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NEC Reference Cards

2023 NEC Reference Cards - Current Edition

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  • Description

    Access essential NEC® tables and content quickly and conveniently with go-anywhere 2023 NEC Reference Cards.

    It’s vital that electrical professionals follow NFPA 70®, National Electrical Code® (NEC), requirements to help ensure safe and compliant installations. NEC Reference Cards include 13 waterproof and durable 3.5ʺ x 5.5ʺ cards displaying the commonly used tables from the code. The all-new set features updated table numbers, titles, column headings, and footnote content to correspond with the significantly revised 2023 edition of the NEC.

    The following NEC tables are included in the set:

    • Table 250.66: Grounding Electrode Conductor for Alternating-Current Systems
    • Table 250.102(C)(1): Grounded Conductor, Main Bonding Jumper, System Bonding Jumper, and Supply-Side Bonding Jumper for Alternating-Current Systems
    • Table 250.122: Minimum Size Equipment Grounding Conductors for Grounding Raceway and Equipment
    • Table 300.5: Minimum Cover Requirements, 0 to 1000 Volts ac, 1500 Volts dc, Nominal, Burial in Millimeters (Inches)
    • Table 310.12(A): Single-Phase Dwelling Services and Feeders
    • Table 310.15(B)(1)(1): Ambient Temperature Correction Factors Based on 30°C (86°F)
    • Table 310.16: Ampacities of Insulated Conductors with Not More Than Three Current-Carrying Conductors in Raceway, Cable, or Earth (Directly Buried)
    • Table 314.16(A): Metal Boxes
    • Table 430.52(C)(1): Maximum Rating or Setting of Motor Branch-Circuit Short-Circuit and Ground-Fault Protective Devices
    • Table 430.250: Full-Load Current, Three-Phase Alternating-Current Motors
    • Table 450.3(B): Maximum Rating or Setting of Overcurrent Protection for Transformers 1000 Volts and Less (as a Percentage of Transformer-Rated Current)
    • Selected sections from Chapter 9, Table 4: Dimensions and Percent Area of Conduit and Tubing (Areas of Conduit or Tubing for the Combinations of Wires Permitted in Table 1, Chapter 9)
    • Selected sections from Chapter 9, Table 5: Dimensions of Insulated Conductors and Fixture Wires
    • Summary of Tap Conductor Requirements

    Stay up to date and compliant with the most current edition of NFPA 70, NEC, with Reference Cards based on the 2023 edition. Place your order today. (Includes 13 waterproof cards, 3.5" x 5.5" each, 2023)

  • Prior Editions

    2020 Edition

    Quickly and conveniently access the most frequently used NEC tables with 2020 NEC Reference Cards.

    NEC® Reference Cards help electrical contractors and installers increase accuracy, safety, and efficiency by providing on-the-job access to 13 of the most frequently referenced tables in the NEC, 2020 edition. These double-sided, laminated cards fit comfortably in your pocket or clip on to your belt or toolbox using the included one-inch metal ring.

    NEC Reference Cards are waterproof and extremely durable. The lightweight design and compact 3.5" x 5.5" size make it a go-anywhere resource for electrical professionals. Bring the complete set of cards with you or just the ones you need for the particular task at hand.

    The all-new set features updated and expanded table titles, column headings, and footnote content based on the 2020 edition of the NEC.

    Work faster and more accurately by keeping the information you need most at your fingertips.

    NEC Reference Cards cover the following tables and content:

    • TABLE 250.66: Grounding Electrode Conductor for Alternating-Current Systems
    • TABLE 250.102(C)(1): Grounded Conductor, Main Bonding Jumper, System Bonding Jumper, and Supply-Side Bonding Jumper for Alternating-Current Systems
    • TABLE 250.122: Minimum Size Equipment Grounding Conductors for Grounding Raceway and Equipment
    • TABLE 300.5: Minimum Cover Requirements, 0 to 1000 Volts, Nominal, Burial in Millimeters (Inches)
    • TABLE 310.12: Single-Phase Dwelling Services and Feeders
    • TABLE 310.15(B)(1): Ambient Temperature Correction Factors Based on 30°C (86°F)
    • TABLE 310.16: Ampacities of Insulated Conductors with Not More Than Three Current-Carrying Conductors in Raceway, Cable, or Earth (Directly Buried)
    • TABLE 314.16(A): Metal Boxes
    • TABLE 430.52: Maximum Rating or Setting of Motor Branch-Circuit Short-Circuit and Ground-Fault Protective Devices
    • TABLE 430.250: Full-Load Current, Three-Phase Alternating-Current Motors
    • TABLE 450.3(B): Maximum Rating or Setting of Overcurrent Protection for Transformers 1000 Volts and Less (as a Percentage of Transformer-Rated Current) Summary of Branch Circuit Requirements
    • Selected sections of CHAPTER 9, TABLE 4: Dimensions and Percent Area of Conduit and Tubing (Areas of Conduit or Tubing for the Combinations of Wires Permitted in Table 1, Chapter 9)
    • Selected sections of Chapter 9, TABLE 5: Dimensions of Insulated Conductors and Fixture Wires
    • Summary of Tap Conductor Requirements

    Bring NEC Reference Cards everywhere your job takes you.

    Stay up to date and compliant with the most current edition of NFPA 70®, NEC, with Reference Cards based on the 2020 edition. Place your order today. (Includes 13 cards, 3.5" x 5.5" each, 2020)

    2017 Edition

    2017 NEC® Reference Cards provide fast and easy access to the most essential NEC tables for electrical contractors and installers.

    Keep installations right on the money with 13 frequently referenced NEC tables printed on durable waterproof NEC Reference Cards. Based on the 2017 edition of NFPA 70®, National Electrical Code®, double-sided Reference Cards are lightweight and compact enough to fit into a pocket. They also easily attach to your belt or toolbox using the 1" ring-clip (included). Carry all the cards or just those you need on a particular job.

    Save time and improve accuracy with handy access to the NEC tables that contractors and installers reference most often in the field:

    • TABLE 250.66 Grounding Electrode Conductor for Alternating-Current Systems
    • TABLE 250.102(C)(1) Grounded Conductor, Main Bonding Jumper, System Bonding Jumper, and Supply-Side Bonding Jumper for Alternating-Current Systems
    • TABLE 250.122 Minimum Size Equipment Grounding Conductors for Grounding Raceway and Equipment
    • TABLE 300.5 Minimum Cover Requirements, 0 to 1000 Volts, Nominal, Burial in Millimeters (Inches)
    • TABLE 310.15(B)(2)(a) Ambient Temperature Correction Factors Based on 30°C (86°F)
    • TABLE 310.15(B)(7) Conductor Sizes for 3-Wire, Single-Phase Dwelling Services and Feeders.
    • TABLE 310.15(B)(16) (formerly Table 310.16) Allowable Ampacities of Insulated Conductors Rated Up to and Including 2000 Volts, 60°C Through 90°C (140°F Through 194°F), Not More Than Three Current-Carrying Conductors in Raceway, Cable, or Earth (Directly Buried), Based on Ambient Temperature of 30°C (86°F)
    • TABLE 314.16(A) Metal Boxes
    • TABLE 430.52 Maximum Rating or Setting of Motor Branch-Circuit Short-Circuit and Ground-Fault Protective Devices
    • TABLE 430.250 Full-Load Current, Three-Phase Alternating-Current Motors
    • TABLE 450.3(B) Maximum Rating or Setting of Overcurrent Protection for Transformers 1000 Volts and Less (as a Percentage of Transformer-Rated Current) Summary of Branch Circuit Requirements
    • Selected sections of CHAPTER 9, TABLE 4 Dimensions and Percent Area of Conduit and Tubing (Areas of Conduit or Tubing for the Combinations of Wires Permitted in Table 1, Chapter 9)
    • Selected sections of Chapter 9, TABLE 5 Dimensions of Insulated Conductors and Fixture Wires
    • Summary of Tap Conductor Requirements 

    Includes 13 cards, 3.5" x 5.5" each, 2017

  • Also in NFPA 70: National Electrical Code (NEC)