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power requirements for a K3S, KPA500, KAT500, P3?

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john@kk9a.com

power requirements for a K3S, KPA500, KAT500, P3?

It should be fine to run the KPA500 at reduced power using your existing
15 amp outlet, unless you have a lot of other stuff plugged in. You can
always add a 240v outlet later. I ran a separate 20 amp 120v outlet along
with a new 240v outlet into the shack. Your 30 amp power supply is
adequate for the K3S and P3.

GL
John KK9A

Michael Gillen KK6RWK wrote:

Kind of a dumb question however here goes:

I got my K3S a short while ago and now I want to add the KPA500 and KAT500
to it however it just now occurred to me that I should check how much
juice I need to power that thing!

I’m currently using an Alinco DM-330MV which I believe puts out 30A
continuous however its probably plugged into one the house 15A lines.

So my questions are:

1) Will 15A house line supply enough juice for the K3S, KPA500, KAT500,
and in the future a P3 Panadaper?

2) If not can I get away with replacing the breaker with a 20A breaker? 30A?

3) Will the Alinco be big enough or should I upgrade that as well?

Thanks guys,
Michael

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Re: power requirements for a K3S, KPA500, KAT500, P3?

Michael,
Do NOT replace the breaker with a larger current breaker UNLESS the wiring is rated for the extra current.
15A = 14 gage wire
20A = 12 gage wire
30A = 10 gage wire

Harlan
K4HES

Sent from my iPhone

> On Jun 14, 2018, at 7:14 AM, "[hidden email]" <[hidden email]> wrote:
>
> It should be fine to run the KPA500 at reduced power using your existing
> 15 amp outlet, unless you have a lot of other stuff plugged in. You can
> always add a 240v outlet later. I ran a separate 20 amp 120v outlet along
> with a new 240v outlet into the shack. Your 30 amp power supply is
> adequate for the K3S and P3.
>
> GL
> John KK9A
>
>
> Michael Gillen KK6RWK wrote:
>
> Kind of a dumb question however here goes:
>
> I got my K3S a short while ago and now I want to add the KPA500 and KAT500
> to it however it just now occurred to me that I should check how much
> juice I need to power that thing!
>
> I’m currently using an Alinco DM-330MV which I believe puts out 30A
> continuous however its probably plugged into one the house 15A lines.
>
> So my questions are:
>
> 1) Will 15A house line supply enough juice for the K3S, KPA500, KAT500,
> and in the future a P3 Panadaper?
>
> 2) If not can I get away with replacing the breaker with a 20A breaker? 30A?
>
> 3) Will the Alinco be big enough or should I upgrade that as well?
>
>
> Thanks guys,
> Michael
>
> ______________________________________________________________
> 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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john@kk9a.com

Re: power requirements for a K3S, KPA500, KAT500, P3?

I did not suggest changing the breaker. I wrote either use what he has at
reduced output or install at least one new dedicated circuit.

John KK9A

Sent via the Samsung Galaxy 7 edge, an AT&T 4G LTE smartphone.

On Thu, Jun 14, 2018 at 8:26 AM, Harlan Sherriff <[hidden email]>
wrote:

> Michael,
> Do NOT replace the breaker with a larger current breaker UNLESS the wiring
> is rated for the extra current.
> 15A = 14 gage wire
> 20A = 12 gage wire
> 30A = 10 gage wire
>
> Harlan
> K4HES
>
> Sent from my iPhone
>
> > On Jun 14, 2018, at 7:14 AM, "[hidden email]" <[hidden email]> wrote:
> >
> > It should be fine to run the KPA500 at reduced power using your existing
> > 15 amp outlet, unless you have a lot of other stuff plugged in. You can
> > always add a 240v outlet later. I ran a separate 20 amp 120v outlet
> along
> > with a new 240v outlet into the shack. Your 30 amp power supply is
> > adequate for the K3S and P3.
> >
> > GL
> > John KK9A
> >
> >
> > Michael Gillen KK6RWK wrote:
> >
> > Kind of a dumb question however here goes:
> >
> > I got my K3S a short while ago and now I want to add the KPA500 and
> KAT500
> > to it however it just now occurred to me that I should check how much
> > juice I need to power that thing!
> >
> > I’m currently using an Alinco DM-330MV which I believe puts out 30A
> > continuous however its probably plugged into one the house 15A lines.
> >
> > So my questions are:
> >
> > 1) Will 15A house line supply enough juice for the K3S, KPA500, KAT500,
> > and in the future a P3 Panadaper?
> >
> > 2) If not can I get away with replacing the breaker with a 20A breaker?
> 30A?
> >
> > 3) Will the Alinco be big enough or should I upgrade that as well?
> >
> >
> > Thanks guys,
> > Michael
> >
> > ______________________________________________________________
> > 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]
>
>

Jim Brown-10

Re: power requirements for a K3S, KPA500, KAT500, P3?

In reply to this post by john@kk9a.com

On 6/14/2018 4:14 AM, [hidden email] wrote:
> It should be fine to run the KPA500 at reduced power using your existing
> 15 amp outlet, unless you have a lot of other stuff plugged in.

No power reduction is required -- let's do the simple math. The KPA
draws about 10A at 120v keydown. That 12v (probably 13.8V) supply
shouldn't draw much more than about 2A when the K3 is driving the
KPA500, because the KPA needs less than 30W to get to full power. The
13.8V supply should draw no more than about 2A with the K3 barefoot at
full power keydown.

73, Jim K9YC

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Re: power requirements for a K3S, KPA500, KAT500, P3?

John, I didn’t think you were suggesting changing breakers. The original post asked if he could change out breakers to a 20A or 30A breaker.

Sent from my iPhone

> On Jun 14, 2018, at 1:39 PM, Jim Brown <[hidden email]> wrote:
>
>> On 6/14/2018 4:14 AM, [hidden email] wrote:
>> It should be fine to run the KPA500 at reduced power using your existing
>> 15 amp outlet, unless you have a lot of other stuff plugged in.
>
> No power reduction is required -- let's do the simple math. The KPA draws about 10A at 120v keydown. That 12v (probably 13.8V) supply shouldn't draw much more than about 2A when the K3 is driving the KPA500, because the KPA needs less than 30W to get to full power. The 13.8V supply should draw no more than about 2A with the K3 barefoot at full power keydown.
>
> 73, Jim K9YC
>
> ______________________________________________________________
> Elecraft mailing list
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>
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