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.
	[...]
''

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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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