Re: Turn off laser printer with power strip?
- From: "John Smith" <someone@xxxxxxxxxxxxx>
- Date: Tue, 31 Jan 2006 02:42:34 -0500
A surge protector also offers EMI/RFI filtering. Why purposely inject
trouble directly into your safety device?
I disagree with you that turning off a laser printer at its power switch, a
power strip, or a wall switch are all the same. Many laser printers (for
example, the HP Color LaserJet 4500) contain an internal fan that continues
to run for five minutes or so after the power is switched off if the printer
has recently been printing. If you turn the printer off at a wall switch or
power strip or disconnect the power cord, the fan stops running instantly
and the heat remains inside the printer. Sure, the heat will seep out
eventually and your printer won't die right away, but if you always let the
printer bake in its own heat your printer may only last five years instead
of ten (my estimates). Many products have cooling fans that continue to run
for awhile after the device is turned off. Car radiator electric fans and
overhead projector fans immediately come to mind.
"w_tom" <w_tom1@xxxxxxx> wrote in message
news:1138663066.670687.256810@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Power strip is a surge protector without those internal $0.10 parts.
> Both power strip and power strip surge protector connect that laser
> printer directly to AC mains. Remove those $0.10 parts from a power
> strip protector and install those parts inside a plug. When that plug
> is plugged into a power strip, then the power strip is electrically
> same as a power strip surge protector. Those parts - inside the power
> strip or inside an attached plug - make no difference to how a laser
> printer connects to AC mains.
>
>> It's generally not a good idea to power laser printers through a surge
>> protector because they interfere with the surge protection capability.
> I will love to see this poster prove that one. Yes, that is an open
> challenge. What is a power strip surge protector? Assuming it has an
> essential 15 amp circuit breaker, then that surge protector is
> electrically equivalent to a power strip ... as long as voltage never
> exceeds its let-through voltage rating ... 330 volts. That's right.
> That $25 surge protector does nothing as long as AC voltage does not
> exceed the let-through voltage. That $23 protector is electrically
> same as the $3 power strip when 120 volt AC does not exceed those 300
> volts. This idea that high current devices 'interfere' is classic junk
> science reasoning - complete with no reasons 'why' and no numbers.
>
> Turn off laser printer power either using its power switch, using a
> power strip, or using a wall switch. It's all the same and not
> destructive to the laser printer.
>
> John Smith wrote:
>> ...
>> You wrote "power strip," which is not the same thing as a surge
>> protector.
>> Strictly speaking, a power strip is just an extension cord with multiple
>> outlets and doesn't contain any electronics. It's generally not a good
>> idea
>> to power laser printers (or any other devices that draw large amounts of
>> current, such as space heaters, coffee pots, toasters, electric drills,
>> etc.) through a surge protector because they interfere with the surge
>> protection capability.
>
.
- References:
- Turn off laser printer with power strip?
- From: Gary Vocks
- Re: Turn off laser printer with power strip?
- From: John Smith
- Re: Turn off laser printer with power strip?
- From: w_tom
- Turn off laser printer with power strip?
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