Daisy chaining 8 outlet surgeprotector to UPS

Praetor

Diamond Member
Oct 14, 1999
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I'm looking into investing in a small UPS for my network gear. Unfortunately, I have too many plug-in devices to be powered by the 3-4 allowed outlets.

I know daisy-chaining UPS' together won't work with consumer grade stuff. Would there be any consequences to connecting a fully-loaded 8-outlet surge protector into one plug on the UPS?

I figured out my usage requirements based off of the listings in the manuals or plugs. I would be using 56v 9.95A 69W total.
 

BonzaiDuck

Lifer
Jun 30, 2004
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I'd feel more comfortable doing that if it were just a simple power-strip -- without surge protection.

However, if the devices are such things as USB hard-disks, ethernet switches, KVMs, etc., and if you plug your PC and monitor directly to the UPS, I wouldn't fret too much about it.

My own strategy: run the surge-protector off the wall-socket for such devices, and reserve the UPS for computer and monitor. If the KVM switch requires DC power, you may want to put it behind battery-power as well.

My PSU software is set to automatically shut down the connected devices after 3 to 5 minutes. This, by itself, would make it feasible to power the KVM switch separately.

For my USB external drives, I have enclosures that are all the same, and simply keep one transformer connected and at the ready -- moving the USB and power plugs between the drives as necessary. That also may make it feasible to put the USB-drive power behind the UPS.

EDIT: WHOOPS! You want to use it for your NETWORK GEAR! Myself, I have my ethernet switch and a print-server box connected to such a UPS. Don't have the number of devices to worry about -- there are other UPS's in the house to cover other parts of my network items . . . .
 

Praetor

Diamond Member
Oct 14, 1999
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Yup. My server and primary HTPC both have their own, dedicated UPS'. Since I now have a little area for my network and video backend stuff in my new house, I can't share the UPS'.

Would there be any interference from the "surge protection" aspects of the strip outlet I'm using and the UPS?
 

Modelworks

Lifer
Feb 22, 2007
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You can use a surge protector connected to the UPS . As long as you don't go over the UPS power limit you are fine. The surge protector will not interfere with the UPS in any way.
 

BonzaiDuck

Lifer
Jun 30, 2004
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Originally posted by: Modelworks
You can use a surge protector connected to the UPS . As long as you don't go over the UPS power limit you are fine. The surge protector will not interfere with the UPS in any way.

That even clarifies it for me, even as I attempted to offer advice. The most certain thing I remember: "Never attempt to daisy-chain PSU's."

The varistor components on typical surge-strips tend to wear out over time, but running a surge-protector behind a PSU -- which provides square-wave surge-protected power -- might even reduce the wear and tear on the surge strip -- I'm guessing, anyway . . .
 

Zepper

Elite Member
May 1, 2001
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Actually surge protectors have devices that can fail in shorted mode (supposed to fail open but sometimes they don't). UPS load protection should trip, but... Use a plain power strip(s) on the downstream side of the UPS.

.bh.
 

Arcanedeath

Platinum Member
Jan 29, 2000
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Don't use Surge protectors on the Battery backed up side of the UPS, use normal power strips w/out surge protection & you should be fine as long as you don't overload the 1 outlet on the UPS. The forgiving element in surge protectors can cause problems for UPS's.