Re: UPS in blackouts

westom1@xxxxxxxxx wrote:

John Doe <j...@xxxxxxxxxxxxxxxxxx> wrote:

"never test a ups by just unplugging it, you need to keep it
grounded so go plug it in to a switched outlet to test or use the
circuit breaker"

Lawyers will write all kinds of precautions. Meanwhile, John Doe
ignores the so many UPSes only plugged into two wire receptacles -
without any safety ground. How can this be if death will result due
to no safety ground? Myths are alive and well.

Unfortunately, so are reckless babbling morons like you, Tom.

Ten out of ten results in the following search say you should not
pull the plug of a UPS. Leave it plugged in and use a circuit
breaker.

http://search.yahoo.com/
"test a UPS by"

"Most UPS manufacturers suggest that you not test a UPS by pulling
the plug from the wall"

"don't test a UPS by unplugging it from the wall"

"It is not safe to test a UPS by disconnecting the power at the
receptical. The reason is that you also lose your ground, which
means the entire system can float above ground. If it is connected
to other equipment like a router, etc, then those components can
experience a common mode voltage"

"never test a ups by just unplugging it, you need to keep it
grounded so go plug it in to a switched outlet to test or use the
circuit breaker"

"I had a client test a UPS by pulling the UPS power plug from the
wall - and at that instant everything crashed. I don't recall
if we lost hardware on that one"

"DO NOT test a UPS by pulling the plug from the wall. This is
dangerous (creates a "floating ground" shock hazard), and its bad
for electronic devices"

"You are not supposed to test a UPS by unplugging it since you have
then removed the ground"

"This incident shows why you should never test a UPS by pulling the
utility power cord"

"Never test a UPS by pulling its power cord or the local network
wire will float above ground and you might fry the router and
everyone's NIC"




--
http://www.flickr.com/photos/27532210@N04/3056505603
.

Relevant Pages

  • Re: UPS in blackouts
    ... Is it OK if you pull the power cord by its plug? ... I am not an electrician but as I see it a UPS is designed ...
    (alt.comp.hardware.pc-homebuilt)
  • Re: MPG Indicator
    ... I know you're not suppose to plug a laser printer into ... But would a UPS work with a 32-inch CRT television, DVD, VCR, etc.? ... The UPS can feed any electronic load IF it's big enough. ...
    (alt.autos.toyota)
  • Re: MPG Indicator
    ... I know you're not suppose to plug a laser printer into ... But would a UPS work with a 32-inch CRT television, DVD, VCR, etc.? ... you're not even supposed to plug a Laser Printer into a Surge ...
    (alt.autos.toyota)
  • Re: ups installation question
    ... Do NOT plug a power strip into a UPS, ... I have not read about "some ups's having their outlets too close to each ... Any UPS designed for the SOHO market is also a surge protector. ...
    (alt.sys.pc-clone.dell)
  • Re: UPS configuration!
    ... Yeah probably nothing will happen if I pull the plug but I figure it doesn't ... > ground is missing when you unplug the ups from the wall. ... but not the earth ground. ... > server components. ...
    (microsoft.public.windows.server.sbs)