Wiring Projects At Home

Electrical wiring keeps the power flowing through your home. It is run to power lighting, outlets, and devices throughout your home including appliances. Some wiring is low-voltage for things such as doorbells, while other wiring is much larger for large loads to power things such as ovens, ranges, welders, sub-panels, wells, and air conditioners.

  • 01 of 08

    Electrical Wire Color Coding

    A photo of electrical wire colors.
    Timothy Thiele

    Electrical wires have markings stamped or printed on the outside sheath of the cable. These markings tell what type and size of wire that you have. But looking deeper, the color of the wires inside of the sheath, like in type NM cable, will reveal that different color wires serve different purposes. The electrical wire color tells you a lot about the intended use of the wire. This coloring scheme is called wire color coding.

  • 02 of 08

    What Size Electrical Wire Do You Need?

    tangled electrical wires

    Peter Dazeley / Photographer's Choice RF / Getty Images

    To install any electrical wire installation, the proper wire size for the application is needed. But how do you know what size wire to use? The wire is sized by the American Wire Gauge (AWG) system. Your installation of conductors will depend on a few factors. the gauge of the wire, wire capacity, and what the wire will feed.

  • 03 of 08

    Common Types of Electrical Wiring Used in Homes

    Photo of Triplex Wire
    Tim Thiele

    Your home is wired with different types of wire. Each has its specific use to accommodate the load and conditions it is exposed to. Make sure you know what each type is and how it is used in the home’s electrical system.

  • 04 of 08

    Determining Proper Electrical Wire Size for Underground Circuit Cable Length

    Direct Burial Cable
    Timothy Thiele

    When considering the appropriate wire size for a circuit, don't forget to consider the circuit length. Electrical wire, no matter what material it is made out of, has a certain resistance to it. With an increase in cable length, the resistance causes a voltage drop in the circuit.

    Continue to 5 of 8 below.
  • 05 of 08

    Electrical Wiring Needed for a Bathroom

    Bathroom Photo

    Steven Miric / Getty Images

    Bathrooms are damp and have special needs when wiring them. Learn how to install appropriate electrical wiring to cover lighting, airflow, and safety devices in your bathroom. Everything from watertight lighting fixtures in bathing areas to effective ventilation to GFCI outlets for safety should be observed.

  • 06 of 08

    Electrical Wire Gauge, Ampacity, and Wattage Load

    Electrical Wire Pulling Caddies
    Timothy Thiele

    Learn some tips for determining the proper wire gauge, ampacity, and the maximum wattage allowed. Determining the proper size wire to use can be easy if you know what amperage and wattage a wire can carry per wire gauge. The trick is to have the right-sized wired fitted to the power demand it will have on the circuit.

  • 07 of 08

    Electrical Wire Insulation and Its Labeling

    An image of electrical wire lettering.
    Timothy Thiele

    Electrical wiring to be run in conduit comes in individual strands, encased in insulation to protect the wire and insulate it from other wires and the conduit. Wires come in either solid or stranded, depending on the wire size. Bare conductors are available for ground wires only. The insulation is made to take on some rather extreme conditions. Heat-, oil-, gasoline-, and water-resistant coatings are all available to help your electrical wire survive.

  • 08 of 08

    Wiring Typical Laundry Circuits

    Whirlpool Duet Front-load Washers
    Timothy Thiele

    It is commonplace for homes today to have one or more of three different laundry circuits. Each has a unique assignment for supplying power to the laundry appliances. One is a 20-amp circuit designated to run the 120-volt power for the washing machine and the control power for the dryer. This circuit can also supply general-use devices.