Articles about National Electrical Code

How to Wire a Junction Box: Selecting a Junction Box for Electrical Wiring, The Basics of Electrical Junction Boxes, The number of wires that are allowed in a Junction Box.

How to Know if Your Electrical Wires and Cables are Correct: Identifying Wire for Electrical Circuits: Homes are wired according to national electrical codes which have various electrical circuit requirements depending on the circuit application and area of the home.

How should I Identify Electrical Conductor Wiring? NEC Article 200.7 (C) Re-Identifying Ungrounded Neutral Conductors.

What is the NEC Code for Kitchen Counter Top Outlets? The Electrical Code Requirements for Kitchen Counter top Receptacle Circuits.

How to Splice Electrical Wires and the Ground: For projects where you are extending the wiring of an existing circuit then the additional wire size must match that of the circuit you are branching from or splicing. Electrical junction box splices can be made safely when you understand the method.

This site gives a lot more straight forward information than the code book does, it also seems to give recommendations that go above and beyond the NEC book.

How to Know What Wire Size and Type to use for Home Electrical Wiring – Continuing the circuit with the same wire size and type is essential to maintain the integrity of the circuit.

Electrical Maintenance Training for Arc Flash: The NFPA 70E is the standard that addresses electrical safety requirements for employees. It includes arc flash training, study, clothing, etc. which would be very beneficial for your training program for your electrical maintenance department.

Where does it specifically state the change from 3wire to 4wire service?