Why whole house surge protectors are not enough


TL;DR:

One measure of a surge protector is the clamping voltage. That is, at what voltage does the surge protector actually start to work. Whole house surge protectors are limited to no less than ~ 600 Volts (instantaneous) between a leg and neutral or ground. That’s up to 1,200V if symmetrical.

The best surge protecting strips and conditioners clamp below 200 Volts.

Please keep this in mind when deciding whether or not to use surge protectors at your PC, stereo, TV, etc. in addition to a whole house unit.

I wrote more about this here:

 

https://inatinear.blogspot.com/2021/09/time-for-new-surge-suppression.html

No manufacturer of whole house surge protection claims that their devices alone are enough for sensitive electronics when you check the fine print.

erik_squires

Showing 3 responses by carlsbad2

Erik,

Given that I don't have to deal with lightning where I live, and power is actually underground so cars don't hit poles either.

But I would rather take my chances and buy new gear if damaged than compromise sound quality.

Jerry

Anyone care to explain how a vaccum clear, or anythig inside a home, can cause a surge?  Surges always come from outside the home.

Jerry

@erik_squires Thanks for your thoughtful and detailed response.  If I lived where there was lightning, I'd be full in on the best surge protection available for everything excep my audio system....I'd probably just unplug my Regenerator before each storm....I know, PITA but as you know, I don't even like the degradation caused by fuses. 

I'd probably come up with some inexpensive equipment to use when lightning is in the area.  

Difficult problem you have and I feel for you.

thanks,

Jerry