Home Wiring Size

By | June 2, 2021



A Guide to Understanding Home Wiring Size



Understanding the wiring size that’s used in your home is important both for safety and efficiency reasons. After all, it’s what keeps your lights working and your appliances running. Keeping up with the latest in home wiring technology can help keep your home up-to-date and more energy efficient. In this article, we’ll take a look at the different types of wiring sizes and how to decide which one is right for your home.

When you’re dealing with home wiring size, the gauge of the wire is probably the most important factor. Although most building codes dictate the minimum size of wire allowed in any particular application, it’s still helpful to understand the different gauges of wires and why they’re suitable for certain applications. This guide will help you understand the standard types of home wiring sizes and why they’re used.

What is Home Wiring Size?



Home wiring size is a measurement of the thickness of the copper or aluminum wire being used to supply electrical power. The type of wire used is measured in American Wire Gauge (AWG) sizes, and each diameter of the wire is rated for a number of amps. When selecting the size of wiring for your home, it's important to select the correct size of wire for the amps required. Selecting the wrong size can cause an overload that can cause a fire, or it can lead to insufficient power and inadequate performance.

Common AWG Wire Sizes Used In Homes



The most common wire sizes used in homes are from 10 to 14 AWG. A 10 AWG wire is able to provide 20 amps of power, while a 14 AWG wire is only capable of providing 15 amps. The table below provides a brief summary of the common AWG wire sizes used in homes and their amp capacity.






















Size AWG Amp Capacity
10 10 20
12 12 15
14 14 15


The larger the AWG number, the smaller the wire size. As such, a 14 AWG wire is smaller than a 10 AWG wire. The ampacity of the wire will tell you how much electricity the wire can handle safely without overheating or creating a fire hazard.

Factors to Consider When Choosing Home Wiring Size



When selecting the appropriate home wiring size, there are several factors to consider. These may include:


  • The length of the run: The longer the wire run, the thicker the wire should be to handle the amperage load.

  • The number of outlets and lights on the circuit: The more outlets and lights, the thicker the wire should be so that it can handle the load.

  • The type and size of the appliance: Larger appliances require thicker wire to handle the increased load.

  • The voltage of the appliance: Higher voltage appliances require thicker wire to handle the load.



Conclusion



When selecting the appropriate home wiring size for your home, it’s important to take into consideration the factors listed above. Understanding the different AWG wire sizes and their amp capacities will help you make sure that you select the correct size of wiring for your home. By following the guidelines and standards outlined here, you can ensure that your home is as safe and efficient as possible.


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