Articles about National Electrical Code

Can wire locators accurately show where electrical wires are inside a wall? Methods of Home Electrical Circuit Wiring, Electric Wiring Inside Walls, How To Locate Electric Wires, Home Wiring Techniques.

Should a white neutral wire have voltage when the circuit breaker is off? A multiwire circuit has been improperly installed, which is causing electrical problems within the home.

The Purpose of the Neutral Wire in Electrical Systems: What is the purpose of the neutral wire and the difference between the ground wire and the white neutral wire.

How to Plan and Install Electrical Wiring for Garage Outlets and Lighting Circuits: Electrical Codes about GFCI protection for 15A and 20A, 125V receptacles in garages.

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.

Do I need to run a ground wire for a 200 amp sub panel that is 200 feet away from the main panel? Grounding a Remote Sub Panel at a Detached Building.

Does a GFCI Outlet need to be grounded?

How to Install an Earth Grounding and Bond for Communication Antenna: Guide for Grounding an Antenna System

Ceiling Light Fixture Electrical Wiring and Connections: Depending on the age of the home there may be one or more cables found in the ceiling junction box. These cables are used for distributing power to the light fixture, the wall switch, and may provide power to wall receptacle outlets as well.

How to Remove Insulation from Electrical Wires: Stripping Electrical Wires Without Nicking the Wire, Methods of Stripping Electrical Wires and Making a Connection.

How many receptacles and lights does the code allow per 15 amp circuit? Code Requirements for Wiring Outlets and Lights

Electrical Question: I need a 50amp, 30amp, and 20amp circuit in my garage. Do I need more than one conduit for the electrical wires?

Installing a Panel and Ground System for a Shop: Factors that Determine the Type of Bonded Grounding System, Detailed Questions and Answers about Installing a Shop Panel and Bonded Ground System.

New commercial 200amp 1 phase breaker panel. With line power entering from the bottom.

GFCI Ground Fault Protection for Swimming Pool Lights: NEC Article 680-20, As described in this electrical question, anyone who enters the pool with this light on is in Danger of Potential Electrical Shock!

How high should a 220volt receptacle box be above the floor? Examples where 220volt receptacles are installed in specific applications and the NEC Code.