The National Electrical Code

NEC

Edestol™ is built with the 2024 NEC® (NFPA 70) Edition as a foundation, integrating the following key chapters and articles.

Supported NEC® Chapters and Articles:
• Art. 100: Definitions.
• Art. 110: System Requirements.
• Art. 210: Branch Circuit Sizing.
• Art. 215: Feeder Sizing.
• Art. 220: Load Calculations.
• Art. 225: Outside Load Calculations.
• Art. 230: Service Calculations.
• Art. 240: Overcurrent Protection.
• Art. 250: Ground Conductor Sizing.
• Art. 310: Low Voltage Conductor Sizing.
• Art. 311: Medium Voltage Conductor Sizing.
• Art. 392: Cable Tray Sizing.
• Art. 424: Heater Circuit Sizing.
• Art. 430: Motor Circuit Sizing.
• Art. 450: Transformer Protection.
• Chap. 9: Conduit Fill Calculations.
• Annex B: Conductor Sizing.

Notes on Information Distribution:
1. A primary purpose of the Edestol™ program is electrical equipment, wire, cable, and raceway sizing.
2. NFPA 70, the National Electrical Code©, contains an extensive series of tables and rules which direct electrical sizing decisions and calculations.
3. The Edestol program has organized these tables and rules into a background database called SysData.
4. This background database (Sysdata) is accessed by the program to inform sizing decisions and calculations based on user input.
5. This background database (SysData) is not visible or accessible to the user in any way.
6. Although the program, in some cases, identifies a code reference location for the decision or calculation, the full text of the code is not provided to the user.
7. The Edestol™ program has been developed as a complimentary tool for sizing assistance to the code user.

Learning Corner:
To learn more about the National Electrical Code, please visit here.
To purchase a copy of the 2024 NEC® (NFPA 70) Edition, click here.
To purchase a copy of the 2023 NEC® (NFPA 70) Handbook, click here.
Where is the National Electrical Code in effect? According to the NEC, it varies by state. Learn more here.
Career Advancement Starts with NFPA Certification!

NEC (NFPA 70) Courses and Training Opportunities:
• National Electrical Code Changes Online Training Series (1.6 CEU)
• NFPA 70, (NEC) Bonding Online Training (2023) (0.1 CEU)
• NFPA 70, (NEC) Conductors and Overcurrent Protection Online Training (2023) (0.1 CEU)
• NFPA 70, (NEC) General Equipment Installation Practices Online Training (2023) (0.1 CEU)
• NFPA 70, (NEC) Grounding Online Training (2023) (0.2 CEU)
• NFPA 70, (NEC) Motors and HVAC Equipment Online Training (2023) (0.2 CEU)
• NFPA 70, (NEC) Transformer Protection Online Training (2023) (0.2 CEU)
• NFPA 70, (NEC) Wiring Methods and Raceway Fill Online Training (2023) (0.1 CEU)
• NEC Navigator Online Training (0.15 CEU)
• Photovoltaic and Energy Storage Systems Series Online Training (0.4 CEU)

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