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

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 revised section for cable trays now requires a minimum space of ________ above the cable tray for access unless an exception is met. (In many commercial, industrial, and data centers these trays can become very congested.)

The requirement to maintain a 1 1/2 inch spacing from a roof decking for cables, raceways, and boxes now includes a decking poured with light weight concrete at least ______. (It is common during roofing repairs or replacement to use long screws that can penetrate wiring methods.)

For branch circuits over 1000 volts AC that can require servicing, a 125 volt single phase 15- or 20-ampere receptacle outlet shall be available __________. (Generally the receptacle shall not be powered from the load side of the equipment.)

In addition to the off?site utility electrical service, which of the following sources are permitted to supplement the service and supply the entire electrical load of a healthcare facility, based on reliability?(This is great for electrical services and healthcare faculties allowing alternative and distributed energy systems such as microgids fuel cells and energy storage systems to legally supplement electrical supply this enables healthcare systems to improve reliability and energy independence beyond traditional utilities )

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?

New Article 266 covers feeders over 1000 volts AC or 1500 volts DC. The concept of “supervised installations” was added and permits a reduction in standard conductor sizing. The work of a supervised installation must be performed by ________. (The NEC is working to accommodate these unique high voltage systems.)

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

If a 16 AWG copper conductor is used to supply a branch circuit, the maximum overcurrent protection (circuit breaker) device rating is __________. (This circuit is not allowed to supply receptacle outlets.)

Modification of luminaires using retrofit kits is permitted only when the retrofit kit is __________.

The NEC section regarding ground rod and pipe electrodes has been revised. Burying the electrode in a trench 30 inches deep ___________. (Arguably the most common use in residential and commercial applications, this revision should clarify the previous intent.)

According to the NEC, which of the following statements about reconditioned wiring devices is correct?(Wiring devices cannot be reconditioned because they’re inexpensive are safety critical have internal components that cannot be inspected and are not designed for refurbishment )

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

Which of the following is REQUIRED when multiple relocatable structure sections are physically connected together?(This update Provides much needed clarity for grounding relocatable structures by confirming the grounding electrode systems are not required aligning practice with that for mobile and manufactured homes )

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.)

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

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.)

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?

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?

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 )

Surge-Protection Devices (SPDs) on feeders has been expanded beyond residential occupancies to now include __________. (To safeguard electronic equipment in sleeping and living quarters such as smoke alarms.)

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)?

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

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.)

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

Receptacles shall not be installed in a face?up position in which of the following locations? (The NEC prohibits installing receptacles face?up on work surfaces because liquids can spill directly into the device,debris can fall into the openings and It creates a shock and contamination hazard)

A non–grounding?type receptacle with no grounding conductor present may be replaced with which of the following?

When a dwelling unit HVAC outdoor outlet is replaced and Special Purpose SPGFCI protection is used, ___________. (Special SPGFCIs marked HF are higher frequency weighted that help with inherent leakage currents like HVAC equipment which have had issues with tripping and system lockouts resulting in service calls.)

The NEC requires central heating equipment to be supplied by an individual branch circuit. Under the 2026 revision, which additional load is permitted on the same branch circuit?

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.)

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 __________.

Chapter 3 addresses maximum box fill and has been revised stating ________ are not included in box fill calculations. (This now officialy clarified this long-debated issue because they physically occupied space in the box.)

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 )

__________ are a securing method for Armored Cable that was added to the list of items that shall be listed and identified. (Improper fastening over the long term can cause damage to the conductor insulation.)

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 )

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.)

Which of the following is REQUIRED for lighting installed inside tents, concessions, and similar temporary structures?(Including section 525.25 in the 2026 NEC aims to improve safety . Carnivals circuses fairs and similar outdoor events temporary wiring and lighting system are used often. the 2026 NEC has made two sections with new requirements lamp protection and luminaries for egress lighting )

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

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.)

Which of the following is REQUIRED for the disconnecting means of a non?moving attraction or portable structure such as a tent, concession, inflatable, or slide?

The NEC code section that governs the maximum number of disconnects each service can have (the two to six rule) has also been updated regarding how the disconnects can be physically arranged including _____________. (To also address maintenance safety and arc-flash protection.)

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.

Which of the following is TRUE regarding service equipment for a mobile home under Article 550?

According to the 2026 NEC, the risk of ignition from optical radiation must be evaluated for which types of equipment when the radiation falls within the 380 nm to 10 ?m wavelength range and may enter a hazardous location?(Would you call this forward thinking? may be necessary in hazardous location safety. Lasers are here to stay )

According to 2026 NEC when overcurrent protection is not provided at the generator terminals, the ampacity of the conductors from the generator terminals to the first distribution device containing overcurrent protection shall be not less than which of the following?

Ground-Fault Circuit-Interrupter Protection (GFCI) requirements in dwelling units have made adjustments to include storage and work areas not intended as habitable rooms ______________. This modification is intended to decrease hazards.

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 )

___________ that include cooking facilities which have permanent provisions for cooking shall now meet the kitchen small applicance branch circuit AFCI and GFCI requirements of dwelling units. (Previously only guest rooms and suites in hotels or motels were required.)

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.)

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?

Overcurrent protective devices serving the Essential Electrical System (EES) must be coordinated for the period of time that a fault’s duration extends beyond which of the following?(The addition of subsection F is a critical enhancement to the National Electric Code in 2026 as it addresses the need for precise coordination of over current protective devices in EES ‘s. This author thinks precise coordination is needed in all applications, who wants a main fuse blowing or circuit breaker turning off everything that you are addressing in whichever system you’re addressing? Life safety of course is more urgent )

Terminology for Low-Voltage Suspended Ceiling Power Distribution Systems was replaced, now requiring that all components shall be _________. (Careful installation is needed to avoid damage or fire risks for these increasingly common systems.)

For Mineral-Insulated, Metal-Sheathed Cable (Type MI) the _________ is not required to be listed and identified. (There is an increasing demand for these systems’ reliability and safety.)

Restoring and reconditioning Medium Voltage (MV 2,000 to 35,000 Volts AC) electrical equipment for re-use such as _________ is now prohibited. (MV equipment is very vulnerable to degradation. Restoring has become popular to cut costs.)

A key update in Article 430 of the 2026 NEC consists of officially recognizing which motor designs throughout the article? (These motors are very efficient and introduce new ways to calculate lock rotor current and properly sized circuit parts )

The 2026 NEC requires which of the following bonding methods for normally non–current?carrying metal parts of electrical equipment, raceways, metal?clad cable, and metal enclosures in hazardous classified locations?

Automatic controls like motion sensors or time based controllers ________ as the sole means of controlling illumination in attics, underfloor spaces, and utility rooms. (To ensure that we are not left stranded in the dark in a potentially dangerous tight space.)

Requiring listing for overcurrent protection on systems rated over 1000 volts AC (medium voltage systems) is a new addition to the NEC with an effective date of _________ for devices 15,000 volts or less. (Historically not listed utility-grade components are now more commonly installed on private premises. The additional time allows for the infrastructure to catch up.)

Updated language for cable trays now allows ________ rated 2000 volts or less in the trays. (The terminology “evenly distributed across the cable tray” was eliminated, replacing it with conductor count and size. That term was used to encourage proper heat dissipation but it was hard to enforce.)

Section 501.3(B) of the 2026 NEC is ____________.

As a general rule, receptacle outlets shall now not be installed within ________ of residential kitchen cabinets with countertops or work surfaces. (Apparently we installers would place these receptacles close so the power supply cord of an appliance could reach in the absence of suitable wall space.)

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.)

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.)

A new list item added as an approved method for supporting and securing Metal-Clad Cable (Type MC) is _________. (Designed to restrain cables from whipping during a fault condition which can cause damage.)

The requirement for a receptacle to serve electrical equipment for servicing and maintenance activities has been revised __________.

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

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

Surge protective devices (SPDs) and surge arresters used for critical overvoltage protection ________. (This change brings SPD in line with other NEC code sections.)

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.)

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

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

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.)

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 residential installation of receptacle outlets on the walls of cabinets with countertops or work surfaces shall now be installed no less than _______ below that countertop. (Recent code cycles restricted the number and locations because of the large number of inuries to crumb crunchers as a result of pulling the appliance cords. Kitchen appliance cords are 2 feet long.)

When using reconditioned switches, not all types are permitted to be installed. Which one is not permitted under the 2026 National Electrical Code?(General?use snap switches fall under the category of wiring devices, and the NEC explicitly prohibits reconditioning of wiring devices )

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.)

According to the NEC, electrical equipment and wiring for electric vehicle power transfer systems shall be installed in accordance with Article 625 Part III, except as modified by 511.10(B)(2) and 511.10(B)(3). Flexible cords used in these systems shall be __________.

If the disconnecting means for air?conditioning or refrigerating equipment is readily accessible to unqualified persons, what requirement applies to any enclosure door or hinged cover that exposes energized parts when opened?

A new code section for overcurrent protection now covers and introduces the new term “transformer secondary conductors,” and they are permitted to be ________. (This change separates feeder tap conductor from the transformer secondary rules.)

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.)

A new NEC provision now includes a GFPE protection requirement for DC electrical system feeders rated at ______ or more, operating at 150 volts up to 1500 volts to ground. (Energy systems such as battery energy storage systems (BESS) and efficient building power systems now often use high level DC power systems that need protection from damage and fire.)

Conductive pavement heating systems shall be designed as which of the following?

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

A new NEC section identifies conductors that are considered damaged and now would require replacement including _________. (This damage can compromise insulation ratings and cause short circuits.)

NEC Article 225 covering outside branch circuits or feeders _______ the requirements in Article 210 covering inside branch circuits and Article 215 which convers inside feeders. (This clarification should help installers not to assume that only Article 225 applies to installations.)

The NEC has officially added _________ as a permissible bonding jumper type behind the traditional wire or bus conductors. (This method has been widely used in the field for some time. It is important to use listed fittings and to torque them to manufacturers’ specifications.)

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.)

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.)

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?

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

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.)

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.)

A new option item ________ was added to address areas where raceways were subject to temperature changes that can cause condensation. (The circulation of warm area such as into a cold storage is the primary cause of condensation in raceways that can then drip into electrical enclosures.)

According to the 2026 NEC the terminology for generator remote emergency shutdown has been modernized by replacing an old term emergency stop switch with_______. (This update reflects the evolution of generator control technologies which increasingly rely on digital systems programmable interfaces and network control circuits rather than physical traditional switches )

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.)

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.)

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.)

The list that governs what equipment is allowed to be used on the supply side (line side) of service equipment has undergone a substantial re-organization and now also includes _________. (This reflects the increased demand for these to enhance safety also during maintenance.)