Circuit breakers are intended for switching and protection of your home's wiring from high temperatures caused by excess current higher than the rating of the wire. While thermal-magnetic circuit breakers are the key element for overload and short-circuit protection of your electrical system, there are potentially dangerous conditions that do not involve overcurrent. The following circuit breakers should be utilized to provide further protection.
Murray Combination AFCIs protect against all three possible types of arc fault, line-to-ground, line-to-neutral arcs, and series arcs and thus significantly reduce the risk of electrical fires. They feature unique LED trip indicators, providing a valuable analysis tool to help electricians pinpoint the type of trip and reduce the time spent debugging the wiring.
Murray Branch/Feeder AFCIs protect against high-energy parallel arcing which consists of line-to-ground and line-to-neutral arcs. They feature a trip indicator window to indicate that the AFCI tripped due to an arc fault condition. Arc faults may occur for many reasons such as worn electrical insulation or damaged wire, misapplied or damaged appliance cords and equipment, loose electrical connections, or driving a nail into a wall and having it inadvertently hit a wire. The possibility of arcing grows as a home ages, since age and time will contribute to the possibility of these conditions occurring.
GFCIs are an effective means of preventing severe electrical shock. GFCIs are installed to protect areas of the home, such as the kitchen, bathroom or laundry, where electrical appliances or products may come into contact with water. They are designed to protect against severe electrical shock or electrocution from ground faults. Ground faults occur when the electrical current in an appliance strays outside its normal path, and the human body becomes part of the path through which the electrical current may flow.
Limit surge voltage by conducting large surge currents safely to ground. While the voltage of these surges may be high enough to damage your equipment, the associated current is very low. An since circuit breakers protect against overcurrent not overvoltage, surge protection is needed. The first line of defense is protection at the point of entry where electricity enters a home through the main electrical service panel. Surges and voltage spikes from lightning or utility switching enter the electrical system exposing your equipment to potential damage.
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