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Make 240V from two 120V units?

APC UPS for Home and Office Forum

Schneider Electric support forum for our APC offers including Home Office UPS, Surge Protectors, UTS, software and services and associated products designed to share knowledge, installation, and configuration.

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mlewis_apc
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Make 240V from two 120V units?

This was originally posted on APC forums on 8/6/2012


I have a weird problem on my hands and need some input which would be most appreciated.
In my main server room, I have an RT10000RMXL unit handling a small network.

I am building a new network and I need to migrate everything over which will take several weeks.
My problem is that I don't have a second UPS which has a 208/240 output yet a couple of the hardware items require 240VAC for power.
I don't have the budget to purchase another unit, especially only for a short term use.

I do have several SU3000RM3U units which are sitting idle at the moment. My question is one which I almost certainly know the answer to :).

Could I use two of the 120V units in order to get a safe 240V output in order to secure the load at the new location until I get the RT10000RMXL unit moved over to the new location.

I realize that each unit would only be able to monitor it's own outputs of 120V so while I could probably wire two outputs to get 240V, I suspect this would not be safe, even for a few weeks?


Accepted Solutions
mlewis_apc
Lt. Commander
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559

Re: Make 240V from two 120V units?

This was originally posted on APC forums on 8/13/2012


I've decided not to bother so buying a second ups.

See Answer In Context

4 Replies 4
BillP
Administrator Administrator
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Re: Make 240V from two 120V units?

This reply was originally posted by Angela on APC forums on 8/7/2012


i think the biggest issue you'd have is national electrical code and/or local electrical code. as long as the UPS gets 208v or 240v input, i don't think you'll have an issue with UPS powering on that its just the safety issue like you said. i can't comment on it from experience or anything but i imagine its not a good idea.

mlewis_apc
Lt. Commander
Lt. Commander
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559

Re: Make 240V from two 120V units?

This was originally posted on APC forums on 8/8/2012


The problem I am facing is that I only have one UPS which inputs 240v and outputs 240V.
I do have several 120V in/out units and that's why I wondered if I could in fact use two of those to get the 240V I need temporarily.

mlewis_apc
Lt. Commander
Lt. Commander
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559

Re: Make 240V from two 120V units?

This was originally posted on APC forums on 8/10/2012


So there is no way of doing this, even for a temporary, one month solution?

mlewis_apc
Lt. Commander
Lt. Commander
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560

Re: Make 240V from two 120V units?

This was originally posted on APC forums on 8/13/2012


I've decided not to bother so buying a second ups.