The following are links to various resources provided by the Electrician’s Toolbox website ( ) and a few other websites.

Industrial Definitions

Basic Electrical Definitions Basic Lighting Definitions

Basic Motor Characteristics

Online Calculators



Introduction from the website:
Knowledge and the practical application of the National Electrical Code® is an essential part of all electrical installations. If it’s important for you to understand the National Electrical Code®, then look no further. The many NEC® resources available Free on this site include a Code Forum where you get your questions answered an E-Newsletter that keeps you informed on important industry issues lots of Free Stuff such as spreadsheets, as well as a great NEC® Quiz. In addition, the site contains lots of information about important Technical subjects, and Exam Preparation information including Free Online Testing for both the 1999 and 2002 NEC®.

National Fire Protection Association Website