Series: National Electrical Code
Paperback: 792 pages
Publisher: NFPA (distributed by Delmar, Cengage Learning); 1 edition (September 22, 2004)
Language: English
ISBN-10: 0877656231
ISBN-13: 978-0877656234
Product Dimensions: 10.9 x 8.4 x 1.2 inches
Shipping Weight: 3 pounds
Average Customer Review: 4.6 out of 5 stars See all reviews (49 customer reviews)
Best Sellers Rank: #455,952 in Books (See Top 100 in Books) #38 in Books > Law > Business > Construction #89 in Books > Textbooks > Engineering > Electrical & Electronic Engineering #213 in Books > Engineering & Transportation > Engineering > Civil & Environmental > Fire Science
The National Electric Code, also knows as NFPA-70, is the standard that building officials use to define what is legal to use in electric services of all kinds. NFPA is the National Fire Protection Association. The Electric Code began almost as soon as Edison wired some of his new lights in New York, and the first electricity caused fire happened. Soon thereafter the National Fire Protection Association began writing safety codes aimed at preventing fires and promoting safe wiring techniques. Today, more than a century later, the Electric Code is republished every 3 years. As new inventions and new applications for electricity are ever expanding the code book expands and is revised to define the new applications. The 2005 edition has been updated to include recent developments in available materials and equipment. The code has 772 large pages detailing every electric installation from common house wiring to installation requirements for 35,000 volt transformers. The tables detailing how many conductors you can put in a conduit go on for 50 pages in the appendix.The problem most people have with the code comes from its complexity and scope. If you are a handyman, or even an electrician, it takes years of study to learn all its requirements, and even then they change it on you. It can be helpful though. One year I was installing wire for a welder in my garage. I found a paragraph that allowed me to derate the current load of the conductors based on the duty cycle percentage of the welder. I saved quite a bit of money on heavy wire that wasn't needed, and had a safe installation.
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