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I purchased a SB-220 at an estate sale that had a 120 volt plug but the jumpers in the amp were wired for 220. Hope the xyl did not plug the vacuum cleaner into that outlet :)

On Tuesday, October 29, 2024 at 03:29:29 PM EDT, Eric <vzwengr@...> wrote:

The 5-15P is wired so that the grounding "pin" is the neutral and the two blades are "hot".? My thought for the corresponding receptacle? is (considering it's Halloween) "spooky".? :-)

As near as I can tell, the 2K-4 does the now deprecated "neutral is also used as grounding" method.? I need/want to figure out how to isolate grounding and neutral inside the amp.

Eric

On Tue, Oct 29, 2024 at 11:51?AM Mahlon Haunschild via <k4oq.radio=[email protected]> wrote:

Quick note... the 2K-4 needs a neutral as well as ground

On Tue, Oct 29, 2024, 11:44?AM Eric via <vzwengr=[email protected]> wrote:

During my move from the city to an extreme rural area, I had a Henry 2K-4, along with a spare set of 3-500Zs, gifted to me.? I'm presuming the 2K-3 is a more modern looking 2K-3 and I have a '7300, so the thread combining the 2K-3 relay update and the 7300 "tail" is interesting.

?

I am the 3rd keeper of the 2K-4 and was told it was bought after demonstrating its functionality, but "something happened on the way home".? I've looked it over closely and the only things I've found were a wolf spider that jumped onto my hand (I said a couple of bad words), a NEMA 5-15P (regular 125VAC plug) on the end of the power cord, the amplifier internally strapped for 240VAC and what seems like a decade of dust covering everything.? The dust is now gone, as is the wolf spider.? So my hope is that someone had a Halloween special regular outlet hooked up for 240VAC, but everyone else has just been plugging it into a correctly wired 125VAC outlet..

?

I have not powered up the 2K-4 due to a lack of a 240VAC circuit in the shack.? I have the stuff to add a 60A/240VAC sub-panel in the shack, but...other projects are taking priority.

?

Eric

WB6TIX