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There's no way you can memorize everything in the National Electrical Code. But if you understand why and what is intended, you will be better prepared to remember the details you need for every day use.
Mastering the NEC DVDs are designed to help electricians, designers, supervisors, contractors and maintainers understand the NEC.
Topics covered:
Understanding Electrical System Grounding
System Grounding vs. Equipment Grounding
Current Flow in a Grounding System
Definitions of Grounding Terms
Table 250.66 vs. Table 250.122
Grounding Electrodes
Ground Rods
Equal Potential Grounding
Sizing of Service Grounding Conductors
Which Electrical Systems Require Grounding
Grounding Services
Service Equipment & Raceway Bonding
Installation of Grounding Electrode Conductors
Separately Derived Systems
Grounding & Bonding for Distribution Transformers & Generators
Other versions of 2005 Mastering the NEC - Understanding Grounding Part 1: Systems and Services # 8 are also Available: