All surge protectors have a cited reply time, this implies the period of time in which the surge protector does not stabilize the voltage levels, clearly, the higher the reply time then the bigger the danger to the appliance in question. Also be on the lookout for the value in joules, this is a reflection of the quantity of voltage that may be safely absorbed by the protector, before it fails, manifestly the higher the number then the larger the degree of protection that’s on offer.
So how does a surge protector actually work then?

Well, whenever you use an electrical appliance that needs power from the power supply ( i.e. You want to plug it in ) you will plug in the power wire for that appliance, and the power provided form the sockets will be conducted through the wire, therefore powering the appliance. Now, a surge protector is extraordinarily close in design and function to a standard electrical appliance, as it even has a main power line which has an extra connection that’s attached to the ground wire. The point of the ground wire is to conduct any and all excess ( and so potentially damaging ) electric currents to the ground. ( therefore the name of the cable )

In order to maintain the actual working functionality of the electrical appliance in query the surge protector will only ever channel away excess voltage, the reason for this is simple. If the surge protector worked TOO effectively, and siphoned away too much of the electric current then the appliance would not be ready to work.

In order to better determine when it should kick in, the surge protector will employ a voltage dependant resistor. This is actually a conductor of electricity which will be made from a material sometimes proof against electricity so that when a certain threshold is reached ( or breached as the case maybe ) the conductor successfully conducts the electricity without delay through the ground wire, suggesting that the electricity is conducted and dispersed through the ground.

Please be aware, surge protectors do not offer blanket, comprehensive protection, they are not much use in severe power fluctuations such as lightning typhoons. However [*COMMA] they are superb for the protection of private computer systems where even the most minor of fluctuations can cause major damage to the fragile parts of the PC.