Good Heavens

Plus Magazine - Singh's "Code Book" Challenge Cracked
"The £10,000 prize Singh offered for the winner of this "cipher challenge" has now been won by a team of five Swedish researchers." Article explains the challenge, how it was constructed, and what it took to solve it.
pass.maths.org.uk/

Code Book Cipher Challenge Solution Page
Gives solution to Singh's Cipher Challenge. Includes the list of authors, the order of solutions, and the steps to create a team. In HTML, PDF and postscript format.
codebook.org/

1999 National Electrical Code
A source for print and electronic versions of the 1999 NEC and NEC Handbook. Requires purchase.
www.maintenanceresources.com/

NEC Electrical Code License Exam Renewal Update
NEC Electrical Code License Exam Renewal Update
web442.com/

National Electrical Code Update Course
An online course that allows an electrician, to study changes to the NEC from the comfort of your home or office. Accepted by various states. From the University of Eastern Maine Community college.
www.emcc.edu/

Contractor Cafe
National Electrical Code training for electrical contractors.
www.contractorcafe.com/

The Cipher Challenge
History of a code cracking competition. Challenge details, how it was solved, winners, essays and photo gallery.
www.simonsingh.net/

Cabling FAQ.
Guide to handling and installing many types of electrical cables.
www.faqs.org/

Clearances and working space
A magazine article dealing with the NEC's requirements on clearances and work spaces for protection of persons.
industryclick.com/

Mike Holt Enterprises
National Electrical Code explanations, training and tips.
www.mikeholt.com/