CAPTAIN CODE ® 2023 NEC Code Changes ® Includes Expert Commentary on Over 80 Code Changes This Guide Contains Licensed NEC Text
Introduction NFPA 70®, also known as The National Electrical Code® (herein after “NEC®”) and the contents of this Pocket Guide are intended for qualified electrical and low-voltage professionals with an existing understanding of electrical theory, terminology and safety practices. This includes electrical inspectors, electrical contractors, electrical engineers and other similarly qualified professionals.
Scope, Purpose and Cautions This Guide was developed to illustrate the primary changes to the 2023 NEC when compared to the 2020 NEC®. This enables electrical and low-voltage professionals to keep informed and stay in Code compliance from one Code cycle to the next. Articles covered primarily relate to Wiring Devices, Over-Current Protection and Communications Systems with limited discussion of Raceways, Wires, Luminaries, Emerging Markets and other mainstream requirements.
Table of Contents Vertical Market Code Article Subject Description Page Number 100 All Definitions in NEC Now Found in Article 100 11 100 Definition - Class 4 Circuits 11 110.21 (A)(2) Reconditioned Equipment 12 110.26 Spaces Around Electrical Equipment 12 110.29 “Within Sight” Defined and Clarified 13 210.8(A) (6)(7) GFCI Requirements in Dwelling Unit 14 Kitchens Modified and Expanded 210.
Table of Contents Vertical Market Code Article Subject Description Page Number 210.70 (A)(2) Lighting Outlet Locations and Limitations 36 215.15 Barriers in Electrical Equipment 38 215.18 (A)-(E) Surge Protection Requirements Expanded 39 220.53 220.57 220.70 Energy Management Systems (EMS) 45 225.41 (A)(B)(C) Emergency Disconnects - 1 and 2 Family Homes 46 225.42 (A)-(E) 230.67 (A)-(E) 6 EVSE Demand Factor Calculations 43 Surge Protection Requirements Expanded 39 230.
Table of Contents Vertical Market Code Article Subject Description Page Number 305 General Requirements for Systems 57 Rated Over 1000 Volts ac, 1500 Volts dc 310.3 (A)(B) 10 Amp Branch Circuits Conductors 26 312.10 314.5 Screws Protruding Into Boxes How Much is Allowable 314.24 (B)(C) Box Depth/Conductor Clearance 62 From Devices - Rear and Side Entry 60 334.15(B) 334.19 Protecting Conductors Bushings and Sheath Length 65 404.
Table of Contents Vertical Market Code Article Subject Description Page Number 406.9(C) Space Around Shower Stalls and Bathtub 73 406.12 Tamper Resistant Requirements Expanded 75 409.70 Surge Protection for Safety 77 Circuits in Industrial Control Panels 410.71 Disconnecting Means for Double-Ended Fluorescent or LED Lamps 78 411.3 Voltage Limitations on Low-Voltage Lighting 79 422.18(B) Locating Paddle Fans in Bathrooms 80 424.48 Requirements for Heating Cables in Walls 81 430.
Table of Contents Vertical Market Code Article Subject Description Page Number 625.40 Electric Vehicle Branch Circuit 98 625.42 (A)(B) Sizing EVSE Load According to Energy Management System 98 625.43 EVSE Disconnecting Means 98 625.49 Bi-Directional EVSE Power – “Island Mode” 101 630.8 GFCI Protection for Receptacles Used for Hand Tools in Welding Areas 102 680.5 (A)(B)(C) GFCI and SPGFCI for Swimming Pools and Similar Installations 102 680.
Revision 100 Definitions Change Summary • All definitions will now be located in Article 100. In previous code cycles, definitions could be found throughout the code. In addition, and as a result, the subdivisions within Articles were removed. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. 100 Definitions Part I. General.
continued from page 11 Devices, Receivers, Transmitters, etc. If you are involved in this work, please reference Article 726 in this guide and the actual NEC 70. Revision 110.21(A)(2) Reconditioned Equipment Leviton Comment: Article 110.21(A)(2) is covered with Article 240.2 found on page 53 Revision 110.26 Spaces About Electrical Equipment Change Summary • Revision made to ensure ample space around equipment.
that it relates to more than just working space width. This revision also clarifies the condition caused by open equipment door(s) which would impede access to and egress from the working space. New and Revision 110.29 “Within Sight” Defined and Clarified Change Summary • The term “Within Sight” has been used many times previously in the NEC. Now the term has been defined and clarified as being within a distance of not more than 50 feet from the equipment it serves.
Revision 210.8(A)(6)(7) GFCI Requirements in Dwelling Unit Kitchens Modified and Expanded Change Summary • The GFCI requirements for receptacles in kitchens expanded to include all 125 – 250V receptacles 150V to ground or less, not just those that serve countertop surfaces. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved.
continued from page 14 Leviton Solution While GFCI Receptacles are required by Code, USB receptacles are required by people. Leviton brings it all together with the new 15A and 20A SmartlockPro® Self-Test GFCI Combination 24W(4.8A) Type A/C USB In-Wall Charger Outlet. • SAFE — Delivers continuous ground fault protection, automatically Cat. No.
NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 210 Branch Circuits Not Over 1000 Volts ac, 1500 Volts dc, Nominal 210.8 Ground-Fault Circuit-Interrupter Protection for Personnel. (B) Other Than Dwelling Units.
New 210.8(B)(13) GFCI Protection for Non-Dwelling Aquariums and Bait Wells Change Summary • The GFCI requirements for receptacles within 6 ft of fish tanks and bit wells. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 210 Branch Circuits Not Over 1000 Volts ac, 1500 Volts dc, Nominal 210.
Available in 15 or 20 Amp, 125 volt, features self-test circuitry and slim design. For Residential/Commercial applications, back and side wired. • Weather-resistant with stainless steel strap and screws, cold impact resistant face and button • SAFE — Delivers continuous ground fault protection • SELF TESTING — Automatically self-tests to ensure it can respond to ground fault • SIMPLE — Status indicator light provides simple, intuitive feedback Cat. No. GFRW2-W New 210.
continued from page 19 for specific appliances is located in the branch circuit or outlet to provide protection for the listed appliances regardless of vintage and whether or not GFCI protection is included in the appliance or in the cord. This revision adds clarity to what specific appliances shall be required to have GFCI protection and the methods the installer can use to provide this GFCI protection. Due to the nature of the hazard with these installations, this requirement was placed in 210.
NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 210 Branch Circuits Not Over 1000 Volts ac, 1500 Volts dc, Nominal 210.8 Ground-Fault Circuit-Interrupter Protection for Personnel. (F) Outdoor Outlets. For dwellings, all outdoor outlets, other than those covered in 210.8(A), Exception No.
continued from page 21 Leviton Solution The Leviton line of GFCI receptacles offer installation advantages over the competition. Slim Profile for Easier Installation Leviton SmartlockPRO® GFCI outlets feature the slimmest profile on the market for easy installation, every time. Our GFCIs sit closer to the wallplate for a polished appearance. Extra room for new construction and retrofit applications. Only 1.026'' protrusion into wallbox. New 210.
Expert Analysis A revision has been made to clarify that the required receptacle outlets from 210.52(G)(1) must be served from at least one 120-volt, 20-ampere branch circuit, and that this 20-ampere branch circuit is also permitted to serve other receptacle outlets within the garage. Other kinds of outlets within the garage or in other space(s) not included by Exception 1 are prohibited from being connected to the required 120-volt, 20-ampere branch circuit.
continued from page 23 Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. NEC® Text in fire stations, police stations, ambulance stations, rescue stations, ranger stations, and similar locations.
Function AFCI/GFCI Receptacle offers a National Electrical Code® (NEC®) compliant option for AFCI/ GFCI protection in residential kitchens and laundry areas for new construction, modifications/extensions and replacement receptacles. It is also ideal as a replacement for ungrounded receptacles, satisfying NEC® requirements for both AFCI and GFCI protection. Leviton’s AGTR1 is rated at 15-Amp, 125-Volt, 20-Amp Feed-Through. It is Tamper-Resistant, back and side wired and a self-grounding clip is included.
continued from page 25 guidance in the application of this section. The revision was made to distinguish between facilities that are equipped with or without permanent cooking apparatus. Revision/New 210.23(A)(1)(2), 210.24, 240.4(D)(3), 310.3 (A)(B) and 406.3(C)(D) 10 Amp Branch Circuits Leviton Comment: Articles 210.23(A)(1)(2), 210.24, 240.4(D)(3), 310.3(A)&(B) and 406.3 (summarized here) have been revised to include accommodations for 10 amp circuits and associated electrical apparatus.
continued from page 26 There are additional places in the 2023 NEC where 10 Amp circuits and aluminum wire are added, however due to space limitations in this guide we only cover these. We think that this is adequate to convey the intent. Change Summary • The NEC is introducing text to recognize 10 Amp circuits with limitations. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition.
NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. that required by 240.4(D)(1) through (D)(8) after any correction factors for ambient temperature and number of conductors have been applied. (3) 14 AWG Copper-Clad Aluminum.
continued from page 29 requirements for loads permitted and not permitted for 10-ampere branch circuits. The application of adopted Energy Code(s) and energy efficiencies in general are bringing forward the possible applications of 10-ampere branch circuits for loads such as LED lighting and specific equipment that are identified. A new chart was added at 210.24(2) that identifies appropriate aluminum and copper clad aluminum wire sizing for specific circuit sizes. Revison/New 210.
island or peninsula, for future addition of a receptacle outlet to serve the island or peninsular countertop or work surface. If receptacles are installed in countertop or work surface areas, the receptacles must be listed for the purpose, and they are not permitted to be installed on the sides of the cabinet below the countertop.
continued from page 31 smart chip that recognizes and optimizes the charging power of your electronic devices for fast and efficient charging. The latest offering incorporates “Type C” ports which many newer phones call for. The Type C platform gives increased power and faster charges. Leviton USB devices are available in many configurations and many colors and Hospital Grade.
Revision 210.52(G) Receptacle Requirements in Residential Basements, Garages, and Accessory Buildings Change Summary • A receptacle installed for permanent premises security system doesn’t count toward required receptacle requirements for basements, garages, and accessory buildings. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA.
continued from page 33 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 210 Branch Circuits Not Over 1000 Volts ac, 1500 Volts dc, Nominal 210.70 Lighting Outlets Required. Lighting outlets shall be installed where specified in 210.70(A), (B), and (C).
continued from page 34 Leviton Note: The Leviton solution provided below relates to Leviton’s current line of battery switches. PLEASE NOTE that at the time this guide was printed these devices DO NOT default to the “ON” position when the battery dies.
NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 210 Branch Circuits Not Over 1000 Volts ac, 1500 Volts dc, Nominal 210.70 Lighting Outlets Required. (A) Dwelling Units. (2) Additional Locations.
continued from page 37 Expert Analysis A revision has been made to clarify that accessory structures are similar to attached and detached garages and have been added to the list in Section 210.70(A)(2). Requiring lighting in these areas enhances safety. In addition, the exception to (2) recognizes bulkhead doors with stairway access to basements. The NEC clarifies that they want these steps illuminated and controlled by a switch.
NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. contact by persons or maintenance equipment while servicing load terminations in panelboards, switchboards, switchgear, or motor control centers supplied by feeder taps in 240.21(B) or transformer secondary conductors in 240.
continued from page 39 Change Summary • Surge protection requirements have been expanded to dormitories, guest rooms/suites of hotel/motels and sleeping rooms of nursing homes and limited care facilities. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved.
SURGE PROTECTION is required for Safety Circuits Protect valuable equipment and electronics. LEVITON.
continued from page 40 new and significant change from the previous 2020 NEC language. Leviton Solution Type 2 Surge Protection Devices (SPDs) would typically be the type of device most often associated with this Code article. See Type 2 Below. Here we have provided an explanation of the different levels of surge protection and their applications: Type 1 SPDs for the supply side of service entrance.
Revision/New 220.53, 220.57 EVSE Demand Factor Calculations Leviton Comment: This guides purpose is to simplify and condense the NEC changes. In that spirit we have merged Articles 220.53 and 220.57. This was done because they both relate to load calculations for EVSE. Placing both articles here in one passage hopefully simplifies understanding to readers. Change Summary • As electric vehicles increase in popularity, guidelines for installing supply equipment is critical.
continued from page 43 To do load calculations for EVSE, a new section has been added that dictates that the load shall be calculated at either 7200 watts (volt-amperes) or the nameplate of the equipment, whichever is larger. The 7200 watt (volt-amperes) minimum requirement is based on a 30 ampere, 240 volt, single-phase circuit. Leviton Solution Leviton offers EVSE for residential and commercial applications.
Revision/New 220.70 Energy Management Systems (EMS) Change Summary • New section classifies a single value equal to the maximum ampere setpoint of the energy management system shall be permitted to be used in load calculations for the feeder or service. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved.
continued from page 45 usage through submetering strategies, which track energy usage and power consumption for individual tenants, departments, and pieces of equipment or other loads to account for their actual energy usage. From tenant billing to energy measurement & verification (M&V), Verifeye™ offers a seamless solution that enables smart metering and simplifies the complexities of monitoring energy usage, allocating energy costs and billing tenants. New 225.
EV CHARGING FROM THE BRAND YOU TRUST Home Charging Stations • • • • • Level 2 - 80, 48 & 32 Amp Modern look and feel Fast and secure charging Optional access control via RFID For indoor and outdoor use LEVITON.
continued from page 46 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. front of the disconnect enclosure with red background and white text. (2) The letters shall be least 13 mm (1/2 in.) high.
continued from page 48 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 230 Services 230.85 Emergency Disconnects. For one- and two-family dwelling units, an emergency disconnecting means shall be installed. (A) General. (1) Location.
NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. (2) Meter disconnects installed in accordance with 230.
Protect valuable equipment and electronics Your last line of defense in protection. LEVITON.
Revision/New 110.21(A)(2), 240.2, 404.16(A)(B)(C)(D) and 406.2 Reconditioned Equipment Change Summary • The NEC has changed and added to the list of what types of electrical equipment can and can’t be reconditioned throughout the Code. The equipment identified here are the most commonly used in everyday installations. Do to space constraints in this guide, we did not list all of the less common equipment but if reconditioning is your thing, you may want to look to 410.2 (Lamps), 411.
continued from page 53 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. 210.15 Reconditioned Equipment. (A) Reconditioning Not Permitted.
at electrical installers, inspectors and alike. It’s unclear how many of these individuals are doing reconditioning to the level described in these code articles (probably few to none). Some inspectors interpret reconditioning as when an installer installs a device outside of the manufacturer’s instructions, thus in a different condition or reconditioned.
continued from page 55 or locker rooms with showering facilities, as they represent similar hazards. This revision recognizes the difficulty of accessing occupied bathrooms. Supplemental overcurrent devices are allowed. Examples of supplemental overcurrent devices are identified in illustration below. Leviton Solution See for yourself why The Award-Winning Leviton Load Center has been called a breakthrough in Load Centers.
How to Make a Leviton Load Center Smart 1 2 3 Install the Hub Add Smart Circuit Breakers Connect with the My Leviton app Energy Use • View real-time energy consumption: total aggregate, individual circuit, or trends by week, month, and year • Calculate your approximate total energy cost per month Control • Remotely turn OFF any circuit breaker Alerts & Updates • Know when and why a circuit breaker trips • View system status in real time and detect if critical loads need to be addressed • Be infor
continued from page 57 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. 245.2 Reconditioned Equipment. 245.21 Circuit-Interrupting Devices. 245.26 Feeders and Branch Circuits. 245.27 Additional Requirements for Feeders.
Revision 300.14 Clarification of 6” Out of Box Conductors Rule… Spliced or Unspliced? Change Summary • A new sentence was added to clarify that the mandatory 6 inches of conductors out of the box can be spliced or unspliced. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved.
Revision/New 305 General Requirements – Systems Over 1000V ac/1500V dc Leviton Comment: Article 305 is covered with Article 245 on page 57. Revision/New 310.3(A)(B) Reconditioned Equipment Leviton Comment: Article 310.3(A)(B) is covered with Article 210.23(A) found on page 26. Revision/New 312.10, 314.5 Screws Protruding into Boxes – How Much is Allowable Leviton Comment: We are covering Articles 312.10 and 314.5 together because they are very similar, and both relate to screws protruding into boxes.
NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. comply with the following as applicable.: (1) Screws shall be machine type with blunt ends. (2) Other fasteners shall have blunt ends. (3) Screws attaching a cover shall extend no more than 10 mm (3/8 in.).
continued from page 61 Revision/New 314.24(B)(C) Box Depth/Conductor Clearance from Devices - Rear and Side Entry Change Summary • The NEC has set direction on conductors entering boxes NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved.
Article 406.4 SUPERIOR PERFORMANCE Concrete Floor Box Cover Plates are tested to a higher standard. • Forged brass ultra heavy-duty cover plates can withstand a beating. • Meet or exceed UL scrub water testing • Backed by industry leading warranties LEVITON.
continued from page 62 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. (1) The rearward projection of the device or equipment shall not extend beyond the centerline of the wiring knockout or other entry. (2) The clearance from the box wall to the installed device or equipment shall be not less than 13 mm (1/2 in.).
Revision/New 334.15(B), 334.19 Protecting Conductors – Bushings and Sheath Length Change Summary • The NEC has added language intended to protect conductors. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 334 Nonmetallic-Sheathed Cable: Types NM and NMC 334.15 Exposed Work. (B) Protection from Physical Damage.
continued from page 65 protection of the insulated conductors when they enter any type of electrical component. A new sentence has been added at 334.19 to provide consistency with other abrasion protection requirements when cable is installed in conduit or tubing. Revision/New 404.14(D), 406.3(D) Switches and Receptacles with Push-In Terminals & Wire Types Leviton Comment: To simplify and condense content in this guide we combine Articles 404.14(D) and 406.3(D). The text is very similar except 404.
NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. be used with aluminum, copper, and copper-clad aluminum conductors.
Revision 406.3(D) Receptacle Terminations Leviton Comment: Article 406.3(D) is covered with Article 404.14(D) on page 66. New 406.
Expert Analysis A new subsection has been added to clarify the requirements for protection of floor receptacles. The addition of GFCI protection of all 125-volt, single-phase, 15- and 20-ampere floor receptacles installed in specified locations is intended to provide public protection against potential electric shock due to accidental spillage of refreshments. Leviton Solution Leviton offers floor boxes for residential and commercial applications including food courts.
continued from page 69 accepted and added ty the CMP to address the use of spring-tension contacts with power receptacle faceplate accessories. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 406 Receptacles, Cord Connectors and Attachment Plugs (Caps) 406.6 Receptacle Faceplates (Cover Plates).
Revision 406.9(A)(B) While-in-Use Cover Requirements Change Summary • Revision made regarding how much bubble type covers must open. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 406 Receptacles, Cord Connectors and Attachment Plugs (Caps) 406.9 Receptacles in Damp or Wet Locations. (A) Damp Locations.
continued from page 71 Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. NEC® Text Exception: 15- and 20-ampere, 125- through 250-volt receptacles installed in a wet location and subject to routine high-pressure spray washing shall be permitted to have an enclosure that is weatherproof when the attachment plug is removed.
Revision 406.9(C) Space Around Shower Stalls and Bathtub Change Summary Revision made to clarify that receptacles shall not be installed inside of the tub or shower or within a zone measured 3 Ft. (900 mm) horizontally from any outside edge of the bathtub or shower stall, which includes the space outside the bathtub or shower stall below the 8 ft. zone. For a Smart toilet, see Ex. 4 to 406.9(C).
continued from page 73 Expert Analysis A revision has been made to clarify that receptacles shall not be installed inside of the tub or shower or within a zone measured 3 ft (900 mm) horizontally from any outside edge of the bathtub or shower stall, which includes the space outside the bathtub, or shower stall, or within the space below the zone. A new exception 4 has been added to recognize, that it is quite common for a toilet to be located next to a bathtub or shower in a residential bathroom.
Revision 406.12 Tamper-Resistant (TR) Receptacle Requirements Expanded Change Summary • The places where TR receptacles are required has been revised and expanded. Among the new areas are nursing homes, fitness centers, substance abuse/rehab, foster care, psych hospitals, and areas of agricultural buildings that are accessible to the general public. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition.
continued from page 75 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Informational Note No. 3: Areas of agricultural building are frequently converted to hospitality areas. These areas can include petting zoos, stables, and buildings used for recreation or educational purposes where receptacles are installed.
New 409.70 Surge Protection for Safety Circuits in Industrial Control Panels Change Summary • New section calls for surge protection of safety circuits within control panels. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 409 Industrial Control Panels 409.70 Surge Protection.
New 410.71 Disconnecting Means for Double-Ended Fluorescent or LED Lamps Change Summary • New section addresses disconnecting means for double-ended lamps — LED and Fluorescent. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 410 Luminaires, Lampholders, and Lamps 410.
accident. Lighting systems have evolved since that time, and fluorescent lamps are being discontinued and replaced with LED lamps to meet energy conversion requirements. The additional requirements have been added to address hazards that would exist with either style luminaire. The requirements have been expanded to address LED type luminaires that are equivalent to fluorescent luminaires that utilize double-ended lamps. New 411.
continued from page 79 Expert Analysis A new section has been added to address the voltage limitations for low-voltage lighting systems and their associated components. New 422.18(B) Locating Paddle Fans in Bathrooms Change Summary • The NEC has set boundary limitations between paddle fans and bathtub or shower. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition.
Expert Analysis A new subsection has been added to address the requirements pertaining to ceiling-suspended (paddle) fans located in bathrooms and shower spaces. New 424.48 Requirements for Heating Cables in Walls Change Summary • It seems that heating cables are now being installed in walls, so the NEC is addressing it with new requirements. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition.
continued from page 81 on, or behind walls. Also, review 424.93(C) for similar installation requirements. 424.38(B)(6) Prohibits heating cables behind tubs and showers TION VIOLA Revision 430.6(A) Sizing Conductors and Switches for Motors Change Summary • The NEC has made a revision to clarify when to use table values or nameplate when sizing conductors, switches and other electrical apparatus for motors.
NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved.
continued from page 83 Sizing Using Nameplate Leviton Solution Powerswitch® Manual Motor Controllers Heavy-duty horsepower rated switches capable of providing manual ON/OFF control to higher motor loads than standard toggle switches. Built for commercial and industrial installations up to 60 Amps, Leviton offers a line of industrial grade AC single-phase and three-phase manual motor controllers with a continuous current rating at all voltages up to 600V AC and maximum horsepower ratings of 30HP.
NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. 440.11 General. Disconnecting means shall be capable of disconnecting air-conditioning and refrigerating equipment, including motor-compressors and controllers, from the circuit conductors.
continued from page 85 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. is located within the generator, a field applied label meeting the requirements of 110.21(B) shall be provided indicating the location of the generator disconnecting means. (B) Generators Installed in Parallel.
• Remote monitoring — includes data like liquid accumulation, enclosure temperature and humidity, line- and load-side voltage values, ground continuity, and more. Access this data 24/7 and get notified of any abnormal operating conditions via the Inform™ app (mobile or laptop) or your existing automation system. Revision 445.
continued from page 87 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. label shall meet the requirements of 110.21(B). Expert Analysis A revision has been made to separate the generator emergency shutdown and disconnect requirements for clarity.
NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 495 – Equipment Over 1000 Volts ac, 1500 Volts dc, Nominal Part I. General. 495.1 Scope. 495.2 Reconditioned Equipment. 495.3 Other Articles. Part II. Equipment - Specific Provisions. 495.22 Isolating Means. 495.23 Voltage Regulators. 495.24 Minimum Space Separation. 495.
continued from page 89 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. 495.73 Pressure and Temperature Limit Control 495.74 Bonding. Expert Analysis This new article is very broad, lengthy, and specific to equipment over 1000 volts AC and 1500 volts DC.
• Leviton’s line of Portable GFCI’s come in many configurations for all stage applications. Now sleeker and more rugged than ever! And, while these devices are fully OSHA compliant for use on job sites, they are also perfect for use in a variety of temporary power applications, such as recreation vehicles, marine vehicles, portable pools, portable generators, submersible pumps, vending machines and more. Revision 551.
continued from page 91 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. These electrical supplies shall be permitted to include additional receptacles that have configurations in accordance with 551.81. The weather-resistant requirement for 50-ampere, 125/250-volt receptacles shall become effective January 1, 2026.
Cat. No. GFWR2 Cat. No. W7313 Cat. No. W0279 20-Amp, 125-Volt, Weather-Resistant. Self-Test Receptacle 30-Amp, 125-Volt, Industrial Grade Flush Mount Weather-Resistant Receptacle 50-Amp 125/250-Volt, Industrial Grade Flush Mount Weather-Resistant Receptacle Revision 555.4 Service Equipment Location for a Floating Structure Change Summary • Revision clarifies the distance for the service equipment location and height above the electrical datum plane.
continued from page 93 New 555.14 Equipotential Planes and Bonding of Equipotential Planes in Marinas Change Summary • New article defines and explains Equipotential Planes. Please note that it is different than an Electrical Datum Plane. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved.
Article 555.36 DESIGNED FOR SUPERIOR PERFORMANCE Stainless Steel & Non-Metallic Disconnects. Smart. Rugged. Dependable. LEVITON.
continued from page 94 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. and controls that are likely to become energized and are accessible to personnel. The equipotential plane shall encompass the area around the equipment and shall extend from the area directly below the equipment out not less than 900 mm (36 in.
NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. or replacements of electrical enclosures, devices, or wiring methods are necessary on a docking facility, they shall be required to comply with the requirements of this Code and the installation shall require an inspection of the circuit.
continued from page 97 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. The emergency shutoff device or electrical disconnect shall de-energize the power supply to all circuits supplied by the marina power outlet(s) or enclosure(s) that provide shore power to boats. A circuit breaker handle shall not be used for this purpose.
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continued from page 98 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Exception: Branch circuits shall be permitted to feed multiple EVSE’s as permitted by 625.42(A) or (B) 625.42 Rating. The EVSE shall have sufficient rating to supply the load served.
Leviton Solution Leviton offers EVSE for residential and commercial applications. Below we have identified part our commercial EVSE solution. Download the ChargePoint App to see public chargers in your area Evr-Green® 4000 Level 2 Public Use Charging Stations Evr-Green® DC Public Use Charging Stations Catalog #: Evr-Green 4000* 30 Amp, 208/240 VAC, 7.
New 630.8 GFCI Protection for Receptacles Used for Hand Tools in Welding Areas Change Summary • New subsection requiring GFCI protection for receptacles powering hand tools and portable lighting in welding areas. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 630 Electric Welders 630.
continued from page 102 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. article, ground-fault protection of receptacles and outlets on branch circuits rated 150 volts or less to ground and 60 amperes or less, single- or 3-phase, shall be provided with a Class A GFCI.
continued from page 104 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. and Chillers. Electrically powered swimming pool heat pumps and chillers using the circulating water system and providing heating, cooling, or both, shall be listed and rated for their intended use.
It would not apply to an equipment room for a spa or hot tub, fountain, etc. An equipment room for fountain pumps, chlorinators, etc. is common at hotels and other installations. This type of equipment room should also have a GFCI protected receptacle. A GFCI protected receptable is needed for installers and maintainers who service equipment in these rooms. Leviton Solution When it comes to outdoor GFCI protection, it’s smart to choose SmartlockPro® GFCIs.
continued from page 107 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Special Purpose Ground-Fault Circuit-Interrupter (SPGFCI) Protection. All receptacles rated 125 volts through 250 volts, 60 amperes or less, located within 6.0 m (20 ft.) of the inside walls of a pool shall have GFCI protection complying with 680.
and equipment, prior to it being placed into active service (CMP-13)”. This seems to go beyond installing and testing to ensure the system works. On more complex systems commissioning is often done with a manufacturers rep, the installer and the facility manager. The facility manager typically learns proper use of the system. All this is good practice, but all this hand-holding takes time, and time is money. Installers will need to take this into consideration when bidding these jobs.
continued from page 109 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. other Class 2 circuits. Separation from other circuits shall comply with 725.136. (D) Protection. Wiring shall comply with the requirements of 300.4 and be installed in a raceway, armored or metalclad cable, or cable tray. Exception No. 1: Section 700.
LEVITON NETWORK SOLUTIONS Leviton is your customer-focused single-source global manufacturer of end-to-end cabling systems delivering the highest return on your infrastructure investment. Learn more about Leviton solutions and support at Leviton.com/NS © 2022 Leviton Manufacturing Co., Inc.
New 722 Cables for Power-Limited Circuits and Fault-Managed Power Circuits 724 Class 1 Power-Limited Circuits and Remote Control & Signaling Circuits 726 Class 4 Fault Managed Power Systems Change Summary • Power limited circuits are being utilized more often due to emerging new technologies like Power Over Ethernet (POE) and others. The NEC recognizes this and revised/ added new text to ensure best installation practices.
Learn to build a safe, green tomorrow today. In an environment of rapid changes, new platforms and revised regulations, the more you know, the safer we are. Leviton’s ez-Learn™ suite of Product Training Courses, Boot Camp Videos, Webinars, Smart Promotions and more, keeps you on top of the latest tools and trends — and ahead of the competition. Available to anyone, on any device, anytime, anywhere. Learn more at www.leviton.com/ezlearn ez-Learn™ Training Platform.
continued from page 112 NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. 724.45 Class 1 Circuit Overcurrent Device Location. 724.46 Class 1 Circuit Wiring Methods. 724.48 Conductors of Different Circuits in the Same Cable, Cable Tray, Enclosure, or Raceway. 724.49 Class 1 Circuit Conductors. 724.
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continued from page 114 laser optimized multimode and OS2 single-mode, Leviton has the ideal cabling solution for the most demanding networks around the globe. When building your high-performance network think of Berk-Tek and Leviton, two of the most innovative, reliable, and service-oriented names in the industry.
Revision/New 800.3(H) Grounding of Metal Shields of Communications Cables Change Summary • New subsection addresses requirements of grounding shields in communications systems. NEC® Text Material taken from the National Electric Code® is reprinted with permission from NFPA 70®, 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved. Article 800 General Requirements for Communications Systems 800.3 Other Articles.
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