[Elecraft] [KPA500]KPA500 power cord question

[Monty Shultes]

I have been using an ALS-600, the 600-watt Ameritron solid state amp, for two years.  My shack is wired for 120 volts, 20 amps, 2 circuits.

The voltage from the power supply drops only slightly when transmitting, almost surely from internal factors, not house wiring.  The AC mains voltage does not drop.

I have never tripped a breaker.

The Elecraft Amp is probably more power efficient than the ALS-600 with its sophisticated power supply.  I'd worry about something else.

FWIW.

Monty K2DLJ




> The important point is whether the voltage to the finals at full output is
> as different when the KPA500 is supplied by 240 or 120V mains. I believe the
> answer is "no". AFAIK, the KPA500, and it's power supply, was designed and
> tested to meet all of its performance specifications with either a 120V or
> 240V mains supply. - Ron D'Eau Claire
> 
> 
> 
>> No. The KPA500 peak demand is less from your 120 volt outlet than
>> most household vacuum cleaners or window air conditioners. And,
>> unless you are running a full-carrier mode, the average demand by
>> your KPA500 is far  below the peak.  - Joe Subich