Re: My PC was hit with lightning and now Microcenter is looking at it.
- From: w_tom <w_tom1@xxxxxxx>
- Date: Wed, 11 Jul 2007 17:10:07 -0700
On Jul 11, 3:43 pm, Bogwitch <Bogwi...@xxxxxxxxxxxxxxxxxxx> wrote:
Leythos wrote:
GET A UPS (APC Backups 700 or larger) and make sure that the outlet is
grounded and that all COMPUTER parts are connected to the UPS, even
your printer needs to be on the SURGE protection side.
Most UPS's clearly state that laser printers must NOT be connected to
the UPS. I believe the inductive nature of the load can cause problems.
Why would Leythos recommend printers on a UPS? He does not have
basic electrical knowledge. It is called a 'computer grade' UPS.
When in battery backup mode, UPS electricity can be so 'dirty' as to
even harm small electric motors - such as in some printers.
Some numbers that board swappers would not understand. This 120
volt UPS, for example, outputs two 200 volt square waves with a spike
of up to 270 volts between those square waves. Manufacturer calls
this a modified sine wave. This is 'clean' electricity? Clean enough
for computers because computers have robust internal protection. (Same
internal protection that also requires direct lightning strikes to be
earthed before entering the building.) That same UPS electricity may
harm other appliances such as small electric motors. But not harm
computers that are so robust.
Bogwitch accurately corrected Leythos. Printers should not be
powered via a computer grade UPS. If Leythos had basic electrical
knowledge, then he would have also known WHY some recommend no
printers on their UPS outputs.
.
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