Where cannabis oil booths are provided with a gas detection system installed in accordance with 500.7(K) or 505.8(I), electrical equipment listed for __________ shall be permitted.

The NEC requires central heating equipment to be supplied by an individual branch circuit. Exception No. 1 has been expanded to include which additional type of equipment?

Motor control centers supplied by a feeder shall be marked in accordance with which section to identify the location of all means necessary to disconnect power to the motor control center?

Ground-Fault Circuit Interrupter Protection (GFCI) requirements for dwelling units were additionally modified and separated to include ____________. (The intention was to clean up the 2023 language, which was considered confusing.)

According to the 2026 NEC which of the following correctly describes the new listing requirements and effective dates for high?voltage switchgear and industrial control assemblies?

According to 2026 NEC the outdoor disconnecting means for a split?system HVAC unit in other than one? and two?family dwellings must be marked with which of the following?

The NEC has eliminated ________ as an option for securing Mineral-Insulated (Type MI) cable. (Type MI cable is often used for fire alarms, high temperature locations, and emergency systems. It can be vulnerable to mechanical stresses during the installation.)

In an enhancement to the grounding and bonding rules the NEC has added ________ to the list of raceways that shall be bonded at both ends if it contains a grounding electrode conductor. (Nonferrous metals like aluminum do not produce significant magnetic properties or heat so do not create the same risk during a fault condition.)

According to 2026 NEC why are reconditioned capacitors not permitted to be installed?(The 2026 NEC introduces a new provision ,reconditioning which makes a Definitive and safety driven statement” reconditioned capacitors must not be installed”)

A new list item now permits grounded neutral conductors sized 6 AWG and smaller with white or gray insulation to have a ________. (This should help match a neutral to the corresponding phase conductors in a raceway with other conductors. ( This has already been done in other countries.)

The NEC restructuring of horticultural lighting into Sections (A) and (B) is based on which voltage threshold?

Generally, wiring methods and materials installed under ________ has been revised and still must maintain a separation of no less than 1 1/2 inch from the roof decking. (This section was also re-written in the 2023 NEC.)

The Essential Electrical System (EES) shall be divided into which branches, and where shall the division occur when more than one transfer switch is required? (The 2026 NEC edition this section’s title was updated to essential electrical systems and the terms nursing home and limited care faculties were removed the title now better reflects its content )

In the ampacity tables, the temperature rating of conductor type XHWN has been changed and it now sits in the _________ column of the table. (An example of a correction because XHWN was in the wrong column in previous code cycles.)

A change in determining the required receptacle outlet placement in dwelling units was a revision to exclude _________ from the wall space measurements. (The purpose was to reduce the overuse of extension cords. This should simplify the task of laying out receptacle outlet locations in the home.)

The NEC requirement for listing in Article 424 has been expanded in the 2026 edition to include which of the following?

There are now enhanced marking requirements for one- and two-family residential service disconnects and specifically state that the marking ______. (Some state rules also have additional requirements.)

Receptacles and fixed equipment in wet?procedure locations shall be provided with special protection against electric shock. Where GFCI protection is used, which of the following power distribution methods is permitted?(The code now prohibits the use of shared GFCI’s this means if a gfci trip occurs it should only disable the single affected receptacle or power distribution outlet not multiple )

Which of the following is REQUIRED for the disconnecting means of a moving ride or amusement attraction under Article 525?

Diagnostic imaging and treatment equipment shall be installed in accordance with which portion of the NEC?(The 2026 NEC revision clarifies and expands the scope of part five vertical 517 by stating that it applies to all diagnostic imaging and treatment equipment not just x-ray systems )

According to the NEC, an electric vehicle connector shall NOT be located within a __________ location as defined in 511.5.

Article 404 requires switches to be installed in easily accessible locations. What is the maximum permitted height to the center of the grip of the operating handle when the switch is in its highest position?

There was a change for Service Entrance Cables (SE and USE) to allow relief for flat cables when bent on the flat side of the cable. _______________. (these flat versions are very common in residential applications.)

For Intermediate Metal Conduit (IMC) __________ now permitted as an acceptable means to prevent galvanic corrosion when joining dissimilar metals. (This comes up in retrofits such as industrial expansions or changes.)

On work surfaces, receptacles shall not be installed in a face?up position unless which condition is met?

There is a significant change to the scope of NEC article 404 by including __________.

Electrical wiring for lighting installed inside tents and concessions must be installed in which of the following ways?(Arco 525 previously addressed many aspects of temporary outdoor installations GFCI protection flexible cords and overcurrent devices it did not specifically address wiring inside tenant enclosures and concessions where conditions differ significantly but now it does )

The construction of an equipotential plane shall comply with which NEC subsections?(This change introduces new detailed construction requirements for a quick potential planes in agricultural buildings )

When using reconditioned switches, not all types are permitted to be installed. Which type is permitted under the 2026 National Electrical Code?

The NEC section that governs the maximum number of disconnects each service can have has been revised and clarifies that ______ does not have to be counted as one of the permitted service disconnects. (There was confusion about disconnects that served as protection rather than load-serving functions.)

In the 2026 NEC, wiring?device–type switch requirements were relocated from Article 404 to which Article?

Which of the following is REQUIRED for bonding an equipotential plane under NEC 547?(This change makes it clear and enforceable standard for constructing equipped potential planes in agricultural environments )

A warning sign is required where removal of a grounding or bonding connection in power?source equipment would interrupt the grounding?electrode?conductor or grounded?conductor connection to another energized source. What must the sign state?

Whenever an existing branch-circuit wiring that now requires Arc-Fault Circuit-Interrupter Protection (AFCI) is modified, ____________. (The NEC considers this an opportunity to increase safety in older systems.)

A new exception was added for Metal-Clad Cable (Type MC) with ________ which is now permitted in a damp or wet location. (These resist oxidation and galvanic corrosion effectively.)

In a major change, there is now a new size limitation to permit a ________ minimum size copper conductor to serve lighting outlets and exhaust fans in bathrooms and laundry rooms. (Current demand can now be relatively lower in homes with LED lighting and compact fan units are standard)

Which of the following best describes the updated GFCI requirement for receptacle outlets in Article 550?(Instead of specifying certain appliances and locations in a mobile or manufactured home the language Changed to reference section 210.8 This completely removes any differences between the old mobile home requirements And stick built home requirements )

A revision to Chapter 3 also now clearly shows what is not covered and includes ________ (to give a clear explanation and framework for compliance and installation.)

A grounding electrode conductor ________ through ventilation, mounting slots, or weep holes of an enclosure like a transformer. (To address a common misapplication in the field risking mechanical damage to the GEC, affecting water drainage, and GEC support.)

When cable ties are used as support for flexible conduit and tubing they shall be listed and identified for that purpose such as ________. (The 2023 edition of the NEC officially allowed the use of cable ties for cable systems.)

In the electrical trade, the term wiring devices commonly refers to which of the following?

For a dwelling unit outdoor outlet replacement for listed HVAC equipment, _____________. (This should help this industry with unwanted tripping because standard GFCIs were incompatible.)

A new mandate requires that when a raceway such as IMC with threads enters an enclosure, a locknut or fitting ______ be installed on the inside and outside of the enclosure. (This rule was buried in the bonding and grounding section so was sometimes not installed as required.)

Service equipment is permitted to be installed in or on a manufactured home only if which condition is met?

According to the 2026 NEC, the requirements of Article 700 shall NOT apply to which of the following?(This change addresses the impracticality of applying article 700 to all components of the electrical essentials system the change emphasizes only life safety branch of the essential electrical system must comply with 700 )

When an EES uses more than one on?site power source, which of the following is REQUIRED when any single on?site source is disabled for service?

A new section now clearly states that _________ cannot be reconditioned and installed. (Seems to come up more frequently now as our electrical equipment ages and natural disasters occur.)

According to 2026 NEC which of the following requirements applies when switchgear is installed over a combustible floor?

All activities, systems, and equipment that are new or altered in patient care spaces shall be designed and installed to meet the requirements of which of the following?(NFPA 99 category 1 failure likely to cause major injury or death category two failure could cause minor injury category three failure unlikely to cause injury but may cause discomfort category 4 failure has no impact on safety or care )

What was the purpose of adding Parts VI and VII to Article 495 in the 2026 NEC?(The 2026 NEC introduces two entirely new parts article 495 parts VI and VII , expanding coverage beyond just transformers to include other types of oil insulated medium and high voltage equipment )

New Article 265 now specifically covers branch circuits over 1000 volts AC and 1500 volts DC but also additionally recommends _________ for additional information. (Content relocation from Article 235 to restructure low-voltage (LV) and medium voltage (MV) systems.)

In ___________ installations with multiple energy sources, those sources not located adjacent to the service disconnect must now be marked and identified on the plaque or directory with their location. (Many of these more common disconnects are installed in locations such as garages, sheds, basements, and rooftops.)

An exception for Ground-Fault Circuit-Interrupter Protection (GFCI) requirements for an industrial establishment requires _________. (The electrical industry has been complaining about overapplication of GFCI requirements; this revision reflects that.)

Where must the equipment grounding conductor (EGC) be connected for a separately derived system such as a generator? (Stated an article 525 exception it reads this section 525.31 shall not apply to portable generators used in accordance with 445.20 A exception )

A recent section change requiring barriers to protect contact to service terminals has been revised to require that these barriers be ______. (To help protect from shock or arc-flush hazards during maintenance or troubleshooting.)

When a laundry area is located inside a closet or compact enclosure, both the lighting outlet and the control device _________. (To reflect common small laundry rooms such as in multifamily applications.)

According to 2026 which of the following correctly describes the requirements for isolating means used to completely isolate equipment from all ungrounded conductors (other than service conductors)?

For services over 1000 volts AC or 1500 volts DC, if the short circuit protection device (OCPD) is not an integral part of the service disconnecting means, it ________ (to assure that the disconnect is readily accessible.)

Cannabis extraction operations shall NOT be located in any building containing which of the following occupancies?

Wording was changed to clarify that ________ direct buried conductors and raceways buried at least 18 inches shall have their location identified by a warning label. (It was a common misconception that this rule only applied to directly buried conductors and not also buried raceways.)

A new exception now states that _________ individual branch circuits are not allowed to supply receptacle loads. (Because of the standard plug and receptacle ratings there would be a potential for overloading.)

Part II of Article 517 does NOT apply to which of the following spaces?

Ground-Fault Circuit-Interrupter Protection (GFCI) requirements for non-dwelling units clarified ___________ such as an aquarium is required where receptacles are installed within 6 feet. (Revised to reduce confusion and possible unnecessary installation of GFCI protection.)

Service entrance conductors are allowed to be spliced or tapped, and the equipment used must be both listed and marked or identified for use. The new industry-recognized abbreviation that manufacturers can use instead of the entire phrase “suitable for use on the line side of service equipment” is _______. (in the past, this was not allowed, making changes challenging. Line side equipment must meet strict additional standards because they are not protected by an overcurrent device.)

Article 480 applies to which of the following battery installations? (The term standby has been removed to clarify that requirements apply to all battery installations )

A new NEC section now covers the method required to establish an effective ground fault path when installing a nonmetallic enclosure with metallic raceways. Generally, ________ metallic wiring method shall have bonding jumpers or fitting. (Although uncommon, there are specially designed and listed nonmetallic enclosures with built in metal bonding.)

Which of the following bonding methods is not permitted for normally non–current?carrying metal parts in hazardous classified locations?(Vision grounding and bonding requirements for hazardous locations were found in three different locations )

A significant change to NEC Article 404 in the 2026 edition is: (The 2026 NEC narrows Article 404 to cover only equipment?type switches. Device?type switches—such as snap switches, dimmers, and electronic controls—were moved to Article 406 as part of a structural reorganization.)

New NEC Article 268 covers services over 1000 volts AC or 1500 volts DC and acknowledges that supervised installations can have grounding and bonding designed by _______. (A formal introduction of customized conductor sizing for high voltage systems.)

Tamper?resistant receptacle requirements have expanded to include which of the following locations in addition to dwelling units?

According to the 2026 NEC, reconditioned equipment permitted to be installed in Zone?classified locations shall comply with the requirements of __________.

A new NEC revision adds requirements for identification and labeling of switchboards, switchgear, and panelboards. Under this revision, which section must these assemblies comply with?

Grounding electrode conductors shall generally be continuous without a splice. A new exception to that rule includes ______ that is accessible. (Please note that this new option must be accessible for inspection and maintenance after installation…does that include burial?)

When raceways are installed in a wet location above grade level they now shall _______. (Moisture accumulation can be an issue in environments such as food processing plants, car washes, and swimming pools.)

Switchboards and switchgear are permitted to be reconditioned if damaged by fire. According to the NEC, what condition must be met before reinstallation?

An update to Underground Feeder and Branch-Circuit Cable (Type UF) now permits the use of _______ conductors as the minimum size for this burial type cable. (This popular cable commonly used in residential and light commercial underground applications can run long distances so this change can be a considerable cost savings.)

An EES that uses a single on?site power source must include a permanent switching means to connect a portable or temporary on?site power source. Which of the following is REQUIRED?(Temporary power source connection refers to an intern power source used in the primary power source is unavailable or during maintenance )

When installing switches and circuit breakers, their highest position must not be more than 6 ft 7 in above which of the following?

The NEC essential general requirements for grounding and bonding have been restructured to provide a clear list format, restating clearly that the earth shall not be ________. (Previously this section was in one single dense paragraph. This formatting change should be helpful to all stakeholders.)

There is now a new size limitation to permit a ______ minimum size Copper-Clad Aluminum Conductor to serve lighting outlets and exhaust fans in bathrooms and laundry rooms. (A Copper-Clad conductor has copper on the outside and aluminum in the center. Be sure to use wirenuts rated for copper and aluminum AL/CU.)

The text in the NEC relating to when the neutral conductor should be counted as a current-carrying conductor for ampacity adjustment in raceways has been reorganized and also written into a list format. A neutral conductor that only carries the unbalanced current (linear load) from the other conductors in the same circuit is _______. (The current ratings of conductors has been evolving and changing in the NEC since the late 1800s.)

Additional sources of electrical service permitted to supplement the utility service in healthcare facilities shall have the capacity and rating to meet the maximum actual demand likely to be produced by the connected load. Demand calculations for sizing these systems shall be based on one or more of the following EXCEPT __________.

New Article 206 outlines the general requirements for ________. (Non-Powered-Limited circuits can pose a bigger risk for fire and shock. Previously this content was limited to Chapter 3.)

Service disconnects in other than one- and two-family dwellings shall now be marked _______. (To also help reduce delays and confusion for first responders and utilities, especially with services with multiple disconnects such as solar.)

Which of the following statements correctly reflects the revised requirements for reconditioned equipment used in hazardous (classified) locations?

Essential electrical system (EES) loads shall be served by two or more independent sources or sets of power sources and feeders. At least one of these sources must be __________.

Branch circuits serving life?safety lighting and power circuits shall NOT be installed as which of the following?(Multi wire branch circuits are generally allowed in many types of installations however their use of life safety system pose risks especially in critical environments like hospitals for instance a single open neutral could disable multiple circuits simultaneously reliability and Redundancy are paramount for life and safety loads )

If overcurrent protection is not provided at the generator, conductors from generator to the first overcurrent protective device must have an ampacity of at least_________. (This requirement accounts for possible operational overloads or transient surges )

As a general rule, in dwelling units, outdoor circuits rated at 150 volts or less to ground require GFCI protection for __________. (This increase addresses the trend for larger HVAC units now being installed in residential applications.)

Fixed outdoor electric deicing and snow?melting equipment includes which of the following?

The NEC created Article 270 to cover grounding and bonding for systems over 1000 volts AC or 1500 volts DC. Grounding for systems _________ is now also covered. (These systems can be specialized with increased risk of ground touch potential.)

Which of the following is required for a faceplate that incorporates a night light and is installed over a receptacle outlet?

The scope of new NEC Article 267 covers _______ operating at 1000 volts AC or 1500 volts DC. (Previously located in Article 235 along with other higher voltage systems.)

According to 2026 NEC when a generator set is equipped with a listed overcurrent protective device or a combination of a current transformer and overcurrent relay, conductors are permitted to be tapped from the load side of the protected terminals under which condition?

Lighting equipment identified for horticultural use shall be supplied by outlets protected in accordance with which of the following?

New listing requirements for Metal-Clad Cable (Type MC) now requires ________ to be listed and identified for use. (Based on the UL standard 2239 for safety of hardware.)

Emergency electrical disconnects for fuel?dispensing systems shall be installed in approved locations not less than 20 ft and not more than 100 ft from the dispensing devices they serve. Activation of the emergency shutoff device or electrical disconnect shall disconnect power to all of the following EXCEPT __________.(Just change Clarifies receptacles over or adjacent to motor fuel and dispensing devices and hazardous classified locations must be disconnected during an emergency )

Ground-Fault protection of equipment shall now also be required for solidly grounded DC systems rated at ______ or more (to address the increasing direct current (DC) systems in modern electrical systems.)

A new section in NEC article 240 identifies what overcurrent protective devices (OCPDs) are suitable and approved for providing branch-circuit, feeder service conductors and electrical equipment including _________. (The intent was to create one location for users that identified the types of breakers and fuses that the NEC recognized.)

Branch-circuit disconnecting means rated 1000 amperes or more, solidly grounded, but not exceeding ____ volts line to line now mandates GFCI protection even for DC systems. (The NEC is trying to keep up with the increased usage of DC power such as in data centers, EV charging, energy storage systems, and large scale solar.)