[Elecraft] KPA500 external mains switch

[Bill Johnson]

Bob, totally agree and this is exactly what I have.  Main breaker box, whole house protection.  Lightning is, of course, a whole different conversation when it comes to direct hits. Line spikes can wear out motors, take out weak power supplies, etc., which the suppressor will protect.  

73,
Bill
K9YEQ

https://wrj-tech.com/

-----Original Message-----
From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Bob McGraw K4TAX
Sent: Friday, January 18, 2019 10:30 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] KPA500 external mains switch

I have a whole house surge protector installed at the Mains breaker panel.  Thus I find no need to have individual surge protection for any of the equipment locations in the QTH.   This takes care of microwave, range, furnace, washer, radios, TV's, entertainment systems, phone system and such.

Not sure I like or agree with the idea of a separate mains switch.  If for remote purposes, remember when turning off the amp via the front power switch, one must allow the voltage to bleed down before shutting off the main power switch on the rear.  {Per the manual}  This would seem to be true with an external switch.

I've assisted many hams with issue resolution only to find out they have and use a "big switch" or otherwise to shut down the station.  This IS NOT a good idea as many/most microprocessor circuits have provision to save data before shutting down equipment.  Thus if one uses a "big switch" it kills the DC source thus the processor does not have the opportunity to save the data status.   As to what's left......., sometimes scrambled data, and that's where the issues arise.

73

Bob, K4TAX


On 1/18/2019 10:11 AM, Macy monkeys wrote:
> Is anyone in the US using a separate 220v external mains switch on their KPA500? I'm wondering where these are available. Or is anyone using a 220 v surge protector? Are these available for the NEMA 6-15 plug?
>
> John K7FD
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