You know, the unbelievable part of this discussion is how quickly people
weigh in with their opinions having no facts to back them up. Putting the
rigs of other people at risk because "I feel" or "I find it easier to
believe..." or "search google" are without a doubt the most self-serving,
grandiose proclamations I've seen lately. If you think fuses are better,
take it up with Ten-Tec or with a mystic and use fuses on your own rigs. A
man asked the best way to connect the wires to his magnetic circuit breaker
and was answered by somebody who told him that a circuit breaker was not as
good (fast) as a fuse.
I would respectfully suggest that until one can back up his opinions with
some independently verifiable facts by citing such, he keep them to himself.
This is not alchemy. It is not Zen. It is, we hope, a fairly reliable
source of pretty good advice based upon our experience or facts.
I renew my call to any of you diviners: please find and link all of us to
specifications for ANY fuse which will operate at 18 DC amps and trip at
24.9 DC amps in 10 to 20 milliseconds or less. We await your reply.
Mike N4NT
----- Original Message -----
From: "Ken Brown" <ken.d.brown@hawaiiantel.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Sunday, June 18, 2006 3:08 PM
Subject: Re: [TenTec] Using Airpax breaker
Specifications for both fuses and circuit breakers are probably
available, which would include the amount of time that it take to
transition from closed to open after an over current condition begins.
When I think about the mechanics of a circuit breaker versus a fuse, and
the amount of mass which has to move in order for the path to open in a
circuit breaker versus a fuse, I find it easier to believe that the fuse
is faster. Some very smart engineers have put a lot of effort into
designing both fuses and circuit breakers, and it may be the results of
their efforts contradict my intuitive sense that a fuse opens faster.
Comparison of specification sheets ought to settle it.
Ken N6KB
Tommy wrote:
Hi Art,
I agree with you Art. It is true this should not become a 'fuss'
because Mike is correct and your statement is simply incorrect. End
of story. Period!
Happy Fathers Day.....
Tom - W4BQF
At Sunday 09:56 AM 6/18/2006, you wrote:
Sorry Mike you are very very wrong. Fuses are always used when one
wants the best protection for solid state equipment or even in large
industrial applications for motors etc they are mandatory. But I don't
plan on getting into an on line fuss so this is my last email on the
subject. If anyone is interested just do a google search.
Best
Art
Mike Hyder -N4NT- wrote:
Because I believe that people have the right to be wrong, I normally
wouldn't respond to this. Art is 100% wrong. I want nobody to lose a
rig
because of his advice. The Air-Pax circuit breakers are much faster
than
fuses. A fuse will not separate quick enough to reliably protect a
rig.
About how to connect them: I crimp the spade connectors to the wires
and
slide them onto the contacts of the Air-Pax. I do not know the
best way but
my way works find and runs no risk of heat damage to the breaker.
73, Mike N4NT
----- Original Message -----
From: "Rideout Family" <wa6ipd@dslextreme.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Sunday, June 18, 2006 5:29 AM
Subject: Re: [TenTec] Using Airpax breaker
If you are looking for over current protection fuses are the way to go
they can clear in 1/2 cycle or less. Circuit breakers are mechanical
devices with moving parts, and break the circuit too slowly.
Art,
WA6IPD
Kirk Braunius wrote:
How do some of you on the list mount Airpax breakers in a power line
between
p/s and radio? I'm planning on putting mine in a small metal box.
Do
you
attach spade connectors to your power line and slip onto breaker, or
solder
directly to the breaker? If soldering, what kind of mechanical
connection
do you start with?
Thanks,
Kirk
AI4PZ
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