[Elecraft] Breakers for KPA1500?

[Erik Basilier]

Don,
Yes, good point.
73,
Erik K7TV

-----Original Message-----
From: Don Wilhelm <donwilh at embarqmail.com> 
Sent: Tuesday, July 10, 2018 8:56 AM
To: Erik Basilier <ebasilier at cox.net>; Elecraft at mailman.qth.net
Subject: Re: [Elecraft] Breakers for KPA1500?

Erik,

One of the benefits of using a new and direct line to the breaker box to power both 240 and 120 in the shack is that the 120 volt (and the 240
volt) green wire ground is a straight run to the breaker box instead of being run willy-nilly from receptacle to receptacle through the house.
The one dedicated run creates less noise on the power to the shack.

73,
Don W3FPR

On 7/10/2018 11:40 AM, Erik Basilier wrote:
> It is abundantly clear that 3 conductors plus protective ground are 
> needed if there will be any load, on the same circuit, that requires 
> 120V as opposed to 240V only. I certainly agree 100%. It is also clear 
> that the person who installs 240V for the PA only could get away with 
> one conductor less. In that case, his other ham equipment would 
> presumably run on older 120V wiring. So, the person contemplating the 
> installation of 240V for the PA has a choice: Should he add the extra 
> conductor to make possible operation of 120V equipment on the new 
> wiring? An argument against it would be that it puts more load on the 
> new wiring and it doesn't utilize the 120V capacity already installed. 
> However, as has been pointed out, ham equipment doesn't constitute 
> that much of a load, even for a station at full legal power. My 
> personal feeling is that it is a good idea to use the new wiring (with 
> all 4 conductors) for all the ham equipment, as mixing the old and new 
> power circuits provides more opportunity for disastrous transient damage with a nearby lightning strike. Just my 2c.