w_tom wrote:
On May 25, 3:03 am, bud-- wrote:
If the earthing electrode is only a ground rod, about 70% of the
voltage drop is in the first 3 feet from the electrode. There will be
over 7,000V from service 'ground' to earth beyond 3 feet from the rod.
The furnace is likely to sit on a conductive concrete floor over 3 feet
from the ground rod. There may be over 7,000V from power wires to
'ground' at the furnace.

Bud promotes for plug-in protectors and will say anything to avoid
admitting his conflict of interest.

Lacking valid technical arguments w_ tries to discredit opponents, as
usual. My only association with surge protectors is I have some.


So Bud starts his insults of this poster as he does everywhere.

The only insult so far is from w_ above.

For maybe the
600th time, Bud is challenged top provide a single plug-in
manufacturer spec that claims protection.

Posted often and ignored.


Why do responsible manufacturers (ie Leviton, Cutler-Hammer, Square
D, Intermatic, Keison, Intermatic, Siemens, GE, etc) sell 'whole
house' protectors?

Why do "responsible manufacturers" - all of w_'s list except SquareD -
sell plug-in suppressors?

Why does SquareD say with its "best" service panel suppressor
"electronic equipment may need additional protection by installing
plug-in ... devices at the point of use" ?


The OP asked for furnace and dish washer protection. That means
surges are earthed before entering a building AND kept away from
electronics.

Why does the IEEE guide say (for a case similar to the furnace) "Only an
appropriate protector, mounted *at the equipment*, bonding between all
line wires, neutral, and ground, can prevent damage"?


Did Bud forget to post what the IEEE says in Standards? He does
this often. From the IEEE Green Book (Standard 142):

Did w_ forget to post that the IEEE "Emerald" Book says plug-in
suppressors are effective? He does this often.

Where is any source that agrees with w_ that plug-in suppressors are NOT
effective?
Why do the only 2 examples of protection in the IEEE guide use plug-in
suppressors?
Why does the NIST guide say plug-in suppressors are "the easiest solution"?
Where is any source that agrees with w_ about "separation"?
Why doesn’t w_ ever answer questions?
Why doesn’t w_ get treatment for his obsessive-compulsive disease?

For real science read the IEEE and NIST guides. Both say plug-in
suppressors are effective.

--
bud--