power-fail monitor ??
Thad P Floryan
thad at cup.portal.com
Tue Oct 9 05:13:39 AEST 1990
rhaar at rcsrlh.Berkeley.EDU (Bob Haar CS50) in <34900 at rphroy.UUCP> writes about
using a UPS with his UNIXPC.
Due to recent workload I've only had a few minutes each day to read Usenet,
but always at least look at the UNIXPC newsgroups. One item in Bob's posting:
`` [...]
ps:(2) I made a test to see how long the UPS would last. After
charging the battery overnight, I unplug the UPS from the wall socket.
[...]
''
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
For YOUR safety, do not EVER unplug devices such as a UPS or SPS from a wall
socket to test them: you lose the protective grounding of the 3rd prong.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Instead, use a switchable power strip into which the UPS (or SPS) can be
plugged, then flip the strip's switch to OFF for testing the UPS (assuming
your UPS/SPS doesn't have a self-test switch).
Alternately, again leave the UPS/SPS plugged into the wall socket in areas
where extension cords and/or power strips aren't permitted (such as Palo Alto,
CA, as one for-instance), then manually trip the circuit breaker servicing
that wall outlet.
Thad Floryan [ thad at cup.portal.com (OR) ..!sun!portal!cup.portal.com!thad ]
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