If you have problems seeing the clips, download the latest version of Windows Media Player by clicking here.
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:
Ampacity Tables
Insulation Ratings
Number of Conductors
Wiring Insulation Dictionary
Ampacity Table Values & Footnotes
Ambient Temp
Corrections
Derating Factors & Examples
Derating vs. Conduit Fill
Maintaining Spaces Between Conduits
Derating & Neutrals
Ampacity vs. Overcurrent Protection
Overcurrent Protection for Recepticle vs. Lighting Circuits
60°, 70°, 90°C Insulation Application Limitations
Other versions of 2005 Mastering the NEC - Ampacities & Derating # 6 are also Available:
2005 Mastering the NEC - Ampacities & Derating DVD # 6
