturer to be achieved by approved means (torque wrench, torque
screwdriver) indicated in inch pounds.
Methods not permitted for connections E3406.14.2 - correct answer
✔✔connection devices or fittings that depend soley on solder shall not be used.
Grounded Conductor Identification E3407 - correct answer ✔✔Neutrals:
continuous white or gray outer finish or three continuous white or gray stripes
along it or at terminations, on any other sheathing color except green insulation.
Festoon Lighting NEC 225.6 - correct answer ✔✔A sting of outdoor lights that are
suspended between 2 points. Shall not be smaller than 12 AWG unless the
conductors are supported by messenger wires and across spans not more than 40
feet without messenger wires.
Ceiling-supported paddle fans shall be supported _____ of the outlet box - correct
answer ✔✔independently
E4101.6
Above-ground service-entrance cables subject to physical damage shall be
protected by Schedule ___ PVC conduit - correct answer ✔✔Schedule 80 or rigid
metal conduit, intermediate conduit, electrical metallic tubing, or other approved
means.
E3605.5
Study Questions E1 correctly answered
to pass
Residential Electrical Scope E3401.2 - correct answer ✔✔Limited to 120/240 volt,
0-400 ampere, single phase systems in one and two family dwellings and
accessory structures.
Residential Electrical Limitations E3401.3 - correct answer ✔✔Does not cover
Installations, including associated lighting, under the exclusive control of
communications utilities and electric utilities, or services over 400 amperes.
Integrity of electrical equipment E3404.7 - correct answer ✔✔Internal parts of
electrical equipment, including busbars, wiring terminals, insulators, and other
surfaces shall not be damaged or contaminated by foreign materials such as
PAINT, plaster, cleaners, abrasives, and corrosive residues.
Working clearances E3405 - correct answer ✔✔36 inches deep, 30 inches wide,
and floor to 6.5 feet with minimum 90 degree opening doors
Panelboards and Service Equipment Locations 3405.5 - correct answer ✔✔Shall
not be located in bathrooms, toilet rooms, clothes closets, or over the steps of a
stairway.
Minimum size of conductors E3406 - correct answer ✔✔14 AWG copper and 12
AWG aluminum or copper clad aluminum.
, Length of conductor for splice or termination 3406.11.3 - correct answer
✔✔minimum 6 inches of free conductor or 3 inches outside of each opening.
Tightening torque values E3406.12 - correct answer ✔✔are provided by the
manufacturer to be achieved by approved means (torque wrench, torque
screwdriver) indicated in inch pounds.
Methods not permitted for connections E3406.14.2 - correct answer
✔✔connection devices or fittings that depend soley on solder shall not be used.
Grounded Conductor Identification E3407 - correct answer ✔✔Neutrals:
continuous white or gray outer finish or three continuous white or gray stripes
along it or at terminations, on any other sheathing color except green insulation.
Festoon Lighting NEC 225.6 - correct answer ✔✔A sting of outdoor lights that are
suspended between 2 points. Shall not be smaller than 12 AWG unless the
conductors are supported by messenger wires and across spans not more than 40
feet without messenger wires.
Ceiling-supported paddle fans shall be supported _____ of the outlet box - correct
answer ✔✔independently
E4101.6
Above-ground service-entrance cables subject to physical damage shall be
protected by Schedule ___ PVC conduit - correct answer ✔✔Schedule 80 or rigid
metal conduit, intermediate conduit, electrical metallic tubing, or other approved
means.
E3605.5
