What is a Lightning Arrester and Why You Need One Lightning arresters are devices that are used to protect the electrical equipment from damage due to lightning strikes. A lightning arrester is a device that is installed in homes and offices to protect the electrical equipment from damage due to lightning strikes. It is a device with two metal plates and a low-resistance wire in between them, which is designed to discharge any electricity going through it. The difference between an arrester and a resistor is that an arrester has two metal plates with some distance between them, which can discharge any electricity going through it. Whereas, resistors are designed for use on high-voltage power lines or cables and have metallic coils of wire inside them. Types of Lightning Arresters & How to Choose Best One for You Lightning arresters are designed to protect an electrical system from a direct lightning strike by dissipating the excess energy from the strike. They are usually installed at the end of a conductor that is most vulnerable to a strike, such as the top of a tower or antenna. There are two main types of lightning arresters: air terminals and ground terminals. Air terminals are used in systems with overhead wire conductors and ground terminals are used in systems with underground conductors. The difference between these two types is how they handle arcing distance. Air terminals have an arcing distance up to 1,000 feet while ground terminals have an arcing distance up to 500 feet. Lightning arresters also come in two different styles: non-self-cleaning and self-cleaning. Non-self-cleaning ones require periodic cleaning with acid or sand whereas self-cleaning ones automatically clean themselves by sending an electric arc through its internal parts when it has been What are the Benefits of a Kalre Lightning Arrrestor Kalre Lightning arrestors are used to protect electrical systems against the effects of lightning. The KALRE Lightning Arrester is a device that protects against the damaging effects of lightning. It is a safety device that is inserted into the power cable and is connected to earth. The Kalre Lightning Arrester has a high degree of reliability and can be used in most installations, including those with poor grounding.