Wires in a hole awaiting the installation of an electrical box

Installation of an Additional Wall Dimmer and New Ceiling Light Fixture

Dear Mr. Electrician: Is it possible to install an additional dimmer next to an existing...
A very old style of GFCI receptacle.

Testing and Replacing a GFCI Electrical Receptacle

Dear Mr. Electrician: I push the "Test" button on my bathroom GFCI (Ground fault circuit...
Bad Grounding for Telephone, TV, and Power

Grounding and Bonding For TV and Telephone

Dear Mr. Electrician: My neighbor was blown out of her chair when lightning hit her...
A Water Pipe Ground Clamp Attached Where the Pipe Enters the Basement

Grounding Electrode System

Dear Mr. Electrician: I recently hired an electrician to fix something in my very old...
The Backside of a Residential Telephone Jack

Telephone Wiring Color Code

Tip + Ring - Cat 3 Green Red Cat 3 Black Yellow Pair 1 White with blue stripe Blue Pair...

Wiremold for a Garage Door Opener Electrical Receptacle

Dear Mr. Electrician:  I need to install an electrical receptacle outlet on the ceiling of my garage for an electric garage door opener.  I do...

Electrical Conduit Dimensions

Electrical Pipe and Conduit Dimensions From 1/2" to 6" Trade Size USA Trade Size Metric  1/2"  16  3/4"  21  1"  27  1 1/4"  35  1 1/2"  41  2"  53  2 1/2"  63  3"  78  3 1/2"  91  4"  103  5"  129  6"  155 The information below was derived from several sources and should not be considered precise.  Actual dimensions can...

Generator Interlock Kit for a Cutler Hammer Loadcenter

  Dear Mr. Electrician: How do I install a generator inlet box to supply portable generator power to my Cutler Hammer main circuit breaker panel so that I...