ICC E1 flashcards

31 cards. Read the term and the definition here. The deck at the top of this page is optional.

Working clearance depth

At equipment operating at 0-150 volts to ground, the minimum clear working space in front is 36 inches; 151-600 volts requires 42 inches where the opposite wall is grounded.

Dedicated equipment space

The zone above switchboards, panelboards, and motor control centers up to 6 feet, and the footprint depth, is reserved for electrical equipment only; no piping or ducts allowed.

Main bonding jumper

The connection between the grounded service conductor and the equipment grounding conductor at the service; it ensures a low-impedance fault path and is removed only for separately derived systems.

Equipment grounding conductor sizing

Table 250.122 sizes the equipment grounding conductor from the rating of the overcurrent device protecting the circuit, not from the conductor ampacity.

Ampacity correction factors

Conductor ampacity from the tables is multiplied by ambient temperature correction and conduit fill adjustment factors before comparing to the overcurrent device rating.

Next standard OCPD size

Where the conductor ampacity does not match a standard fuse or breaker rating, the next higher standard rating may be used if it does not exceed 800 amperes and certain limits are met.

Service disconnect location

The service disconnecting means must be installed at a readily accessible location nearest the point of entry of the service conductors, either outside or inside nearest the entry.

Receptacle outlet spacing

In dwelling units, receptacle outlets must be installed so that no point along the floor line is more than 6 feet from a receptacle in the specified wall spaces.

Plan review scope

Review confirms load calculations, service and feeder sizing, conductor and overcurrent protection coordination, grounding electrode system, and required clearances before a permit is issued.

Rough-in inspection

Performed after framing and wiring but before concealment; verifies box fill, cable support, drilling protection, and grounding before walls are closed.

Dwelling general lighting load

Three volt-amperes per square foot of floor area for general lighting, plus 1,500 VA each for the two small-appliance and one laundry branch circuits.

Optional calculation method

Article 220 Part IV applies demand factors to general loads and uses the larger of heating or cooling, often yielding a smaller service than the standard method.

Correction notice content

A written notice identifies the specific code section violated, describes the observed condition, and states what must be corrected before re-inspection.

Approved plans on site

The approved set must be available at the job site for the inspector; field changes require documented approval before the work is concealed.

Certificate of occupancy

Issued after a passed final inspection; it confirms the electrical installation complies with the approved plans and the adopted code edition.

Temporary construction power

Temporary service must still have grounding, overcurrent protection, and GFCI protection for receptacles; it is inspected like permanent work.

NM cable ampacity limit

Nonmetallic-sheathed cable conductors are limited to the 60°C ampacity column regardless of the conductor insulation rating, per 334.80.

Box fill counting

Each 14 AWG conductor counts 2.00 cubic inches, 12 AWG 2.25, and 10 AWG 2.50; add one count per device yoke, clamp, and grounding conductor.

Raceway fill percentages

Conduit interior area may be filled to 53 percent for one conductor, 31 percent for two, and 40 percent for three or more conductors.

NM cable support interval

Nonmetallic-sheathed cable must be secured every 4.5 feet and within 12 inches of each box, with no more than 360 degrees of bends between pull points.

Concrete-encased electrode

A grounding electrode of at least 20 feet of bare copper conductor or reinforcing steel encased in concrete in direct contact with the earth.

Ground ring electrode

A ring of bare copper conductor at least 20 feet long, sized 2 AWG or larger, buried at least 30 inches below grade around the building.

Wet location wiring

Wet locations require listed wet-location fittings, gasketed boxes, and conductors rated for wet use such as THWN-2 or UF cable.

Class 2 and line voltage

Line-voltage and Class 2 or 3 conductors may not occupy the same box or raceway unless a listed barrier or the equipment listing separates them.

Voltage tester verification

Before touching conductors, confirm the tester on a known live source, test the circuit, then re-test the tester to prove it still functions.

GFCI trip test

A GFCI must trip when a tester simulates a ground fault and must also trip when the device's own test button is pressed, then reset normally.

AFCI test button

Arc-fault circuit interrupter breakers are verified by pressing the test button, which must trip the breaker; testers may not reliably trip all listed devices.

Insulation resistance testing

A megohmmeter measures insulation resistance; results are compared with manufacturer values and baselines and are diagnostic rather than a code pass criterion.

Stop-work authority

When work is unsafe or unpermitted, the inspector may order work stopped and must document the condition and notify the permit holder in writing.

Bonding continuity check

A low-resistance reading between the grounded conductor and the grounding terminal at the service confirms the main bonding jumper is installed and effective.

Energization approval

Exposed live parts, missing covers, or improper bonding must be corrected before the inspector approves energization or occupancy.