circuit breaker
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Would anyone venture to guess what would cause the circuit breaker to trip on a K3? Mine did all of a sudden yesterday. Fortunately, my friend suggested the reset and voila, I am back on the air. But if there is an underlying cause, I think it would be wise to be aware of it so as to preclude this episode from repeating. Any thoughts are welcome.
73 todd WB2ZAB ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Check if the breaker is an AFCI type breaker. If it is there is an article on the ARRL site with details on how you might get them replaced for free.
I just went through this with mine. Homes built after 2011 have arc fault tolerant (AFCI) breakers. The RF can cause them to open. I contacted the Eaton using the information from ARRL and Eaton sent me all new breakers for free. It ended up being about $300 in breakers. Here is a link to the ARRL article. http://www.arrl.org/news/arrl-helps-manufacturer-to-resolve-arc-fault-circuit-interrupter-rfi-problems Hope this helps David KG6MTI Sent from my iPhone > On May 16, 2016, at 10:07, todd ruby <[hidden email]> wrote: > > Would anyone venture to guess what would cause the circuit breaker to trip on a K3? Mine did all of a sudden yesterday. Fortunately, my friend suggested the reset and voila, I am back on the air. But if there is an underlying cause, I think it would be wise to be aware of it so as to preclude this episode from repeating. Any thoughts are welcome. > > 73 > > todd > > WB2ZAB > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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I'm fairly sure he's talking about the circuit breaker IN the radio, rather
than an AC mains breaker Charlie k3ICH -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of David Davis Sent: Monday, May 16, 2016 12:55 PM To: todd ruby <[hidden email]> Cc: Elecraft Reflector Reflector <[hidden email]> Subject: Re: [Elecraft] circuit breaker Check if the breaker is an AFCI type breaker. If it is there is an article on the ARRL site with details on how you might get them replaced for free. I just went through this with mine. Homes built after 2011 have arc fault tolerant (AFCI) breakers. The RF can cause them to open. I contacted the Eaton using the information from ARRL and Eaton sent me all new breakers for free. It ended up being about $300 in breakers. Here is a link to the ARRL article. http://www.arrl.org/news/arrl-helps-manufacturer-to-resolve-arc-fault-circui t-interrupter-rfi-problems Hope this helps David KG6MTI Sent from my iPhone > On May 16, 2016, at 10:07, todd ruby <[hidden email]> wrote: > > Would anyone venture to guess what would cause the circuit breaker to trip on a K3? Mine did all of a sudden yesterday. Fortunately, my friend suggested the reset and voila, I am back on the air. But if there is an underlying cause, I think it would be wise to be aware of it so as to preclude this episode from repeating. Any thoughts are welcome. > > 73 > > todd > > WB2ZAB > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by todd ruby-2
I believe Todd is referring to the breaker on the K3, not his house panel circuit?Ron has some good advice, but I wonder how common this circuit breaker operates?
I looked thru my manual for more info on it. The block diagram shows it as a 25A fuse,text and device indicate 20A circuit breaker, but NO info on the type operating curve, or current vs. time for minimum trip? I have a 10A circuit breaker on my 40Ahr battery supply and it has never tripped. It is a thermal time delay like most house breakers. Anyone out there have any clue? Wayne? Mike AC5P On Monday, May 16, 2016 12:28 PM, Ron D'Eau Claire <[hidden email]> wrote: The normal underlying cause for the breaker to open is over-current. That's a 20A breaker that protects only the KPA3 100 watt amplifier module. The first thing I'd do is check the current drain from your power supply on the band where you experienced the problem. First set the power to 10 watts so the KPA3 is bypassed and note the total current drain key down. Now crank up the power and see if the part used by the KPA3 is pushing 20A. For example, if your total current at 10 W was 3A, does the total at 100 watts approach 23A? IF so, the breaker was simply doing its job. Note that circuit breakers are not precision devices so it may trip a couple of amperes one way or the other from 20A. A primary reason for excessive KPA3 current is a high SWR on your antenna system. The higher the SWR, the less efficient the KPA3 becomes and the more current it has to draw to produce the power. A defective breaker can also start tripping at lower currents. 73, Ron AC7AC -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of todd ruby Sent: Monday, May 16, 2016 9:08 AM To: Elecraft Reflector Reflector Subject: [Elecraft] circuit breaker Would anyone venture to guess what would cause the circuit breaker to trip on a K3? Mine did all of a sudden yesterday. Fortunately, my friend suggested the reset and voila, I am back on the air. But if there is an underlying cause, I think it would be wise to be aware of it so as to preclude this episode from repeating. Any thoughts are welcome. 73 todd WB2ZAB ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net/ Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Well Ron, I guess there's a first time for everything. Although the radio was deaf and dumb, I had display function and it looked as it normally does after turning on the power. There was just no receive nor output power.
I turned it off, pressed the 20 amp circuit breaker on the rear panel and sigs were coming through the headphones and I had full power. Today it's also operating perfectly. 73 Todd > On May 16, 2016, at 3:30 PM, Ron D'Eau Claire <[hidden email]> wrote: > > Todd responded to me off the reflector that he lost all power to the K3 so it wasn’t the 20A breaker. That only controls power to the KPA3. The front panel is still powered and the receiver continues to work. > > I suggested it might be the self-resetting breaker inside the K3. That will turn it off completely. Actually power will still be on the KPA3 module and anything plugged into the 12V external power connector on the K3 rear panel, but the K3 itself will look dead with no front panel lights, receive or other functions until it cools and resets itself. > > I’ve never had an issue with either breaker opening unexpectedly. > > 73, Ron AC7AC > > From: [hidden email] [mailto:[hidden email]] > Sent: Monday, May 16, 2016 12:18 PM > To: Ron D'Eau Claire; 'todd ruby'; 'Elecraft Reflector Reflector' > Subject: Re: [Elecraft] circuit breaker > > I believe Todd is referring to the breaker on the K3, not his house panel circuit? > Ron has some good advice, but I wonder how common this circuit breaker operates? > > I looked thru my manual for more info on it. The block diagram shows it as a 25A fuse, > text and device indicate 20A circuit breaker, but NO info on the type operating curve, or current vs. time for minimum trip? > > I have a 10A circuit breaker on my 40Ahr battery supply and it has never tripped. It is a thermal time delay like most house breakers. > > Anyone out there have any clue? Wayne? > > Mike AC5P > > > > On Monday, May 16, 2016 12:28 PM, Ron D'Eau Claire <[hidden email]> wrote: > > > The normal underlying cause for the breaker to open is over-current. That's > a 20A breaker that protects only the KPA3 100 watt amplifier module. The > first thing I'd do is check the current drain from your power supply on the > band where you experienced the problem. First set the power to 10 watts so > the KPA3 is bypassed and note the total current drain key down. Now crank up > the power and see if the part used by the KPA3 is pushing 20A. For example, > if your total current at 10 W was 3A, does the total at 100 watts approach > 23A? IF so, the breaker was simply doing its job. Note that circuit breakers > are not precision devices so it may trip a couple of amperes one way or the > other from 20A. > > A primary reason for excessive KPA3 current is a high SWR on your antenna > system. The higher the SWR, the less efficient the KPA3 becomes and the more > current it has to draw to produce the power. > > A defective breaker can also start tripping at lower currents. > > 73, Ron AC7AC > > -----Original Message----- > From: Elecraft [mailto:[hidden email]] On Behalf Of todd > ruby > Sent: Monday, May 16, 2016 9:08 AM > To: Elecraft Reflector Reflector > Subject: [Elecraft] circuit breaker > > Would anyone venture to guess what would cause the circuit breaker to trip > on a K3? Mine did all of a sudden yesterday. Fortunately, my friend > suggested the reset and voila, I am back on the air. But if there is an > underlying cause, I think it would be wise to be aware of it so as to > preclude this episode from repeating. Any thoughts are welcome. > > 73 > > todd > > WB2ZAB > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net/ > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Is it possible that it 'belched' and the power reset is what really fixed it?
73, Rick WA6NHC Tiny iPhone keypad, spell check happens > On May 16, 2016, at 1:40 PM, Todd Ruby <[hidden email]> wrote: > > Well Ron, I guess there's a first time for everything. Although the radio was deaf and dumb, I had display function and it looked as it normally does after turning on the power. There was just no receive nor output power. > > I turned it off, pressed the 20 amp circuit breaker on the rear panel and sigs were coming through the headphones and I had full power. > > Today it's also operating perfectly. > > 73 > > Todd > >> On May 16, 2016, at 3:30 PM, Ron D'Eau Claire <[hidden email]> wrote: >> >> Todd responded to me off the reflector that he lost all power to the K3 so it wasn’t the 20A breaker. That only controls power to the KPA3. The front panel is still powered and the receiver continues to work. >> >> I suggested it might be the self-resetting breaker inside the K3. That will turn it off completely. Actually power will still be on the KPA3 module and anything plugged into the 12V external power connector on the K3 rear panel, but the K3 itself will look dead with no front panel lights, receive or other functions until it cools and resets itself. >> >> I’ve never had an issue with either breaker opening unexpectedly. >> >> 73, Ron AC7AC >> >> From: [hidden email] [mailto:[hidden email]] >> Sent: Monday, May 16, 2016 12:18 PM >> To: Ron D'Eau Claire; 'todd ruby'; 'Elecraft Reflector Reflector' >> Subject: Re: [Elecraft] circuit breaker >> >> I believe Todd is referring to the breaker on the K3, not his house panel circuit? >> Ron has some good advice, but I wonder how common this circuit breaker operates? >> >> I looked thru my manual for more info on it. The block diagram shows it as a 25A fuse, >> text and device indicate 20A circuit breaker, but NO info on the type operating curve, or current vs. time for minimum trip? >> >> I have a 10A circuit breaker on my 40Ahr battery supply and it has never tripped. It is a thermal time delay like most house breakers. >> >> Anyone out there have any clue? Wayne? >> >> Mike AC5P >> >> >> >> On Monday, May 16, 2016 12:28 PM, Ron D'Eau Claire <[hidden email]> wrote: >> >> >> The normal underlying cause for the breaker to open is over-current. That's >> a 20A breaker that protects only the KPA3 100 watt amplifier module. The >> first thing I'd do is check the current drain from your power supply on the >> band where you experienced the problem. First set the power to 10 watts so >> the KPA3 is bypassed and note the total current drain key down. Now crank up >> the power and see if the part used by the KPA3 is pushing 20A. For example, >> if your total current at 10 W was 3A, does the total at 100 watts approach >> 23A? IF so, the breaker was simply doing its job. Note that circuit breakers >> are not precision devices so it may trip a couple of amperes one way or the >> other from 20A. >> >> A primary reason for excessive KPA3 current is a high SWR on your antenna >> system. The higher the SWR, the less efficient the KPA3 becomes and the more >> current it has to draw to produce the power. >> >> A defective breaker can also start tripping at lower currents. >> >> 73, Ron AC7AC >> >> -----Original Message----- >> From: Elecraft [mailto:[hidden email]] On Behalf Of todd >> ruby >> Sent: Monday, May 16, 2016 9:08 AM >> To: Elecraft Reflector Reflector >> Subject: [Elecraft] circuit breaker >> >> Would anyone venture to guess what would cause the circuit breaker to trip >> on a K3? Mine did all of a sudden yesterday. Fortunately, my friend >> suggested the reset and voila, I am back on the air. But if there is an >> underlying cause, I think it would be wise to be aware of it so as to >> preclude this episode from repeating. Any thoughts are welcome. >> >> 73 >> >> todd >> >> WB2ZAB >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net/ >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [hidden email] >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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I have seen breakers let go for no apparent reason. It seemed like it
was a mechanical failure in the breaker. Dick, n0ce On 5/16/2016 5:27 PM, Rick Bates (WA6NHC) wrote: > Is it possible that it 'belched' and the power reset is what really fixed it? > > 73, > Rick WA6NHC > > Tiny iPhone keypad, spell check happens > >> On May 16, 2016, at 1:40 PM, Todd Ruby <[hidden email]> wrote: >> >> Well Ron, I guess there's a first time for everything. Although the radio was deaf and dumb, I had display function and it looked as it normally does after turning on the power. There was just no receive nor output power. >> >> I turned it off, pressed the 20 amp circuit breaker on the rear panel and sigs were coming through the headphones and I had full power. >> >> Today it's also operating perfectly. >> >> 73 >> >> Todd >> >>> On May 16, 2016, at 3:30 PM, Ron D'Eau Claire <[hidden email]> wrote: >>> >>> Todd responded to me off the reflector that he lost all power to the K3 so it wasn’t the 20A breaker. That only controls power to the KPA3. The front panel is still powered and the receiver continues to work. >>> >>> I suggested it might be the self-resetting breaker inside the K3. That will turn it off completely. Actually power will still be on the KPA3 module and anything plugged into the 12V external power connector on the K3 rear panel, but the K3 itself will look dead with no front panel lights, receive or other functions until it cools and resets itself. >>> >>> I’ve never had an issue with either breaker opening unexpectedly. >>> >>> 73, Ron AC7AC >>> >>> From: [hidden email] [mailto:[hidden email]] >>> Sent: Monday, May 16, 2016 12:18 PM >>> To: Ron D'Eau Claire; 'todd ruby'; 'Elecraft Reflector Reflector' >>> Subject: Re: [Elecraft] circuit breaker >>> >>> I believe Todd is referring to the breaker on the K3, not his house panel circuit? >>> Ron has some good advice, but I wonder how common this circuit breaker operates? >>> >>> I looked thru my manual for more info on it. The block diagram shows it as a 25A fuse, >>> text and device indicate 20A circuit breaker, but NO info on the type operating curve, or current vs. time for minimum trip? >>> >>> I have a 10A circuit breaker on my 40Ahr battery supply and it has never tripped. It is a thermal time delay like most house breakers. >>> >>> Anyone out there have any clue? Wayne? >>> >>> Mike AC5P >>> >>> >>> >>> On Monday, May 16, 2016 12:28 PM, Ron D'Eau Claire <[hidden email]> wrote: >>> >>> >>> The normal underlying cause for the breaker to open is over-current. That's >>> a 20A breaker that protects only the KPA3 100 watt amplifier module. The >>> first thing I'd do is check the current drain from your power supply on the >>> band where you experienced the problem. First set the power to 10 watts so >>> the KPA3 is bypassed and note the total current drain key down. Now crank up >>> the power and see if the part used by the KPA3 is pushing 20A. For example, >>> if your total current at 10 W was 3A, does the total at 100 watts approach >>> 23A? IF so, the breaker was simply doing its job. Note that circuit breakers >>> are not precision devices so it may trip a couple of amperes one way or the >>> other from 20A. >>> >>> A primary reason for excessive KPA3 current is a high SWR on your antenna >>> system. The higher the SWR, the less efficient the KPA3 becomes and the more >>> current it has to draw to produce the power. >>> >>> A defective breaker can also start tripping at lower currents. >>> >>> 73, Ron AC7AC >>> >>> -----Original Message----- >>> From: Elecraft [mailto:[hidden email]] On Behalf Of todd >>> ruby >>> Sent: Monday, May 16, 2016 9:08 AM >>> To: Elecraft Reflector Reflector >>> Subject: [Elecraft] circuit breaker >>> >>> Would anyone venture to guess what would cause the circuit breaker to trip >>> on a K3? Mine did all of a sudden yesterday. Fortunately, my friend >>> suggested the reset and voila, I am back on the air. But if there is an >>> underlying cause, I think it would be wise to be aware of it so as to >>> preclude this episode from repeating. Any thoughts are welcome. >>> >>> 73 >>> >>> todd >>> >>> WB2ZAB >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[hidden email] >>> >>> This list hosted by: http://www.qsl.net/ >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to [hidden email] >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [hidden email] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Todd,
Was the K3 in receive or transmit mode when it went dead? 73, Scott K9MA On 5/16/2016 20:58, Richard Fjeld wrote: > I have seen breakers let go for no apparent reason. It seemed like it > was a mechanical failure in the breaker. > > Dick, n0ce > > > On 5/16/2016 5:27 PM, Rick Bates (WA6NHC) wrote: >> Is it possible that it 'belched' and the power reset is what really >> fixed it? >> >> 73, >> Rick WA6NHC >> >> Tiny iPhone keypad, spell check happens >> >>> On May 16, 2016, at 1:40 PM, Todd Ruby <[hidden email]> wrote: >>> >>> Well Ron, I guess there's a first time for everything. Although the >>> radio was deaf and dumb, I had display function and it looked as it >>> normally does after turning on the power. There was just no receive >>> nor output power. >>> >>> I turned it off, pressed the 20 amp circuit breaker on the rear >>> panel and sigs were coming through the headphones and I had full power. >>> >>> Today it's also operating perfectly. >>> >>> 73 >>> >>> Todd >>> >>>> On May 16, 2016, at 3:30 PM, Ron D'Eau Claire <[hidden email]> wrote: >>>> >>>> Todd responded to me off the reflector that he lost all power to >>>> the K3 so it wasn’t the 20A breaker. That only controls power to >>>> the KPA3. The front panel is still powered and the receiver >>>> continues to work. >>>> >>>> I suggested it might be the self-resetting breaker inside the K3. >>>> That will turn it off completely. Actually power will still be on >>>> the KPA3 module and anything plugged into the 12V external power >>>> connector on the K3 rear panel, but the K3 itself will look dead >>>> with no front panel lights, receive or other functions until it >>>> cools and resets itself. >>>> >>>> I’ve never had an issue with either breaker opening unexpectedly. >>>> >>>> 73, Ron AC7AC >>>> >>>> From: [hidden email] [mailto:[hidden email]] >>>> Sent: Monday, May 16, 2016 12:18 PM >>>> To: Ron D'Eau Claire; 'todd ruby'; 'Elecraft Reflector Reflector' >>>> Subject: Re: [Elecraft] circuit breaker >>>> >>>> I believe Todd is referring to the breaker on the K3, not his house >>>> panel circuit? >>>> Ron has some good advice, but I wonder how common this circuit >>>> breaker operates? >>>> >>>> I looked thru my manual for more info on it. The block diagram >>>> shows it as a 25A fuse, >>>> text and device indicate 20A circuit breaker, but NO info on the >>>> type operating curve, or current vs. time for minimum trip? >>>> >>>> I have a 10A circuit breaker on my 40Ahr battery supply and it has >>>> never tripped. It is a thermal time delay like most house breakers. >>>> >>>> Anyone out there have any clue? Wayne? >>>> >>>> Mike AC5P >>>> >>>> >>>> >>>> On Monday, May 16, 2016 12:28 PM, Ron D'Eau Claire <[hidden email]> >>>> wrote: >>>> >>>> >>>> The normal underlying cause for the breaker to open is >>>> over-current. That's >>>> a 20A breaker that protects only the KPA3 100 watt amplifier >>>> module. The >>>> first thing I'd do is check the current drain from your power >>>> supply on the >>>> band where you experienced the problem. First set the power to 10 >>>> watts so >>>> the KPA3 is bypassed and note the total current drain key down. Now >>>> crank up >>>> the power and see if the part used by the KPA3 is pushing 20A. For >>>> example, >>>> if your total current at 10 W was 3A, does the total at 100 watts >>>> approach >>>> 23A? IF so, the breaker was simply doing its job. Note that circuit >>>> breakers >>>> are not precision devices so it may trip a couple of amperes one >>>> way or the >>>> other from 20A. >>>> >>>> A primary reason for excessive KPA3 current is a high SWR on your >>>> antenna >>>> system. The higher the SWR, the less efficient the KPA3 becomes and >>>> the more >>>> current it has to draw to produce the power. >>>> >>>> A defective breaker can also start tripping at lower currents. >>>> >>>> 73, Ron AC7AC >>>> >>>> -----Original Message----- >>>> From: Elecraft [mailto:[hidden email]] On Behalf >>>> Of todd >>>> ruby >>>> Sent: Monday, May 16, 2016 9:08 AM >>>> To: Elecraft Reflector Reflector >>>> Subject: [Elecraft] circuit breaker >>>> >>>> Would anyone venture to guess what would cause the circuit breaker >>>> to trip >>>> on a K3? Mine did all of a sudden yesterday. Fortunately, my friend >>>> suggested the reset and voila, I am back on the air. But if there >>>> is an >>>> underlying cause, I think it would be wise to be aware of it so as to >>>> preclude this episode from repeating. Any thoughts are welcome. >>>> >>>> 73 >>>> >>>> todd >>>> >>>> WB2ZAB >>>> >>>> ______________________________________________________________ >>>> Elecraft mailing list >>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>>> Help: http://mailman.qth.net/mmfaq.htm >>>> Post: mailto:[hidden email] >>>> >>>> This list hosted by: http://www.qsl.net/ >>>> Please help support this email list: http://www.qsl.net/donate.html >>>> Message delivered to [hidden email] >>>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[hidden email] >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to [hidden email] >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [hidden email] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] -- Scott Ellington K9MA Madison, Wisconsin, USA [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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