How much surge in voltage should be in the surge protector? (Min and Max range) Electrical Advice

How much surge in voltage should be in the surge protector? (Min and Max range) Discussion ThreadHow much surge in voltage should be in the surge protector? (Min and Max range) Electrical Advice

Hello,

I live in the Middle East. I have between 220V to 230V. I bought surge protectors for AC and other appliances such as PC and TV.

The upper limit voltage in surge protectors is 255V and the lower is 170V.

How does the manufacturer calculate the normal voltage? (for my surge protector is 170V ~ 255V)
Isn't 170V too low? It is almost 30 percent less than the input voltage.
Is 170V safe for appliances?

Thank you



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