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Topic: What are Surge Protection Devices?

Surge protection devices are the types of devices that are used to make your home appliances protected and safe while there is voltage leakage generally known as transient overvoltage. This may happen when there is incorrectly installed electrical wiring, poor electricity flow due to poor cable joints and may also be due to the fluctuations in the electricity supply plus many other reasons that can create a surge.

Benefits of Installing Surge Protection Devices:

With the advancement of technology and to make humans and their properties safer these devices are playing the most important role because they can make the most valuable assets of your home like television, refrigerators, washing machines, computers and several other useable appliances whenever there is an instant surge or in other words the current leakage. An important point to remember here is that it is mandatory to install the surge protection device within the limits of the consumer unit because it can not ensure the safety of the electronic devices outside their sphere and usually it’s advisable to install the protection devices for the different kind of insulations like electronic traffic coming from cable or telephone networks.

Principle of working:

The main principle of working of a surge protection device is explained by the National Electrical Code as “A protective device for limiting surge voltages by discharging or bypassing surge current, and it also prevents the flow of current while remaining capable of repeating these functions”.

Types of Surge Protection Devices:

The main task of any surge protection device is to make it safer and protected the electronic devices when there is an overflow of current in two ways one is by blocking the voltage or by making it short so these both ways the voltage is somehow reduced and aĺl the appliances are marked safe.

Type 1:

These devices are usually installed on the main circuit board and hence it makes the electrical system safe from direct lighting sparks.

Type 2:

These devices are generally installed at the second distribution board called the sub-distribution board and hence make the system from the overflow of the current during the surge.

Type 3:

These devices are installed at a location near the protected load or installed closer to or after the main circuit breaker in the electrical wiring.

When to know if I should install SPD at home?

It is very important to know that you must install the surge protection device at home because it can make your home safer and can ensure safety from human and property loss if not completely but to some great extent. According to the IET wiring Regulations BS 7671:2018 explains that after a complete risk analysis there must be over-voltage protection when there is a risk of human life, property or industrial loss or any public damage.


To conclude we can say that the Surge Protection Devices are one of most essentials of the home to make your living, property and any other public asset safe and protective. Without getting any further delay contact EcoGreen Electrical today to make your home feel more protected.

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