[rescue] [geeks] New lamps for ... er, large UPS for smaller
Mark G. Thomas
Mark at Misty.com
Mon Jun 20 08:59:27 CDT 2005
On Mon, Jun 20, 2005 at 09:33:48AM -0400, Phil Stracchino wrote:
> Here we are, getting established in New Hampshire. We have with us here
> a fully functional SU3000RM that has now made a round trip from Hew
> hampshire to North Carolina and back to New Hampshire ... and we can't
> use it. There isn't a circuit in the house rated for enough current to
> plug it into -- it's a 120V UPS, but requires a 30A outlet.
You might consider just changing the plug or making an adapter pigtail.
So long as your 20A house receptacle has suitable gauge wire and is properly
protected by a 20A breaker or fuse, and so long as you do not plug more
than 20A worth of load into the UPS (allowing a couple Amps for UPS
charging current), I don't see a down-side to the UPS being rated
at a greater than required capacity.
Note that the UPS alone doesn't draw 30A, it is just capable of a (near)
30A load, and has an internal 30A breaker. I suppose if you want to
be super conservative, you could replace the internal UPS breaker with
one rated 20A.
> We offer this SU3000RM in trade for a working 120V SU2200RM, which will
I'll include the disclaimer that this is my personal opinion; take it
for what it's worth.
Mark G. Thomas (Mark at Misty.com)
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