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Thread: installing new UPS for my office and needs electrical work...

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  1. #18
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    Aug 2009
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    Quote Originally Posted by little_scrapper View Post
    Would plugging a surge power strip into a UPS or even a UPS into a power strip be bad?
    Why waste money on a device that does not claim to do effective protection?

    Output from this 120 volt UPS in battery backup mode is 200 volt square waves with a spike of up to 270 volts between those square waves. Power so 'dirty' as to potentially harm power strip protectors and small electric motors. And ideal power for all electronics. Because electronics have long been required to be so robust.

    What are you trying to accomplish? All electronics contain superior surge protection - as the 'dirty' UPS electricity demonstrates. Anything that might work on an appliance's power cord is already inside. Protection so robust as to make that 'dirtiest' UPS power into ideal clean electricity.

    Your concern is a transient so major as to overwhelm existing protection. Only an earthed protector - where power enters the building - can divert such energy harmlessly into earth.

    The power strip is not effective - which is obvious by reading its numeric specs. The best power strip is a $4 strip with zero protector parts inside. And has the 'always necessary for human safety' 15 amp circuit breaker.

    Maybe view another problem sometimes created by power strip protectors:
    http://www.hanford.gov/rl/?page=556&parent=554
    http://www.ddxg.net/old/surge_protectors.htm
    http://www.zerosurge.com/HTML/movs.html
    http://tinyurl.com/3x73ol entitled "Surge Protector Fires"
    http://www3.cw56.com/news/articles/local/BO63312/
    http://www.nmsu.edu/~safety/news/les...tectorfire.htm
    http://www.pennsburgfireco.com/fullstory.php?58339

    Why do informed homeowners earth only one 'whole house' protector? Because even power strip protectors need to be protected. Why buy a power strip that does not even claim effective protection?
    Last edited by westom; 07-27-2010 at 10:41 AM.

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