Re: Surge protectors to use with home electronics when grounding is not available?

On Mon, 30 Jun 2008 12:09:51 -0700 (PDT), w_tom <w_tom1@xxxxxxx>
wrote:

On Jun 29, 8:43 pm, John Fields <jfie...@xxxxxxxxxxxxxxxxxxxxx> wrote:
Nothing of any consequence.

So John, where is any professional citation that says characteristic
impedance is relevant? Nothing.

Where is this professional citation that says common mode surges -
what lightning creates - are not typically destructive surges?
Nothing.

Where is this professional citation that says a hot to neutral surge
is not eliminated (reduced) by that same one 'whole house' protector?
Nothing.

Why is a peer reviewed front page article in a highly regarded
electrical engineering publication not relevant? Its title:
"Protecting Electrical Devices from Lightning Transients". John
somehow knows industry professionals are wrong?

You have even confused characteristic impedance with wire impedance.
Why do you ignore wire impedance and discuss irrelevant wire
resistance? Your denials are based only in insults?

Why does every telco install 'whole house' protectors and not waste
money on plug-in protectors? For better protection, why do telcos
locate protectors distant from electronics - up to 50 meters? For
better protection, why do telcos install even better earthing and
connect 'whole house' protectors as short as practicable to that
earthing? John says telcos are also loony?

And where is that plug-in protector spec that claims protection?
Oh. No plug-in protector will list protection from each type of
surge. But you know that plug-in protector is effective?

Where does John Fields post a solution for the OP whose building
only has two wire receptacles? You provide no useful answers.

OP's solution is simple, more effective, and less expensive than
plug-in protectors. Similar to a solution implemented by all telcos,
commercial broadcasters, rocket launch facilities, and military
bases. A 'whole house' protector with breaker box earthing is
upgraded to post 1990 National Electrical Code standards. Complete
surge protection installed for about $1 per protected appliance.

Why does John Fields recommend using three wire power strip
protectors on two wire receptacles? How do John's insults prove
science or assist the OP? John even denies lightning creates common
mode surges. A protector is only as effective as its earth ground as
noted by numerous above and responsible sources. Meanwhile, the OP
cannot use plug-in protectors. His best solution is the standard
solution used everywhere when surge damage is not acceptable.

---
Well, I see from your outburst that you've been confounded by my
excellent ASCII art schematics and my lucid explanation of why and how
two-wire plug-in TVS-based surge suppressors can be used to good
advantage in premises without (or with unused) earth grounding.

That is, after all, the topic as indicated by the subject line.

If you'd like to discuss whole-house surge protection I suggest you
start another thread with a subject which reflects that topic

I also realize from your questions (which you pose as sarcastic
challenges) that you don't understand the subject matter involved and
hope that I'll "vindicate" myself by coming back with answers which
you can then study up on and pretend you knew them all along, as
you've done with "common mode" and "characteristic impedance".

Sorry, Charlie, I don't play that way.

JF
.

Relevant Pages

  • Re: belkin power conditioner for my Samsung LCD - is it worth it???
    ... protectors won't have anywhere to divert the lightning. ... As I have said more than once, the IEEE guide explains that plug-in suppressors work by clamping the voltage on all wires to the common ground at the suppressor. ... They do NOT work primarily by earthing the surge. ... But my plug-in protector was rated at a higher current | than occurred in any case, and the energy rating was higher than | occurred except the strong hit the building. ...
    (alt.tv.tech.hdtv)
  • Re: Surge protectors to use with home electronics when grounding is not available?
    ... So John, where is any professional citation that says characteristic ... Where is this professional citation that says a hot to neutral surge ... You have even confused characteristic impedance with wire impedance. ... Why does every telco install 'whole house' protectors and not waste ...
    (sci.electronics.basics)
  • Re: Is Zone Alarm necessary with a DSL firewall?
    ... SURGE, he's there within hours, almost like he used Google Groups to ... But myths posted by Leythos and some others ill ... protectors are promoted mostly by myths. ... posted junk science reasoning to prove his ...
    (microsoft.public.windowsxp.basics)
  • Re: Band Uisng Tripplite Line Conditioners/surge-suppressor
    ... Bud even ignores his own citation. ... Since a surge ... Bud reads selectively to promote plug-in protectors. ... Posting insults and myths proves plug-in protectors effective. ...
    (alt.guitar.amps)
  • Re: HP Wont Power On
    ... We had a thunderstorm last night, and the power went out. ... printer plugged into a surge suppressor, but I wasn't able to shut down ... Protectors that don't have a dedicated 'less than 10 foot' ... connection to earth may even contribut to damage of the adjacent ...
    (comp.sys.mac.printing)