[Elecraft] power requirements for a K3S, KPA500, KAT500, P3?

David Christ radioham at mchsi.com
Wed Jun 13 23:25:45 EDT 2018


DO NOT change the breaker


I am concerned about your so blithely talking about just changing the breaker.  The breaker is there to protect the wire and is sized according to the wire.  Do not increase the size of the breaker without verifying what the wire gauge is.  Quite likely if the breaker is now 15 amp the wire is probably #14.  This is common in residential situations.  Increasing the breaker will create a fire hazard.  Whether that circuit is sufficient depends on the length of the run as well as the size of the wire. Smaller wire and longer runs will have more voltage drop which is not good.  Others on this reflector can give you more detail on this.


The Alinco should do OK for the K3S, KAT500, and P3. It doesn’t power anything in the KPA500.

David K0LUM

> On Jun 13, 2018, at 10:02 PM, Michael Gillen via Elecraft <elecraft at mailman.qth.net> 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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