J
John Doe
Everything from UL is about human safety. Surge protection is not
about human safety.
Tom feels betrayed... as a child, he was connected to a surge
suppressor, and it didn't work.
Everything from UL is about human safety. Surge protection is not
about human safety.
I have brought this up /so many/ times that I am beginning to
forget to say /IN WINDOWS/.
OF COURSE you can do it in DOS. But that was not what I was
asking, my apologies for not making it clearer.
DOS box/command line from within Windows does not count either.
WINDOWS. Nothing else. No DOS, no add-ons, no plug-ins, no other
apps.
(It's never occurred to me, but I suppose one /could/ argue that
DOS is a third party app, or point out that most Windows OS's
were just very bloated DOS apps, but let's just pretend that DOS
and Windows came out of one garage but that Windows knows
nothing about DOS.)
Bud promotes plug-in protectors.
Bud would have us believe UL1449 was created in 1998.
If Bud
admits to the problem in these scary pictures, then profits are at
risk:
http://www.hanford.gov/rl/?page=556&parent=554
A protector can even fail during UL testing and still obtain UL
approval. UL is not testing for protector effectiveness. UL1449 is
testing for threats to human safety - ie fire.
Bud routinely posts half facts. For example, Bud cites François
Martzloff while forgetting what Martzloff says about plug-in (point of
connection) protectors. First conclusion in Marzloff's IEEE paper (on
the Upside Down house) says:
Bud's IEEE guide further
demonstrates that problem with unearthed protectors. Page 42 (of 61
pages) Figure 8 shows a protector earthing a surge 8000 volts
destructively through the adjacent TV.
No protector absorbs or stops surge energy as Bud claims.
Bud refuses to post specs
Or IEEE Emerald Book:
geoff said:Model number of the suppressors you are talking about?
Windows 95/98/ME were "bloated DOS apps". Modern versions
of Windows (2000 and up) aren't DOS based,
and have
precious little to do with DOS beyond having a similar
command line interface, and in some cases, the ability to
virtualize a DOS environment for backward compatibility.
A Windows command line is *not* DOS, it's exactly what it's
called, Windows command line.
If you're going to rule out
Windows components, then you could just as easily argue
that Windows doesn't have a way to edit text files after
ruling out Notepad and Wordpad.
w is too stupid to know the difference between a creation date and a
revision date.
You cannot really suppress a surge altogether, nor
"arrest" it. What these protective devices do is
neither suppress nor arrest a surge, but simply
divert it to ground, where it can do no harm.
A very important point to keep in mind is that your
surge protector will work by diverting the surges to
ground. The best surge protection in the world can
be useless if grounding is not done properly.
... it was used only to see if products fail safely. Cutler Hammer also states:
The unit must not fail unsafely.
westom1 said:Another common problem seen long after UL1449 was industry
standard:
scary pictures
So Bud posts insults
Honesty is not Bud.
Again the sales promoter
does not post a single manufacturer spec
that claims surge protection. He cannot.
Bud will keep posting unitl
he gets the last reply because that (spin, myths, and half truths) is
his job.
Martzloff says plug-in protectors
IEEE even shows how plug-in surge protectors
can earth surges 8000 volts destructively through adjacent appliances.
Bud posts "the only effective way of protecting the equipment is to
use a multiport
[plug-in] protector."
when even Bud admits that a 'whole house'
protector is more than effective.
Why do telcos not waste money
on Bud's plug-in protectors?
No wonder every IEEE Standard (see previous post) recommends what
always provides protection: earthing.
No wonder Bud instead replies
with insults.
Did Bud forgot
to mention what the NIST really says provides protection?
Another common problem seen long after UL1449 was industry standard:
Most every fire department has seen examples of what
Bud must deny to protect sales:
http://www.hanford.gov/rl/?page=556&parent=554
Cutler Hammer even defines the purpose of a
surge test:
What Bud posts has no credibility where
engineering principles are discussed.
How does his protector stop or absorb all that surge energy?
Bud
claims his protector makes surge energy dissappear.
Honesty is not Bud.
geoff said:It is not fraudulent to use the UL label if the manufacturer says that their
product performs a certain way and UL says, 'yep, the manufacturer was
truthful'.
The same as medicine, if your medicine says 50 mg of aspirin on the label
and the FDA tests it and it indeed has 50 mg of aspirin, it is not
fraudulent to use the FDA name.
For one of the supressors you listed below, F9M923-08, UL lists it here:
http://database.ul.com/cgi-bin/XYV/...n=versionless&parent_id=1073995792&sequence=1
. . . the table says:
'These products have been tested to verify that transient voltage surges are
limited to the maximum applitudes specified by the manufacturer.'
. . . and if you read further into the links, the UL 1449 column means:
'"IEEE Recommended Practice on Surge Voltages in Low-Voltage AC Power
Circuits", using the test procedures specified in UL 1449'
. . . meaning the testing procedures of UL 1449 were used to determine if
the SVR (supressed voltage rating) matches what the manufacturer says. If
it does match then Belkin can use their logo.
The table does not say that the product meets all the specs of UL 1449 and
the supressor is not marked:
"Classified in Accordance with IEEE C62.41-1991, Recommended Practice"
A service panel suppressor will not limit voltage between power and
phone/cable wires, as in the IEEE example above.
Well I assert, from personal and broadcast experience spanning
30 years, that you can design a system that will handle *direct
lightning strikes* on a routine basis. It takes some planning and
careful layout, but it's not hard, nor is it overly expensive. At
WXIA-TV, my other job, we take direct lightning strikes nearly
every time there's a thunderstorm. Our downtime from such
strikes is almost non-existant. The last time we went down from a
strike, it was due to a strike on the power company's lines
knocking *them* out, ...
Since my disasterous strike, I've been campaigning vigorously to
educate amateurs that you *can* avoid damage from direct strikes.
The belief that there's no protection from direct strike damage is
*myth*. ...
The keys to effective lightning protection are surprisingly simple,
and surprisingly less than obvious. Of course you *must* have a
single point ground system that eliminates all ground loops. And
you must present a low *impedance* path for the energy to go.
That's most generally a low *inductance* path rather than just a
low ohm DC path.
Today, the cable company came to replace a wire. Well the cable
man pulled a wire and somehow yanked loose their "ground" wire.
The granddaughter on the computer yelled and ran because sparks
and smoke were coming from the power surge strip.
the appropriate requirements of the UL 1449 standard.
A classic example of Bud posting a half truth.
Bud's myth is promoted using word association. Surge protector
sounds like surge protection. Therefore a surge protector MUST
provide surge protection.
Bud conveniently forgets to provide any manufacturer spec for surge
protection.
As a sales promoter of surge protectors, Bud
Another example of Bud spinning half truths. Yes, the IEEE Emerald
Book does discuss using plug-in protectors for special applications –
for a surge that typically causes no damage.
But again Bud also avoids this question. Where does that surge
energy get harmlessly dissipated?
Of course Bud will reply incessantly
geoff said:You will have to discuss that with UL.
I am only quoting their website and
what they write about your supressor, and it does not state the above. It
is certainly your option to ignore and/or extend what UL writes to fit your
beliefs.
process for surge suppressors.
Repeating:
Read the Cutler-Hammer technical note (posted in my response to w)
http://tinyurl.com/63594d
The technical note makes clear that testing is done by UL.
My half truth came from the IEEE.
In the case of the "IEEE example above", a ground wire from cable entry
block to the power service ground that is too long, the IEEE guide says
"the only effective way of protecting the equipment is to use a
multiport [plug-in] protector."
Lightning surges cannot be stopped, but they can be diverted. The
plans for the data center should be thoroughly reviewed to identify
any paths for surge entry into the data center. Surge arrestors can
be designed into the system to help mitigate the potential for lightning
damage within the data center. These should divert the power of the
surge by providing a path to ground for the surge energy. ... The
specific design of the lightning protection system for the data center
will be dependent on the design of the building and utilities and
existing protection measures.
A very important point to keep in mind is that your
surge protector will work by diverting the surges to
ground. The best surge protection in the world can
be useless if grounding is not done properly.
Bud claims a protector works without earthing. He must. OtherwiseYou cannot really suppress a surge altogether, nor
"arrest" it. What these protective devices do is
neither suppress nor arrest a surge, but simply
divert it to ground, where it can do no harm.
My half truth came from the IEEE. In the case of the "IEEE
example above", a ground wire from cable entry block to the power
service ground that is too long, the IEEE guide says "the only
effective way of protecting the equipment is to use a multiport
[plug-in] protector."
Why does every IEEE Standard require earthing for protection?
Bud quotes selectively and deceptively because that is what sales
promoters do.
Meanwhile every responsible source says earthing provides the
protection.
Even Ben Franklin demonstrated the concept in 1752 with lightning
rods.
Bud's posts are about denial.
Another responsible source describes what is required for surge
protection. "Planning guide for Sun Server room"
Just another responsible source defining what provides real world
surge protection.
plug-in protectors must either stop, absorb, or make that surge
magically disappear.
Protection is defined as _diverting_ surge energy to earth ground.
Bud denies this.
Bud does not promote real world solutions.
Bud's multiport protector must stop or absorb the entire surge
because energy does not magically disappear.
That UPS has one function - to protect hardware from power loss.
Not from hardware damage. Not from the typically destructive
surge. Only from power loss.
My half truth came from the IEEE.
In the case of the "IEEE example above", a ground wire from cable entry
block to the power service ground that is too long, the IEEE guide says
"the only effective way of protecting the equipment is to use a
multiport [plug-in] protector."
No earth
ground means no effective protection.
geoff said:I read what Cutler-Hammer wrote but I'm going by what UL writes. Since the
two do not match, I'm assuming UL is printing the correct information on
their web page.
w's religious blinders only allow him to read about earthing.
He can't read what numerous sources in this thread say about plug-in
suppressors.
The best surge protection in the world can be useless
if grounding is not done properly.
... objectionable difference in reference voltages ... occur
even when or perhaps because, surge protective devices
are present at the point of connection of appliances.
The granddaughter on the computer yelled and ran because
sparks and smoke were coming from the power surge strip.
15. Surge Protection.
Entering or exiting metallic power, intrusion detection,
communication antenna, and instrumentation lines must have
surge protection sized for lightning surges to reduce transient
voltages to a harmless level. Install the surge protection as
soon as practical where the conductor enters the interior of
the facility.