So Ed....

Again, I will ask you just like I did during our EMC discussion, what
percentage of boaters have an engineering degree and would understand
joules, ohms, volts, ohms law, etc. to even have an inkling of what the
information meant if it were indeed included on the web page? Even if it
were included, how would it relavent unless the matching information were
provided by the alternator manufacturer under load dump conditions?

I find it interesting that most people don't have a clue how electricity
works and couldn't troubleshoot a light switch, much less understand
alternator load dump waveforms versus load and rpm, joules dumped, whether
their alternator diodes were damaged, and on and on. How many people come
on here and ask "I have no spark and I replaced everything such as the coil,
plug wires, plugs, coil driver components (mechanical or electronic), and
there still is no spark".

I would suggest most people would just get a protector and just feel good
that there was some additional protection from battery disconnects.

To me, load dump is not mysterious, I deal with it all the time in my job
(don't ask cause I won't tell you).

Phil



"Ed Price" wrote in message
news:IGmSa.1006$Ye.415@fed1read02...

"phil" wrote in message
et...
don't be upset, Ed trolls to test your conviction and real
understanding.

"Glenn Ashmore" wrote in message
...
The tone of the debate was set by you. I was only responding.

The field coil is a gigantic inductor


And thank YOU, Phil, for your cogent contributions to this discussion.

The definition of a troll is not someone who poses a question which
confuses
you. The best trolls usually reply to any reasonable answer with a new set
of conditions which defeat the original answer. If they are fast enough,
they can keep sliding out from under your logical hammer.

I will admit that I'm quite skeptical of the claims of almost any
marketer.
When someone tells me that I need their latest gadget to protect a system
that is not known for failure, then the little BS flag starts to wiggle.

At the beginning of this thread, I went to the Xentrex site, and found
market hype, not engineering data. No schematics, no info on joules
ratings,
no waveforms of with and without a Zap-stop. It took several exchanges
just
to understand what this thing really does.

There are a vast number of auto owners, with alternator systems, who will
NEVER experience 60-amp load dumps. And there are many, many small boat
owners whose electrical systems are close copies of automotive systems,
and
they also operate under nearly the same conditions as a car. So that's
another whole cohort that will NEVER see those 60-amp load dumps.

So who does experience these load dump conditions? How often will Glenn,
in
his cruiser, be pumping 60 amps back into his battery bank? And for how
long? And with what probability that he will do a trick with the battery
changeover switch during that short period of exposure?

So help me out here, Phil; what class of vessel often sees 60-amp charging
currents? Does that class of vessel usually have switch-twiddling idiots
running the below-decks division?

It seems to me that the Zap-stop is being hyped as needed for everyone
with
an alternator, while the conditions of 60-amp load dumps are experienced
by
only a small slice of small boat owners.

Or maybe I'm just a troll.


Ed