A revision clarified that the sheath on an NM cable (Romex) shall now officially extend not less than ________ beyond any cable clamp or cable entry.

An alteration notes that when NM cable (Romex) is protected from physical damage by sleeving it in a conduit, ________.

Type NM cable (Romex) shall be permitted to be installed in multifamily dwellings and ________. (See Annexes for Type III, IV, and V construction.)

Type Metal Clad Cable (MC) sizes ________ can be used for control and signal applications. (Previously there was some confusion.)

Copper-Clad Aluminum wire is quickly becoming popular and is now allowed in Metal-Clad Cable (MC) with a minimum conductor size of ________. (The terminals of 15 and 20 ampere switches and receptacles are approved for copper-clad aluminum. 14 AWG CCA conductors would have an ampacity of 10 amperes.)

Type MC cable can now be used in ________ locations if certain conditions are met. (New MCAP “All Purpose” uses the aluminum sheath as a grounding path and has a smaller diameter. Some fittings are only listed for the traditional MC.)

In an accessible attic, the term ________ has replaced “joists” when Armored Cable (type AC) is installed. (Attics do not contain floor joists.)

The scope of Article 315 entitled Medium Voltage Conductors and Cables made clarifications as to what voltages are covered and now includes ________. (Article 311 has been deleted with those requirements now relocated here.)

When an electrical junction box is installed underground by exception the location description shall be available to ________. (See local state rules as well. Commonly done at golf courses for some time.)

If listed Weight Supporting Attachment Fittings and Ceiling Receptacles are installed to support equipment, the device ________ be included in the box fill calculations. (These new devices will allow for a quick release and re-connection of fixtures.)

In addition to the previous NEC requirements for supporting a luminaire (light fixture) or ceiling-suspended fan, (paddle fan), the NEC will now allow ________. (This was requested as a requirement for all fixtures in the NEC but it failed.)

Generally, all outlet boxes mounted in ceilings of habitable rooms of dwelling units are required to be listed paddle fan support boxes or now ________. (Before, it was if there was a spare wire. Some now use wireless remotes. 90% of fans sold are aftermarket sales.)

The code section for outlet boxes for ceiling suspended (paddle) fans was revised to require the boxes to be marked on the ________ as suitable for the purpose. (So, it can be seen during the rough in inspection. No more paddle fan accidents please.)

A code section was revised to clarify that conduit body enclosures (like an LB or T) must be enclosed ________. (Because conduit bodies can contain splices.)

The 2023 NEC has begun to address clearances for junction boxes with devices from side conductor entries. Now the clearance from the box wall to the installed device shall not be less than ________. (A fire investigation and documentation of damage to conductors in these situations were noted.)

When calculating box fill for conductors smaller than 4 AWG, a terminal block is now counted as ________ conductor volume based on the largest conductor. (Terminal blocks are being used more frequently and were not addressed in previous versions. The term terminal block accessory was chosen so this does not apply to each pole of a multipole block.)

Restrictions have been added that addresses sharp screw that enter outlet, device, pull, and junction box wiring spaces. An exception includes ________.

A new section was added to also address screws and fasteners entering the wire space of junction boxes and conduit bodies giving us seven options and requirements. One option to install a cover plate is ________. (These situations are commonly encountered in the field.)

Field installed screws and fasteners shall be permitted to extend into a cabinet or meter enclosure not more than 7/16 inch if it is located within ________ of an enclosure wall. (The possibility of a greater fault in these enclosures due to limited OCP upstream by the serving utility.)

Generally, when a field installed screw or other fastener without a blunt end is used to secure a phenolic label or cover, the screw shall extend no more than ________ into the cabinet without additional protection. (Damage has been an issue for some time. No more shock or fire hazard please.)

A new section was added to recognize that additional bending space is needed for conductors ________ and larger in overcurrent device enclosures. (Similar to the junction box rules.)

A new Article 305 now covers the wiring methods and the materials used for systems rated over ________. (This new article attempts to organize medium voltage (MV) information into just one location and not scattered throughout the NEC.)

Non power limited remote control and signaling circuits are no longer considered to be Class 1 circuits and are now governed by ________. (Where did it belong to begin with?)

A code section prohibits additional electrical wiring in exit enclosures like fire-rated stairwells. Only electrical wiring serving equipment permitted by ________ shall be installed within the exit enclosure. (Don’t poke holes in stairwells, only stuff that must be there should be in there.)

In an exit stairwell (Stair Tower), the exterior egress lighting at the outside exterior door ________ be supplied by the circuit that supplies lighting in the stair tower. (A stair tower is often considered as like a separate building typically sturdy fire resistant to get folks out without smoke.)

Generally, where an exit enclosure (like a structure’s stairwell) is required to be separated, as with a 2-hour firewall separation, ________. (Because penetrations did not get fire stopped, many died in a large fire in Las Vegas. The stairwell filled with smoke and acted like a chimney.)

The number and size of conductors and now also ________ in raceways shall be considered and installed so they are not damaged during and after the installation. (Intent before.)

At a junction box, with more than 8 inches in any dimension the length of free conductor shall be at least 6 inches to extend out for makeup. That free conductor ________. To address damage from routers and Sawzall. Note that the smaller J boxes are not mentioned yet.)

The general rule is that a raceway (conduit) can not be used to support a low voltage cable (like with zip ties) unless that cable is associated for control. These low voltage control cables now include ________. (For the same justification that Class 2 cables are allowed.)

When corrosion protection is necessary on conduit that is threaded anywhere other than at the factory, the threads shall be coated with a(n) ________ electrically conductive, corrosion resistant compound.

Electrical Metallic Tubing (EMT) has now been added to the Table for minimum underground cover requirements to indicate that it can be installed in underground locations. EMT shall be buried with a minimum of ________ when installed in a trench under concrete that is 2 inches thick. (Although supplementary corrosion protection (a tape) is generally required unless it is stainless. See State codes also.)

Where raceways contain 4 AWG or larger insulated conductors and these conductors enter an enclosure, ________ a bushing or listed fitting shall be used to protect the conductors.

A raceway installed under a metal corrugated roof decking is not required to be installed 1.5 inches below the decking if the decking is covered by concrete at least ________ thick. (The substantiation noted that metal roof decking fasteners use longer screw to comply with the roof hod down requirements.)

Wiring methods now found within Chapter 3 now cover up to 1,000 volts AC and ________ nominal or less. (If not limited within other locations of the NEC.)

If circuit conductors are spliced in a metal junction box, an equipment grounding conductor connection used for no other purpose shall be made between the metal box and the equipment grounding conductors in accordance with ________. (Before it stated associated conductors, so the circuit grounds were separated.)

For metal boxes when equipment grounding conductors are spliced within, a connection used for ________ shall be made between the metal box and the grounding conductors. (A pigtail.)

Generally, if circuit conductors are spliced in a multi-gang junction box, all the equipment grounding conductors associated with ________ those circuit conductors shall be connected within the box. (Now a blue wire nut may not be large enough to co-mingle all these different circuit grounding conductors together.)

A modified subsection now specifies that ________ equipment grounding conductors (EGCs) spliced or terminated within a box be connected together. (Seems like I have seen this change back and forth in the NEC.)

A new revision has provided an alternative to having to replace an existing three wire nonmetallic sheathed cable for a range or clothes dryer when it is updated and should be a four wire. If the existing branch circuit is a type of SE cable ________ when there is only a neutral grounded conductor to a range or dryer.

When the replacement of an existing snap switch without an equipment grounding terminal occurs with on that does, ________. (Only receptacles were addressed before.)

The section covering types of Equipment Grounding Conductors was reformatted into two subdivisions with permitted and not permitted. ________ shall not be permitted to be used as an Equipment Grounding Conductor.

Metal enclosures shall be permitted to be used to become part of an effective ground fault path. If metal covers or external extension rings are attached ________.

An alternative to the requirement for an “Intersystem Bonding Termination Device” to create a location for other systems to bond to the electrical system, is for a busbar. The busbar shall be connected to the grounded electrode system by a conductor sized ________. (The requirement for an accessible point for bonding other systems started for dwelling units in the 1981 NEC. It is considered an important safety measure to prevent possible differences in voltage potentials.)

A clarification notes that an Intersystem Bonding Termination Device is now to be ________. (This device acts as a location for other systems (such as cable TV) to connect their grounding electrodes at a service location externally to that service for easy safe access.)

The methods used for grounding and bonding conductor connections to the electrodes have been changed and updated. They now also note that listed ground clamps that are identified for direct burial ________.

A new code section was added to ________ grounding electrode conductors (to ground rods, etc.) being run through equipment ventilation openings. (Such as on the bottom of a transformer.)

A minimum of ________ is required when PVC conduit is used for protection for a Copper-Clad Aluminum grounding electrode conductor from physical damage. (What if it is not subject to physical damage and it is only being done because it looks prettier?)

When it comes to a grounding electrode system, the term “reinforcing steel or rods” has been replaced with ________. (To make it easier to understand in the field and the construction industry.)

An Impedance Grounded System where one phase is grounded shall be permitted for three phase AC systems of ________. (The conductor that connects the neutral point through impedance is no longer referred to as a grounded conductor or neutral conductor. This strange and dangerous animal must be supervised and maintained by qualified persons usually in an industrial facility.)

When ungrounded service entrance conductors (hots) are connected in parallel (multiple) runs of two or more raceways, the grounded conductors (neutrals) ________. (The word “connected” has also replaced “installed”.)

Alternating Current (AC) Systems shall be grounded as per Article 250, ________. (There are different types of systems out there.)

A change in Article 250 provides remedies to objectional currents resulting from ________.

The requirements for overcurrent protection of circuits rated greater than 1,000 volts AC or 1,500 volts DC are found in new Article ________. (Medium voltage requirements are now for the most part found in their own articles. It consists of language previously found in 240 and 490.)

The duty cycle rating of a surge arrester is now required to be not less than ________ of the maximum system voltage available.

There is a new requirement that surge protective devices (SPDs) provide an indication that they are ________. (So, they can be replaced when they reach the end of their life.)

When Surge Protective Devices (SPDs) and surge arrestors reach the end of their usable life span they can ________. (The NEC addressing overvoltage now.)

The prohibition against locating branch circuit overcurrent devices in some bathrooms has been expanded to include ________. (Addresses the difficulty with access when occupied.)

Generally, switches containing fuses and circuit breakers shall be readily accessible. An exception would be ________. (This was a problem for certain locations.)

Circuit breakers shall be readily accessible and not need a tool to access it. Exceptions were clarified to now include ________. (An example would be a Type 4x steel panel with bolts around the perimeter.)

The minimum interrupting rating of a branch circuit overcurrent protective device like a circuit breaker is _________. (Existing circuit breakers that are not marked should be considered as 5,000 amperes.)

If one feeder overcurrent protective device (breaker) is required to be selectively coordinated with the service overcurrent device, ________ feeder device(s) supplied by the service shall be selectively coordinated as well. (An overcurrent condition on one of the other feeders can and often does open and trip the service device.)

A new section has clarified that branch circuit overcurrent protective devices, relays and circuit breakers that provide ground fault protection must be ________. (No more counterfeit devices please.)

Provisions were added by CMP-10 to ________ remote access to adjustable trip circuit breakers through the internet. (Adjustments made from your office. Provisions were also added to address cybersecurity.)

Standard ampere ratings for fuses and circuit breakers have changed but do not include a ________ device. (These fuses and circuit breakers are available in the field.)

The maximum continuous load on a 14 AWG Copper-Clad Aluminum conductor shall not exceed ________. (Any circuit breakers must also be listed and marked for use with these conductors.)

An overcurrent device rated 800 amperes or less with an adjustable trip is permitted to be used if the setting does not exceed ________ the conductor capacity. (The means to adjust the setting of the trip must have restricted access.)

A new section identifies Overcurrent Protective Devices (OCPDs) that are permitted to be reconditioned. ________ are permitted to be reconditioned. (When many devices reach the end of their usable life span, they need to be replaced.)

The requirement for surge protection of services has been expanded to include ________. (Also now includes nursing homes.)

A new ________ has become the placeholder for medium voltage branch circuits, feeders, and services over 1,000 volts AC and 1,500 volts DC. (This information was located throughout the NEC before.)

The label marking required on an emergency disconnecting means for a one- and two-family dwelling unit service shall ________. (Also requested by first responders. See also some specific State rules.)

Where equipment for isolation of other energy source systems (such as solar) is not located adjacent to the emergency disconnect for one- and two-family dwelling services, a plaque identifying the location shall be located ________ the disconnecting means. (Comes up a lot more often now.)

When only a service ________ is replaced for a one- and two-family dwelling unit, the outside emergency disconnect requirements shall not apply. (To aid in emergency service damage relief.)

If the required emergency disconnecting means for dwelling units is a meter disconnect, it must be ________ the meter mounting equipment. (This undefined term is often mistakenly thought to be a simple disconnect switch on the supply side of the meter enclosure which is not the intention.)

For a one- and two-family dwelling unit service, an emergency disconnecting means shall be installed in a readily accessible and ________.

The required Emergency Disconnect for a one- and two-family dwelling shall have a short circuit rating ________. (Maybe Fire Fighter Disconnect is a better name? Can smart meters contact utility and have power turned off remotely by fire fighters now? Non-fused disconnects are only rated at 10k.)

The requirements for a one- and two-family dwelling unit demand that an emergency disconnect now specify that it can be installed ________. (Many locations were already requiring this. Also, to provide safety to first responders, pulling the meter under load with an arc was not a good option.)

________ are now permitted to be connected to the supply side of the service disconnecting means.

An exception was added to permit the installation of up to 6 additional service disconnecting means in a single enclosure in ________. (Installed in compliance with editions of the code prior to the 2020 edition.)

Up to 6 disconnects in a service metering center (like for a multifamily apartment structure) is allowed if ________. (Many meter centers do not have individual sections.)

________ were added by CMP-10 to the list of the two to six service disconnects permitted for each service location. (To clarify that they must be listed for service when used as service equipment. Will existing legacy systems be required to be updated when altered?)

All services supplying _________ are now required to be provided with Surge Protection Devices (SPD) inside or immediately adjacent to the service equipment. (The code is concerned about the safety of people and property. This rule helps protect property that is Life Safety such as AFCI’s and smoke detectors.)

An exception to the code section requirement for barriers to be placed in service equipment so that no uninsulated, ungrounded busbar or service terminal is exposed to inadvertent contact includes ________. (This touch safe rule allows small holes for testing. Some say these barriers do not last very long in cold weather.)

Barriers are now required in service equipment in such a way that ungrounded busbars in panels are not exposed to inadvertent contact while being serviced ________. (An amendment has been added to this code section because they forgot the word “energized”.)

________ for splices and taps installed on service entrance conductors shall be listed and marked (suitable for use on the line side of the service equipment.) (Some are only recognized components now. These connections are considered free floated, not connected to an enclosure, with no overcurrent protection device ahead of it.)

________ cable is now allowed as an approved wiring method in the NEC for service entrance 1,000 volts or less. (Many states have additional restrictions.)

The wiring method for service entrance conductors at 1,000 volts or less is limited, ________ are permitted. (See also new Article 371.)

Generally, there should only be one service location on a structure. An exception is a building with two-hour fire walls with more than one occupancy. When there are more than six service disconnect locations, ________.

The minimum clearance of service conductors above roofs has been increased to ________. (It did not make sense for service conductors to have a lower clearance requirement than feeders.)

Circuit conductors other than service conductors shall not be installed in the same ________ as the service conductors. (There have been some issues with generator conductors mixed in with service conductors.)

Where a feeder supplies a ________, a surge protective device (SPD) shall now be installed. (Similar to the requirements for services.)

If more than one emergency disconnecting means is allowed for a dwelling unit supplied by a feeder, they shall be ________.

When a one- and two-family dwelling unit is supplied be a feeder, an emergency main disconnect ________. (Similar to the requirements for dwellings that are supplied by a service.)

Generally, when a building is supplied and served by a feeder, only one is allowed. A new special condition exception to this one main disconnect rule is for ________. (Other feeder supply rules mirror the service rules.)

When determining a load calculation exception on an existing feeder or service that has any renewable energy system connected to it (like Solar Photovoltaic), the calculation ______.

A new section in Article 220 will ________ an Energy Management System (EMS) to be considered and used to reduce the loads on services or feeder calculations. (Malfunction of the system must result in the disconnection of loads.)

When the load for Electric Vehicle Supply Equipment (EVSE) is calculated, it shall be either ________ or the equipment nameplate rating, whichever is larger. (There was a need for the NEC to give guidance here with all the electrical vehicles being added. It is based on a 30 ampere, 240-volt size.)

For dwelling unit load calculations, the NEC permits a reduction of the demand factor of 75 percent to be applied to the nameplate of 4 or more appliances fastened in place. Electric vehicle supply equipment (EVSE) has been added to the list of equipment that is ________ to use the demand factor.

Calculations Table 220.42a received revisions for non-dwelling occupancies. When using this Table, the 125% multiplier for continuous loads ________. (Most of these revisions are load reductions and this change should save money. These discrepancies were a waste of resources.)

For a load calculation on a dwelling unit, the calculated square foot floor area ________ include open porches, or unused space not adaptable for future use. (Even dirt can be adaptable to a future use. A change for garages.)

For the purposes of load calculations, the square footage of a dwelling unit does not include ________. A garage space is now included. With home price increases more people are turning garages into dens, kitchens, and bedrooms.