NFPA 70 National Electrical Code Handbook Hardcover 2017

Description

The NFPA 70  National Electrical Code 2017 Edition is a critical standard that the National Fire Protection Association (NFPA) publishes. It guides professionals in safely installing electrical wiring and equipment in various settings, ensuring protection against hazards like fire and shock. Both the United States and many other countries widely adopt it for safety compliance.

Key Highlights of the 2017 NEC

1. Expanded GFCI Protection:
   The 2017 NEC broadens Ground Fault Circuit Interrupter (GFCI) protection to include areas such as laundry rooms and additional outdoor spaces, increasing safety.
2. ARC-Fault Circuit Interrupters (AFCIs):
   The code enhances AFCI protection to reduce the risk of electrical fires caused by arcing faults, especially in residential settings.
3. Service and Feeder Loads:
   Revisions in the calculation of service and feeder loads reflect modern appliance and equipment usage, making systems more efficient.
4. Energy Management:
   New provisions encourage energy-efficient practices and facilitate the integration of renewable energy systems, supporting sustainability goals.
5. Industrial Locations:
   Updated rules improve safety for electrical installations in hazardous and industrial environments, addressing specific challenges in these areas.
6. Solar and Energy Storage Systems:
   The 2017 NEC adds enhanced provisions for photovoltaic and energy storage systems, accommodating the rapid growth of renewable technologies.
7. Wiring Methods:
   New and updated guidelines for wiring methods, grounding, and bonding increase system reliability and safety.

Structure of the National Electrical Code (NEC) 2017 Edition

The NEC divides its content into nine chapters, each focusing on specific aspects of electrical systems.

1. General Requirements: Defines scope, purpose, and key terms.
2. Wiring and Protection: Establishes rules for branch circuits, feeders, and service conductors.
3. Wiring Methods and Materials: Specifies standards for wiring, raceways, and enclosures.
4. Equipment for General Use: Outlines requirements for electrical devices and equipment.
5. Special Occupancies: Provides guidelines for hazardous and specific-use locations.
6. Special Equipment: Sets standards for unique systems like medical and industrial equipment.
7. Special Conditions: Focuses on emergencies, backup power, and overcurrent protection.
8. Communications Systems: Details installation and use of communication cables and infrastructure.
9. Tables: Offers reference data for calculations and specifications.

Importance

Following the NEC helps professionals comply with legal requirements while promoting safety in electrical installations. The code undergoes a revision every three years, incorporating technological advancements and addressing new safety concerns.