Electrical resistance is a term that describes how much a material opposes the flow of electrical current through it. This measurement is taken in ohms. For a point of reference, the electrical resistance of wood is around 1,000, dependent upon how moist the wood is; while the electrical resistance of aluminum is just 2.82 ohmn.
Obviously the measurement of a material’s electrical resistance must be conducted in a safe, accurate, and consistent manner – hence the production of resistivity meters. As the name implies, these types of meters, including a resistivity meter at AIG, is a meter whose sole job is to let you know the amount of resistance there is from the ground (soil). Measurements can vary depending upon the composition of a particular area’s soil, ground density, nearby water sources, and even the type and quality of the wires used to carry the electricity.
A resistivity meter can often be inserted directly into an electrical outlet, much like a standard plug, and thus is a great tool for electricians, engineers, and even the average DIY home repair guy to have on hand. It’s a useful tool for wiring projects, and can assist in helping professionals stay safe when working directly with electric-transferring components. Other resistivity-measuring meters may be able to connect directly to electrical lines, which is handy if you do not have an electrical outlet nearby, or connected, to use with a plug-in style meter.
Besides measuring the amount of electrical resistance and even the water content present in the ground, some resistivity meters can also measure the salt content. This is an essential measurement because salts in the soil can lead to line corrosion, which can lead to decreased line quality and even safety issues.
The use of a resistivity meter is a must for any wiring projects, whether they’re indoors and out. And because these meters measure more than just electrical current and how it’s passing through other materials, it’s a handy device to have on hand for projects involving soil conditions, water content, and salt content. Resistivity meters are available for purchase at virtually any hardware or home improvement store.