- Mar 21, 2004
- 13,576
- 6
- 76
The IT in my local college told my friend that surge protectors are not all that safe. He claimed that after the first time they "only work once" they become mere power strips, unable to protect against further surges.
I have looked online and I cannot see any basis to such a claim, however, this little bit in wikipedia bout surge protectors:
anyone knows more about this and can clarify things for me?
I have looked online and I cannot see any basis to such a claim, however, this little bit in wikipedia bout surge protectors:
has me wondering whether the MOVs might degrade with use, eventually failing to clamp.Clamping voltage better known as the let-through voltage. This specifies what voltage will cause the metal oxide varistors (MOVs) inside a protector to conduct electricity to the ground line.[1] A lower clamping voltage indicates better protection, but a shorter life expectancy. The lowest three levels of protection defined in the UL rating are 330 V, 400 V and 500 V. The standard let-through voltage for 120 V AC devices is 330 volts.[2]
anyone knows more about this and can clarify things for me?