Electrical Wiring, Circuitry, and Safety

Wires and circuits are the base of your electrical system. Learn about different types of wiring, cords, switches, and outlets and more circuitry basics.
Electric Outlet
How to Fix Loose Outlets
Person plugging a cord into a wall plug
9 Types of Wall Plugs Found in Your Home
Stripped electrical wire
How to Strip a Wire
Overloaded power strip
What Happens When an Electrical Circuit Overloads
Electrical outlet recepticle
How to Make Side-Terminal Connections on an Outlet Receptacle
Circuit breaker
The Uses and Limitations of Tandem Circuit Breakers
GFCI outlet cover plate reinstalled and tested with reset button by screwdriver
How to Provide GFCI Protection to an Outlet
Electrical wire being run through wood beam in wall for nearby electrical box
How to Run Electrical Wire Through Walls
3 and 4 prong dyer cords
3-Slot vs. 4-Slot Dryer Outlets: What's the Difference?
GFCI outlet testes with a green voltage tester by hand closeup
How to Test GFCI Outlets
Young girl using light switch
Proper Heights for Electrical Wall Switches
3 and 4 prong dryer cords on top of a dryer
How to Convert a 4-Prong Dryer Cord to Fit a 3-Slot Outlet
Electrical wires
All About Electrical Wiring Types, Sizes & Installation
Electircal conduit
Maximum Number of Electrical Wires Allowed in Conduit
Wires in electric box
How to Terminate Electrical Wire With Wire Caps
Electrical circuit breaker panel with door open and yellow and orange wires connected behind
Calculating Electrical Load Capacity for a Home
Middle-of-Run electrical outlet being screwed into wall
Adding an Electrical Outlet in the Middle of a Run
Electrical coil pulled through conduit tube
How to Pull Electrical Wire or Cable Through Conduit
Electrical wires running through a finished wall's wooden plank hole
How to Run Electrical Wires in a Finished Wall
Yellow circuit tester inserted into standard 120-volt outlet receptacle
How to Replace a Standard 120-Volt Outlet Receptacle
three way switch
What Is a 3-Way Switch?
unattached wires
Amperage and Wire Gauge Chart: What Size You Need
single pole, double pole, three way, four way light switches
8 Types of Electrical Wall Switches and How to Choose
ide by side comparison of a GFCI receptacle and circuit breaker
GFCI Receptacle vs. GFCI Circuit Breaker
Short circuit electrical outlet with burn marks pulled from box
What Is a Short Circuit, and What Causes One?
remodeled kitchen and appliances
Electrical Circuit Requirements for Kitchens
person switching a main breaker
What Is a Main Circuit Breaker and How Does It Work?
Electrician Working on Electrical Service Panel
Understanding Electrical Grounding and How It Works
luxury bathroom Interior
National Electrical Code Requirements for Bathrooms
Upside-down outlet being replaced with screwdriver
How to Fix an Upside-Down Outlet
Electrical outlet being rewired with screwdreiver
How to Wire Electrical Outlets and Switches
Open Electrical Box
How to Splice Electrical Circuit Wires
Various electrical wires
6 Different Types of Electrical Wire and How to Choose One
Circuit breaker being removed by hand
How to Remove a Circuit Breaker Safely
Single-pole light switch being replaced from wall outlet box
How to Replace a Single-Pole Light Switch
Installed subpanel with front cover removed
Reasons To Install A Subpanel In Your Home
Modern fitted kitchen
How to Wire a 120/240-Volt Outlet for an Electric Range
Telephone jack's exposed wires held by hand
How To Install a Phone Jack
overloaded power strip
How Do Circuit Breakers Work? Common Reasons for Tripped Circuits
2 prong outlet with GFCI wiring touched by hand
Upgrading a 2 Prong Outlet With a New GFCI
orienting the new switch
How To Change a Light Switch From Toggle to Rocker
Service panel door open with 240-volt circuit breaker switched on
Installing a 240-Volt Circuit Breaker
Electrical wire for underground circuit cable on wooden surface closeup
Sizing Electrical Wire for Underground Circuit Cable
Newly installed light switch being tested by hand
How to Remove and Test a Light Switch
Electrical wire colors
Electrical Wiring Color Coding System
View Of Fairy Lights On Ground Indoors
Series vs Parallel Circuits: What's the Difference?
Outlet receptacle being installed inside blue box
How to Install an Electrical Outlet Receptacle
Electrical outlet
Electrical Code Requirements for Outlets in the Home
Electrical Fuses Circuit Board
Ground Fault vs Short Circuit: What's the Difference?
Single pole switch turned on by hand
How to Replace a Single-Pole Wall Switch
outdoor outlet
National Electrical Code (NEC) Rules for Outdoor Wiring
Finger pointing to tripped circuit breaker in service panel
How to Reset a Tripped Breaker
Pigtail electrical wiring being connected behind light switch
How to Make Pigtail Electrical Wire Connections
Circuit breakers connected with hot wire and terminal with screwdriver
How to Wire an Electrical Circuit Breaker Panel
Circuit breaker in service panel being replaced
How to Replace a Circuit Breaker
wire nuts
Choosing the Right Wire Nuts for Electrical Connections
Yellow circuit breaker finder inserted into wall outlet
How to Use a Circuit Breaker Finder
Modern kitchen with canopy
How to Change the Ballast on a Fluorescent Light Fixture
multimeter and electrical plan
How to Test for a Complete Circuit in a Light Bulb Holder
Electrical Switch Testing
Receptacle Boxes and Cable Installation Codes
BX Electrical Wiring
BX Cable and Wire: What to Know Before You Buy
A Jenga tower
Balancing Electrical Loads
An electrical disconnect being pulled by a hand
Wiring Basics for Electrical Disconnect Switches
non metallic sheathing cable
Understanding NM (Non-Metallic) Sheathed Cable