Go Back   AnandTech Forums > Hardware and Technology > General Hardware

· Hardware and Technology
· CPUs and Overclocking
· Motherboards
· Video Cards and Graphics
· Memory and Storage
· Power Supplies
· Cases & Cooling
· SFF, Notebooks, Pre-Built/Barebones PCs
· Networking
· Peripherals
· General Hardware
· Highly Technical
· Computer Help
· Home Theater PCs
· Consumer Electronics
· Digital and Video Cameras
· Mobile Devices & Gadgets
· Audio/Video & Home Theater
· Software
· Software for Windows
· All Things Apple
· *nix Software
· Operating Systems
· Programming
· PC Gaming
· Console Gaming
· Distributed Computing
· Security
· Social
· Off Topic
· Politics and News
· Discussion Club
· Love and Relationships
· The Garage
· Health and Fitness
· Merchandise and Shopping
· For Sale/Trade
· Hot Deals
· Free Stuff
· Contests and Sweepstakes
· Black Friday 2013
· Forum Issues
· Technical Forum Issues
· Personal Forum Issues
· Suggestion Box
· Moderator Resources
· Moderator Discussions

Thread Tools
Old 06-09-2008, 03:14 AM   #1
Platinum Member
Join Date: Oct 1999
Posts: 2,432
Default Plugging a surge protector into a UPS battery backup

The manuals that come with my UPS battery backups say not to plug a surge protector into the UPS. Does anyone know the technical reason for why they say not to do this?

I currently have a few low power devices plugged into a surge protector strip, which is then plugged into a UPS battery backup. And it seems to work fine on battery mode. I'm basically using the surge protector strip as an extension cord with additional outlets, and like the ability to switch off those devices separately from the other devices plugged directly into the UPS.

Moved to appropriate forum - Moderator Rubycon
jrichrds is offline   Reply With Quote
Old 06-09-2008, 03:31 AM   #2
Blain's Avatar
Join Date: Oct 1999
Location: SW Indiana
Posts: 22,885
Default Plugging a surge protector into a UPS battery backup

A Tripp-Lite tech explained it to me many months ago. If I remember correctly...
The surge strip can send some kind of signal back down the line and kill the UPS.
Too many delicate hothouse flowers
Blain is offline   Reply With Quote
Old 06-10-2008, 07:57 AM   #3
Diamond Member
pcgeek11's Avatar
Join Date: Jun 2005
Posts: 5,338
Default Plugging a surge protector into a UPS battery backup

A UPS provides the surge protection on the input side of the circuit so plugging a UPS into a surge protector is the same as daisy chaining surge protectors. Due to the potential for harmonics and feed back into each others surge protection circuits one or both could blow up causing a fireworks show and or a fire.

The output of a UPS is usually a square wave and not a sine wave. Surge protector circuits are designed for a sine wave input. Unless the surge protector is designed for a square wave and even then I would take it with a grain of salt.

best bet = don't ever do it.


How to annoy a liberal: Work Hard and be Happy. In the words of John Smith who saved the Jamestown settlement: Those that don't work; will not eat. We need to learn from history.
pcgeek11 is offline   Reply With Quote

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 12:22 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.