B
Bud--
w_tom said:If that were true, then no protectors have tripped the indicator light
- are no longer operational. That light trips only when surges exceed
MOV Absolute Maximum Ratings - vaporize - or disconnect quickly
In a guide Martzloff said "In fact, the major cause of TVSS [surge
suppressor] failures is a temporary overvoltage, rather than an
unusually large surge."
Plug-in suppressors are available in ratings from junk to very high. Buy
a suppressor with adequate ratings. Manufacturers even provide connected
equipment warranties for some suppressors with high ratings.
- or
blow 'fire and sparks' as in these scary pictures do not happen:
http://www.westwhitelandfire.com/Articles/Surge Protectors.pdf
http://www.hanford.gov/rl/?page=556&parent=554
http://www.zerosurge.com/HTML/movs.html
http://www.nmsu.edu/~safety/programs/gen_saf/surgeprotectorfire.htm
For anyone with minimal reading skills the hanford link talks about
"some older model" power strips and specifically references the revised
US - UL standard, effective 1998, that requires a thermal disconnect as
a fix for overheating MOVs. Overheating was fixed in the US in 1998."
None of these links indicate the problem suppressors shown had UL
labels. And none of these links say there is any problem with
suppressors under the current UL standard. Or that plug-in suppressors
shouldn't be used. The links do give info on how to use plug-in suppressors.
If surges were so small, then those failed indicator lights would
never trip. Then those scary pictures would not happen. These scary
pictures exist because too much energy is absorbed by a protector in
direct contradiction to Bud's post. 'Sparks and fire' protection failed
to disconnect MOVs that were grossly undersized.
Grossly undersized is a red herring. Suppressors with high ratings are
readily available. Simply don’t buy junk. My post was based on research
by Martzloff. You disagree with Martzloff? Where is your source?
And again the fire scare tactic w_’s source said was fixed in 1998.
To achieve UL1449 ratings, many protectors disconnect protection
circuits so quickly that even the most trivial surge will trip an
indicator light. Why? Protector is grossly undersized. Undersized
plug-in protectors promote more sales. A surge too small to overwhelm
protection inside the adjacent computer still killed a plug-in
protector. But Bud says this protector only sees 35 joules. Therefore
those scary pictures and tripped indicator lamp do not exist?
Grossly undersized red herring #2.
Scare tactics, obsolete in 1998, #3.
No documentation for “disconnect protection circuits so quickly” -
another hallucination?
Buy suppressors with adequate ratings from reputable manufacturers - not
no-name Chinese junk.
So what happens when a grossly undersized protector does not abandon
an adjacent computer to surges fast enough? Above scary pictures of
protectors on a rug or adjacent to desktop papers.
Grossly undersized red herring #3.
Scare tactics, obsolete in 1988, #4.
Bud tells us that surges are so trivial - only 35 joules? In which
case, protection inside all appliances makes the plug-in protector
irrelevant.
Provide your source that all appliances have protection for 35 Joules.
Also document what surge current they are protected for. Why does the
IEEE guide as its only 2 examples of surge protection show plug–in
suppressors?
Just another reason why one 'whole house' protector is so
effective when combined with earthing and with protection already inside
appliances. One 'whole house' protector costing about $1 per protected
appliance.
$1 using w_’s cheap suppressors, that don’t exist in the real world, and
counting light bulbs as appliances. Provide a link for your $50 whole
house suppressors. Also provide specs.
If you buy Chinese junk made before 1998 read w_ rant.
Else read the IEEE and/or NIST guides. Both say plug-in suppressors are
effective.
For kony: nothing provides absolute protection from surges or any other
hazard; get suppressors with adequate ratings (see the IEEE guide) and
use them as advised in the IEEE guide.