--- title: NEC Code description: PowerCalc is designed for NEC compliance and compliance with many code requirements including IEEE. --- [![Powercalc_Logo.png](https://www.powercalc.co/hs-fs/hubfs/Images/Powercalc_Logo.png?width=592&height=91&name=Powercalc_Logo.png "Powercalc_Logo.png")](https://www.powercalc.co) # Nec code # **Compliance with NEC and Other Code Requirements*** * *PowerCalc* automatically applies many requirements including: **Items in blue are automatic calculations exclusive to PowerCalc.* | **IEEE 141 ** | **Recommended Practice for Electric Power Distribution for Industrial Plants** | | --- | --- | | **NEC Article 110** | **Requirements for Electrical Installations** | | --- | --- | | NEC 110.4 | Voltages | | NEC 110.6 | Conductor Sizes* | | NEC 110.9 | Interrupting Rating | | **NEC Articles 210** | **Branch Circuits** | | --- | --- | | NEC 210.3 | Rating | | NEC 210.8 | Ground Fault Circuit Interrupter Protection for Personnel* | | NEC 210.10 | Ungrounded Conductors Tapped from Grounded Systems | | NEC 210.12 | Arc Fault Current-Interrupter Protection* | | NEC 210.19 | Conductors Minimum Ampacity and Size* | | NEC 210.20 (A) | Overcurrent Protection Continuous and Non continuous Loads* |   | **NEC Article 215** | **Feeders** | | --- | --- | | NEC 215.2 | Minimum Rating and Size* | | NEC 215.2 A (3) | Minimum Rating and Size: Individual Dwelling Unit or Mobile Home Conductors | | NEC 215.3 | Overcurrent Protection* | | NEC 215.4 | Feeders with Common Neutral Conductor | | NEC 215.5 | Diagrams of Feeders | | NEC 215.9 | Ground Fault Circuit Interrupter Protection for Personnel* | | NEC 215.10 | Ground Fault Protection of Equipment* |   | **NEC Article 220** | **Branch Circuit, Feeder, and Service Calculations** | | --- | --- | | NEC 220.5 | Calculations | | NEC 220.12 | Lighting Load for Specified Occupancies | | NEC 220.14 | Other Loads All Occupancies | | NEC 220.16 | Loads for Additions to Existing Installations* | | NEC 220.18 | Maximum Loads | | NEC 220.40 | Feeder and Service Load Calculations* | | NEC 220.42 | General Lighting* | | NEC 220.44 | Receptacle Loads Other Than Dwelling Units | | NEC 220.50 | Motors | | NEC 220.51 | Fixed Electric Space Heating | | NEC 220.52 | Small Appliance and Laundry Loads: Dwelling Unit | | NEC 220.53 | Appliance Load: Dwelling Unit(s) | | NEC 220.54 | Electric Clothes Dryers-Dwelling Unit(s) | | NEC 220.55 | Electric Ranges and Other Cooking Appliances Dwelling Unit(s) | | NEC 220.56 | Kitchen Equipment Other Than Dwelling Unit(s) | | NEC 220.60 | Non coincident Loads* | | NEC 220.61 | Feeder or Service Neutral Load | | Table 220.84 | Optional Calculations Demand Factors for Three or More Multifamily Dwelling Units | | **NEC Article 225** | **Outside Branch Circuits and Feeders** | | NEC 225.36 | Suitable for Service Equipment* |   | **NEC Article 230** | **Services** | | --- | --- | | NEC 230.23 | Overhead Service Conductor Size and Rating | | NEC 230.31 | Underground Service Conductor Size and Rating | | NEC 230.42 | Service: Minimum Size and Rating* | | NEC 230.79 | Rating of Service Disconnecting Means | | NEC 230.90 | Service Equipment Overcurrent Protection* | | NEC 230.95 | Ground-Fault Protection of Equipment* |   | **NEC Article 240** | **Overcurrent Protection** | | --- | --- | | NEC 240.4 | Protection of Conductors* | | NEC 240.6 | Standard Ampere Ratings | | NEC 240.13 | Ground Fault Protection of Equipment* | | NEC 240.15 | Ungrounded Conductors | | NEC 240.21 | Location in Circuit | | NEC 240.23 | Change in Size of Grounded Conductor* | | NEC 240.30 | Enclosures |   | **NEC Article 250** | **Grounding and Bonding** | | --- | --- | | NEC 250.30 | Grounding Separately Derived Alternating-Current Systems* | | NEC 250.30 (B)(1) | Grounding Electrode Conductor | | NEC 250.52 | Grounding Electrodes | | NEC 50.66 | Size of Alternating Current Grounding Electrode Conductor* | | Table 250.66 | Grounding Electrode Conductor for Alternating Current Systems* | | NEC 250.122 | Size of Equipment Grounding Conductors* | | NEC 250.122(B) | Increased in Size* | | NEC 250.122(C) | Multiple Circuits* | | NEC 250.122 (D) | Motor Circuits* | | NEC 250.122 (F) | Conductors in Parallel* | | NEC 250.122 (G) | Feeder Taps | | Table 250.122 | Minimum Size Equipment Grounding Conductors for Grounding Conductors for Grounding Raceway and Equipment* | ** ** | **NEC Article 285** | **Surge Protective Devices (SPDs), 1kV or Less** | | --- | --- | ** ** | **NEC Article 300** | **Wiring Methods** | | --- | --- | | NEC 300.1(C) | Metric Designators and Trade Sizes* | | **NEC Article 310** | **Conductors for General Wiring** | | --- | --- | | NEC 310.4 | Conductors in Parallel | | NEC 310.10 | Temperature Limitation of Conductors* | | NEC 310.15 | Ampacities for Conductors Rated 0-2000 Volts | | Table 310.15(B)(2)(a) | Adjustment Factors for More than Three Current Carrying Conductors in a Raceway* | | Table 310.15(B)(6) | Conductor Types and Sizes for 120/240-Volt, 3 Wire, Single Phase Dwelling Services and Feeders | | Table 310.16 | Allowable Ampacities of Insulated Conductors Rated 0 Through 2000 Volts, Correction Factors* | | NEC 310.60 | Conductors Rated 2001 - 35,000 Volts |   | **NEC Article 312** | **Cabinets, Cutout Boxes, and Meter Socket Enclosures** | | --- | --- | | NEC 312.2 | Damp or Wet Locations |   | **NEC Article 344** | **Rigid Metal Conduit: Type RMC** | | --- | --- | | NEC 344.22 | Number of Conductors | ** ** | **NEC Article 408** | **Switchboards and Panelboards** | | --- | --- | | NEC 408.3(C) | Used as Service Equipment* | | NEC 408.3(E) | Phase Arrangement | | NEC 408.3(F) | High Leg Identification | | NEC 408.4 | Circuit Directory or Circuit Identification | | NEC 408.30 | Panelboards | | NEC 408.36 | Overcurrent Protection* | | NEC 408.40 | Grounding of Panelboards* | | NEC 408.54 | Maximum Number of Overcurrent Devices* |   | **NEC Article 422** | **Appliances** | | --- | --- | | NEC 422.11 | Overcurrent Protection | | NEC 422.52 | Electric Drinking Fountains |   | **NEC Article 430 ** | **Motors, Motors Circuits, and Controllers** | | --- | --- | | NEC 430.21 | Motors Circuit Conductors: General | | NEC 430.22 | Single Motor* | | NEC 430.24 | Several Motors or a Motor(s) and Other Load(s)* | | NEC 430.25 | Multi motor and Combination Load Equipment* | | NEC 430.31 | Motors and Branch Circuit Overload Protection* | | NEC 430.42 | Motors on General Purpose Branch Circuits | | NEC 430.52 | Rating or Setting for Individual Motor Circuit | | Table 430.52 | Maximum Rating or Setting of Motor, Branch Circuit Short Circuit and Ground Fault Protective Devices | | NEC 430.53 | Several Motors or Loads on One Branch Circuit | | NEC 430.54 | Multi motor and Combination Load Equipment* | | NEC 430.62 | Rating or Setting Motor Load | | NEC 430.92 | Motor Control Centers | | NEC Table 430.248 | Full Load Currents in Amperes, Single Phase Alternating Current Motors | | Table 430.249 | Full Load Current, Two Phase Alternating Current Motors (4 Wire) | | Table 430.250 | Full Load Current, Three Phase Alternating Current Motors |   | **NEC Article 440** | **Air Conditioning and Refrigerating Equipment** | | --- | --- | | NEC 440.6 | Ampacity and Rating | | NEC 440.11 | Disconnecting Means | | NEC 440.12 | Rating and Interrupting Capacity | | NEC 440.22 | Branch Circuit Short Circuit and Ground Fault Protection | | NEC Article 695 | Fire Pumps* |   | **NEC Article 700** | **Emergency Systems** | | --- | --- |   [![Start A Free Trial ](https://no-cache.hubspot.com/cta/default/1002713/258a5fe2-de1c-4c3d-9db4-8a9850b9d67e.png)](https://cta-redirect.hubspot.com/cta/redirect/1002713/258a5fe2-de1c-4c3d-9db4-8a9850b9d67e)   488 N. 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